FIRE OIL & GAS AUTOPRIME STANDARD PRODUCTS TRANSFORMER OIL PUMPS ENERGY SERVICE PARTS
D A TA F O R P U M P U S E R S
WATER
data for pump users
Contacts Sales and Administration 1420 Lakeview Arlington Business Park Theale Reading Berkshire RG7 4SA Email: solutions@spppumps.com Tel: +44(0)118 932 3123 Fax: +44(0)118 932 3302
Southern Service Centre Unit 1 Stanstead Road Boyatt Wood Industrial Estate Eastleigh, Hampshire England SO50 4RZ Tel: +44 (0) 2380 616004 Fax: +44 (0) 2380 614522 Northern Ireland Service Centre Unit 2 Oak Bank Channel Commercial Park Queens Road, Queens Island Belfast Northern Ireland BT3 9DT Tel: +44 (0) 2890 469802 Fax: +44 (0) 2890 466152
Manufacturing Centre Crucible Close Mushet Industrial Park Coleford Gloucestershire GL16 8PS Email: solutions@spppumps.com Tel: +44(0)1594 832701 Fax: +44(0)1594 836300
Scottish Service Centre 137 Deerdykes View Cumbernauld Scotland G68 9HN Tel: +44 (0) 1236 455035 Fax: +44 (0) 1236 455036
UK Service Centre Contact Directory Western Service Centre Tufthorn Avenue, Coleford Gloucestershire England GL16 8PJ Tel: +44 (0) 1594 832701 Fax: +44 (0) 1594 810043 North West Service Centre Greg Street, Reddish Stockport Cheshire England SK5 7BU Tel: +44 (0) 161 480 4955 Fax: +44 (0) 161 476 2193 Contents
2
France SPP Pumps 2 rue du Chateau d’eau 95450 US France Email: tima@spppumps.com Tel: +33 (0) 1 30 27 96 96 Fax: +33 (0) 1 34 66 07 33
South Africa SPP Pumps (South Africa) 6c Roller Street Spartan Ext 7 Kempton Park Gautent R.S.A 1619 Email: lvw@spppumps.co.za Tel: +27 (0) 860 777786 Fax: +27 11 970 2472
North and South America SPP Pumps, Inc. 6716 Best Friend Road Norcross GA 30071, U.S.A. Email: james_hunt@spppumps.com Tel: +1(770) 409-3280 Fax: +1(770) 409-3290 www.spppumpsusa.com
Italy SPP Italy Via Watt, 13/A 20143 Milano Email: solutions@spppumps.com Tel: +(0039) 02 58111782 Fax: +(0039) 02 58111782 Mobile: +(0039) 346 3204457
Middle East SPP Pumps Limited (Middle East) P O Box 61491, Jebel Ali Dubai United Arab Emirates Email: general@spppumps.com Tel: +971 (0) 4 8838 733 Fax: +971 (0) 4 8838 735
Poland Email: solutions@spppumps.com Parent Company Kirloskar Brothers Limited “YAMUNA” Plot No 98 (3-17), Baner 411045 Pune India Tel: +91 20 2721 4444 www.kbl.co.in
Asia SPP Pumps Limited (Asia) 152 Beach Road Gateway East #05 - 01 to 04 Singapore 189721 Email: solutions@spppumps.com Tel: +(65) 6576 5725 Fax: +(65) 6576 5701
Contents
3
USEFUL WEBSITES
Useful Websites
Trade Associations: British Pump Manufacturers Association (BPMA) www.bpma.org.uk Construction Equipment Association (CEA) www.coneq.org.uk Fire Protection Association (FPA) www.thefpa.co.uk British Automatic Sprinkler Association www.basa.org.uk European Fire Sprinkler Network www.eurosprinkler.org Energy Industries Council www.the-eic.com Pump Centre www.pumpcentre.com
Regulatory Authorities: Factory Mutual (FM) www.fmglobal.com Underwriters Laboratories www.ul.com Loss Prevention Certification Board www.brecertification.co.uk National Fire Protection Association www.nfpa.org Pump Distributors Association www.the-pda.com Pumps-Directory www.pumps-directory.com Contents
4
Contents
5
CONTENTS Introduction to SPP..................................8 -14
Manufacturing................................................... 8 Test Faciylity...................................................... 8 SPP Divisions..................................................... 9 SPP International............................................. 13 Fire Protection and Approval Standards............ 14
Pump Specification & Operation...... 16 – 36
Data Required When Buying Pumps................. 16 Dimensions of Cast Iron Flanges to BS EN 109221................................................. 18 Dimensions of Cast Iron Flanges to ASME/ANSI B16.1............................................ 21 Dimensions of Steel Flanges to ASME/ANSI B16.5............................................ 23 Pump Installation............................................. 25 Pump Operation............................................... 25 Faults and Remedial Action.............................. 26 Vibration Tolerance.......................................... 28 Condition Monitoring........................................ 30 Flow Estimation Methods................................. 31 Application Do’s and Don’ts............................. 36
Velocity Head Correction.................... 66 – 74 Electrical Design Data......................... 76 – 84
Average Efficiencies and Power Factors of Electric Motors............................................. 76 Approximate Full Load Speeds (RPM) of AC Motors.................................................... 78 Starting AC Motors........................................... 79
Whole Life Cost...................................... 82 – 84 Whole Life Cost Principles and Pump Design.... 82 Features of a Low Life-Cycle cost centrifugal pumps............................................ 84
Energy...................................................... 87 – 90 Conversion Factors............................... 92 – 97 Conversion Factor Tables................................. 92. Vacuum Technical Data.................................... 96. Product / Application Charts............................. 97
Hydraulic Design Data......................... 41 – 61
Pressure (bar) vs Head (m of Water)................. 41 Calculation of Head for Pump Selection............ 43 Autoprime Pumping Terms............................... 46 Friction Loss for Water Hazen-Williams Formula, C=140)..................... 48 Resistance in Fittings....................................... 51 Quantities Passed by Pipes at different Velocities........................................... 52 Recommended Maximum Flow through Valves (l/s).......................................... 52 Water Discharged by Round Spray Holes in thin walled Pipes Under Different Pressures............ 53 Net Positive Suction Head (NPSH)..................... 54 Maximum Suction Lift with Barometric Pressure at Different Altitudes........................................ 56 Liquid Viscosity and its Effect on Pump Performance.......................................... 57 Approximate Viscosity Conversion Schedule..... 59 Test Tolerances and Different Standards.......... 61 Contents
6
“Engineered Pumping Solutions Focused on Markets where Application Knowledge, Service and Expertise Add Value� For more than 130 years SPP Pumps has been a leading manufacturer of centrifugal pumps and associated systems. A global principal in design, supply and servicing of pumps, pump packages and equipment for a wide range of applications and industry sectors. SPP pumps and systems are installed on all continents providing valuable high integrity services for diverse industries, such as oil and gas production, water and waste water treatment, power generation, construction, mines and for large industrial plants. Major applications include water treatment & supply, sewage & waste water treatment, fire protection, and mobile pumps for rental sectors, for which our low life cost and environmental considerations are fundamental design priorities.
Certificate Number: EMS111 Issue 1
Contents
7
MANUFACTURING SPP requires the highest standards of manufacturing excellence from its facilities around the world. This is crucial to the on-going growth and development of the company. At the main manufacturing facility located in the UK, SPP set the highest standards attainable in the industry for quality and reliability. SPP distinguishes its product split between pre-engineered standard products and fully customised equipment engineered and packaged to order. The extensive manufacturing and testing capabilities reflect this wide and diverse product range. To ensure efficient use of production resources, an ERP manufacturing planning system is utilised. Assembly areas are segregated into the main product groups; standard pumps, industrial fire pumps, contractors pumps and engineered products. The machine shop is planned in cell layout with individual cells specialising in types, or ranges of components. CNC machines are linked by a DNC system allowing programming to be carried out on the machine or offline. Lean manufacturing principles ensure that SPP are always focused on continuous improvement to support their ‘Right First Time’ philosophy. Customers are always welcome to visit the facility, either during manufacturing or when equipment is on test.
TEST FACILITY Testing, including witness testing, of all SPP’s range of pumps is performed at SPP’s own extensive in-house test facility. The main test area has a 1.4 million litre test tank with a depth of 6 metres. It can test pressures up to 50 bar, flows up to 2000 l/s and powers up to 800kW at 6.6kV, 400kW at 415V and 400kW at 60Hz. Generators can be used for higher powers or voltages. Contents
8
DIVISIONS WITHIN SPP WATER
Pumps for water supply, water/waste water treatment, industrial processes and general pumping service. SPP has an extensive range of products suitable for a variety of applications. From end suction DIN24255 (EN 733:1995) through to vertical turbine, split case and sewage pumps, SPP has reliable and well proven products to offer. Lowest Life Cycle Cost Series
SPP’s recognises the increasing emphasis on whole life cost when evaluating pumping schemes, for the twenty-first century. This has lead to the development of their Lowest Life-Cycle Cost Series of split case, vertical turbine and dry well sewage pumps
FIRE SPP is the world’s leading specialist manufacturer of quality fire protection pump packages. Unrivalled experience in design and manufacture together with advanced testing and accreditation ensures the utmost in equipment reliability. SPP fire pumps comply with the demanding requirements of the LPCB, FM and UL approval standards and meet all the requirements of NFPA 20.
Contents
9
OIL & GAS SPP is a world leader in the design and manufacture of pumping equipment for both onshore and offshore applications. In-house expertise ensures compliance with all applicable specifications and regulations. SPP has also established quality assurance and document control business systems allied to the needs of the major oil and gas contractors and end users. SPP is the packager as well as the pump manufacturer and takes full unit responsibility for the complete scope of supply.
AUTOPRIME The SPP Autoprime range is a proven, versatile and comprehensive product range suitable for use in a variety of applications worldwide. The Autoprime is primarily sold to rental organisations, contractors, utility companies, open cast mining companies and municipalities providing a durable solution. Continual investment in market-led research and development ensure that the products are designed to meet market requirements and legislation, providing significant benefits and solutions to owners and users alike.
Contents
10
STANDARD PRODUCTS The SPP standard pump product range has been expertly designed to enable you to fit them to any of your existing DIN Standard Pump Applications. SPP’s excellent modular pump design allows interchangeability across the range and with the ability to use standard shaft motors, gives much more flexibility in terms of maintenance, stock holding and material options. SPP Standard pumps can also be used for a variety of new pump application needs.
TRANSFORMER OIL PUMPS SPP’s transformer oil pump range is designed and manufactured to the highest quality standards. SPP have been producing transformer oil pumps for more than sixty years. Life expectancy in many cases has exceeded forty years. Applications include oil circulation in the following: power transmission, distribution and electric traction locomotive transformers.
ENERGY Through the use of proven systems and techniques, the Energy Division offers a complete energy saving package that can be applied equally to new projects and existing installations. The new division offers the following services: Energy Audits, Customer Training, Energy Management, Surveys/reports/ analysis and recommendations. By monitoring and/or analysing the actual requirement of the installation and comparing this with the specifications of the equipment installed, SPP can make recommendations that can reduce running costs (eg: power requirements), minimise maintenance costs (eg: parts/servicing and downtime) and improve plant reliability (eg: upgraded material specifications).
Contents
11
Lor
SERVICE
At SPP we are committed to providing the very best in customer support. We have built our reputation by providing a fast, cost effective service whilst maintaining continually high standards of workmanship and quality. With strategically located service centres in the UK and around the world, help is never far away. Each service centre is fully equipped to offer a comprehensive range of equipment repair and refurbishment techniques. Our support is available 24 hours a day, and is only ever a phone call away. SPP supports our customers around the globe through our extensive network of field service engineers. SPP field service engineers have thousands of hours of experience, backed by intensive product and applications training. Whatever your technical support requirement, we can help you get the best performance from our equipment in your application Field service engineers can provide. • Equipment installation and commissioning • Preventative maintenance • Equipment repair and upgrades • Product training On SPP and other manufacturers’ pumps.
Contents
12
Contents
France
Poland
South Africa
Italy
Abu Dhabi Jebel Ali India Singapore
Eastliegh
Reading
Stockport
SPP is a truly global company with the main R&D, manufacturing and test facilities centrally located in the UK and local sites in the United States, India, France, South Africa, Singapore, Dubai, Italy and Poland.
USA
Coleford
Northern Ireland
SPP INTERNATIONAL
13
FIRE PROTECTION APPROVAL STANDARDS SPP has one of the widest ranges of approved and listed equipment in the world complying with the demanding requirements of the UL and FM approval standards and meeting all the requirements of NFPA 20. Along with these approvals, SPP’s fire products are also approved for use in many other markets such as Europe, The Far East, The Middle East and Africa. Although many pump companies can offer equipment ‘designed to’ the various locally applicable fire rules and regulations, only a very select few have had their pumps subjected to the stringent performance and reliability tests of specialist fire approval laboratories. Being the first to achieve fire pump approval and listing by the internationally recognised Loss Prevention Certification Board the company today has more pumps approved by the LPCB than any other manufacturer.
Contents
14
PUMP SPECIFICATION AND OPERATION
Contents
15
PUMP SPECIFICATION AND OPERATION
Section 1
DATA REQUIRED WHEN buying PUMPS Fundamentals Number required. Nature of service. Whether continuous or intermittent.
Performance Capacity (State whether total or per unit). Total head or pressure to be developed. Suction lift (including friction), inlet pressure or head, or NPSH available. (State range of any variation in above items. Otherwise, send sketch or give full details of lifts and pipe runs including lengths, bores, materials and class of pipes and number and nature of bends, valves etc.).
Pumped Medium Nature of liquid (if other than cold, clean water). Values or ranges of actual pumping temperature with corresponding specific gravities, viscosities (if greater than for water) and vapour pressures. Any corrosive and/or abrasive properties. Nature, proportion and maximum size of any solids content.
Driver Nature of driver. If driver to be supplied, give full specification. If electric motor, state electricity supply details, any speed restriction. Whether lining-up and connecting free issue driver required. Details of starting equipment and/or other accessories required system of control if automatic.
Contents
16
Other Data If required to run in parallel with other units. Is it to be self-priming with suction lift. Pump type and arrangement. Fixed or portable. Horizontal or vertical shaft. Whether close-coupled, dry well, wet well or borehole (if vertical). Borehole diameter or any other space restrictions. If baseplate and coupling required. Constructional / material specification required. Site conditions:
If altitude above 150m.
If ambient temperature above 30ยบ C.
If to work outdoors.
Type of drive:
Direct or indirect (i.e. coupling, gearbox or V belt).
Direction of rotation (if restricted).
Official tests/inspection, packing and shipping requirements. Tender receipt/material despatch date required. Any other significant information. Items printed in bold are minimum requirements for quotation of any standard horizontal pump. All other items, so far as they apply, are necessary for the correct execution of all orders and quotations other than standard horizontal pumps.
Contents
17
PUMP SPECIFICATION AND OPERATION
Section 2
DIMENSIONS OF CAST IRON FLANGES to BS en 1092 Pumps and Fittings
NOTE - All dimensions listed below are in millimetres
BS EN 1092 TABLE PN6 NOM. DIA. 10 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900 1000
FLANGE
RAISED FACE
BOLTS
DRILLING
NECK
D
b
d4
Fmax
DIA.
No
d2
k
d3
r
75 80 90 100 120 130 140 160 190 210 240 265 320 375 440 490 540 595 645 755 860 975 1075 1175
12 12 14 14 14 14 14 14 16 16 18 18 20 22 22 22 22 22 24 30 24 24 26 26
33 38 48 58 69 78 88 108 128 144 174 199 254 309 363 415 463 518 568 667 772 878 978 1078
2 2 2 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5
M10 M10 M10 M10 M12 M12 M12 M12 M16 M16 M16 M16 M16 M16 M20 M20 M20 M20 M20 M24 M24 M27 M27 M27
4 4 4 4 4 4 4 4 4 4 8 8 8 12 12 12 16 16 20 20 24 24 24 28
11 11 11 11 14 14 14 14 18 18 18 18 18 18 22 22 22 22 22 26 26 30 30 30
50 55 65 75 90 100 110 130 150 170 200 225 280 335 395 445 495 550 600 705 810 920 1020 1120
26 30 38 42 55 62 74 88 102 130 155 184 236 290 342 385 438 492 538 640 740 842 942 1045
4 4 4 4 6 6 6 6 8 8 8 10 10 12 12 12 12 12 12 12 12 12 12 16
Contents
18
BS EN 1092 TABLE PN10 NOM. DIA.
FLANGE D
RAISED FACE b
d4
Fmx
BOLTS DIA.
No
DRILLING d2
k
NECK d3
r
240 392 342 396 448 498 552 654 760 866 970 1076 1284 1494 1702 1906 2112 2320
8 8 8 8 10 10 10 10 10 12 12 12 12 12 12 15 15 20
NOTE: FOR NOMINAL SIZES 10 - 150 USE PN6 TABLE 200 250 300 350 400 450 500 600 700 800 900 1000 1200 1400 1600 1800 2000 2200
340 395 445 505 565 615 670 780 895 1015 1115 1230 1455 1675 1915 2115 2325 2550
24 26 26 26 26 28 28 28 30 32 34 34 38 42 46 50 54 58
266 319 370 429 480 530 582 682 794 901 1001 1112 1328 1530 1750 1950 2150 -
3 3 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 -
M20 M20 M20 M20 M24 M24 M24 M27 M27 M30 M30 M33 M36 M39 M45 M45 M45 M52
8 12 12 16 16 20 20 20 24 24 28 28 32 36 40 44 48 52
23 23 23 23 28 28 28 31 31 34 34 37 40 43 49 49 49 56
295 350 400 460 515 565 620 725 840 950 1050 1160 1380 1590 1820 2020 2230 2440
BS EN 1092 TABLE PN16 NOM. DIA. 10 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800
FLANGE
RAISED FACE
BOLTS
DRILLING
NECK
D
b
d4
Fmx
DIA.
No
d2
k
d3
r
90 95 105 115 140 150 165 185 200 220 250 285 340 405 460 520 580 640 715 840 910 1025
16 16 18 18 18 18 18 18 20 20 22 22 24 26 28 30 32 40 44 54 36 38
41 46 56 65 76 84 99 118 132 156 186 211 266 319 370 429 480 548 609 720 794 901
2 2 2 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 5 5 5
M12 M12 M12 M12 M16 M16 M16 M16 M16 M16 M16 M20 M20 M24 M24 M24 M27 M27 M30 M33 M33 M36
4 4 4 4 4 4 4 8 8 8 8 8 12 12 12 16 16 20 20 20 24 24
14 14 14 14 18 18 18 18 18 18 18 22 22 26 26 26 30 30 33 36 36 39
60 65 75 85 100 110 125 145 160 180 210 240 295 355 410 470 525 585 650 770 840 950
74 92 105 131 56 64 74 92 105 131 156 184 235 292 344 390 445 490 548 652 755 855
4 4 4 4 6 6 6 6 8 8 10 10 12 12 12 12 12 12 12 12 12 12
Contents
19
NOM. DIA. 10 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800
FLANGE
RAISED FACE
BOLTS
DRILLING
NECK
D
b
d4
Fmx
DIA.
No
d2
k
d3
r
90 95 105 115 140 150 165 185 200 235 270 300 360 425 485 555 620 670 730 845 960 1085
16 16 18 18 18 18 20 22 24 26 28 30 32 35 38 42 46 50 56 68 50 54
41 46 56 65 76 84 99 118 132 156 186 211 274 330 389 448 403 548 609 720 820 928
2 2 2 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 5 5 5
M12 M12 M12 M12 M16 M16 M16 M16 M16 M20 M24 M24 M24 M27 M27 M30 M33 M33 M33 M36 M39 M45
4 4 4 4 4 4 4 8 8 8 8 8 12 12 16 16 16 20 20 20 24 24
14 14 14 14 18 18 18 18 18 22 26 26 36 30 30 33 36 36 36 39 42 48
60 65 75 85 100 110 125 145 160 190 220 250 310 370 430 490 550 600 660 770 875 990
28 32 40 46 56 64 74 92 105 134 162 192 244 298 352 398 452 500 558 660 760 864
4 4 4 4 6 6 6 6 8 8 8 10 10 12 12 12 12 12 12 12 12 12
Contents
PUMP SPECIFICATION AND OPERATION
BS EN 1092 TABLE PN25
20
DIMENSIONS OF CAST IRON FLANGES to ASME/ANSI B16.1 ASME/ANSI B16.1 – 125lb – RATING – CAST IRON 250lb – RATING – CAST IRON
NOTE - All dimensions listed below are in inches
ASME/ANSI B16.1 – 125lb RATING – CAST IRON NOM. DIA. 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4 5 6 8 10 12 14 16 18 20 24 30
FLANGE
BOLTS
DRILLING
D
b
DIA.
No
d2
k
4.25 4.62 5.00 6.00 7.00 7.50 8.50 9.00 10.00 11.00 13.50 16.00 19.00 21.00 23.50 25.00 27.50 32.00 38.75
0.44 0.50 0.56 0.62 0.69 0.75 0.81 0.94 0.94 1.00 1.12 1.19 1.25 1.38 1.44 1.56 1.69 1.88 2.12
0.50 0.50 0.50 0.62 0.62 0.62 0.62 0.62 0.75 0.75 0.75 0.88 0.88 1.00 1.00 1.12 1.12 1.25 1.25
4 4 4 4 4 4 8 8 8 8 8 12 12 12 16 16 20 20 28
0.62 0.62 0.62 0.75 0.75 0.75 0.75 0.75 0.88 0.88 0.88 1.00 1.00 1.12 1.12 1.25 1.25 1.38 1.38
3.12 3.50 3.88 4.75 5.50 6.00 7.00 7.50 8.50 9.50 11.75 14.25 17.00 18.75 21.25 22.75 25.00 29.50 36.00
Contents
SPOTFACE DIAMETER 1.00 1.00 1.00 1.25 1.25 1.25 1.25 1.25 1.50 1.50 1.50 1.62 1.62 1.88 1.88 2.12 2.12 2.25 2.25
HUB d3
r
1.94 2.31 2.56 3.06 3.56 4.25 4.81 5.31 6.44 7.56 9.69 11.94 14.06 15.38 17.50 19.62 21.75 26.00 -
0.12 0.12 0.12 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.38 0.38 0.38
21
NOM. DIA. 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4 5 6 8 10 12 14 16 18 20 24 30
FLANGE
BOLTS
DRILLING
D
b
DIA.
No
d2
k
4.88 5.25 6.12 6.50 7.50 8.25 9.00 10.00 11.00 12.50 15.00 17.50 20.50 23.00 25.50 28.00 30.50 36.00 43.00
0.69 0.75 0.81 0.88 1.00 1.12 1.19 1.25 1.38 1.44 1.62 1.88 2.00 2.12 2.25 2.38 2.50 2.75 3.00
0.62 0.62 0.75 0.62 0.75 0.75 0.75 0.75 0.75 0.75 0.88 1.00 1.12 1.12 1.25 1.25 1.25 1.50 1.75
4 4 4 8 8 8 8 8 8 12 12 16 16 20 20 24 24 24 28
0.75 0.75 0.88 0.75 0.88 0.88 0.88 0.88 0.88 0.88 1.00 1.12 1.25 1.25 1.38 1.38 1.38 1.62 2.00
3.50 3.88 4.50 5.00 5.88 6.62 7.25 7.88 9.25 10.62 13.00 15.25 17.75 20.25 22.50 24.75 27.00 32.00 39.25
Contents
SPOTFACE DIAMETER 1.25 1.25 1.50 1.25 1.50 1.50 1.50 1.50 1.50 1.50 1.63 1.88 2.13 2.13 2.25 2.25 2.25 2.75 34.00
PUMP SPECIFICATION AND OPERATION
ASME/ANSI B16.1 – 250lb RATING – CAST IRON HUB d3
r
2.06 2.50 2.75 3.31 3.94 4.62 5.25 5.75 7.00 8.12 10.25 12.62 14.75 16.25 18.38 20.75 23.00 27.25 34.00
0.13 0.13 0.13 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.38 0.38 0.38
22
DIMENSIONS OF STEEL FLANGES TO ASME/ANSI B16.5 ASME/ANSI B16.5 – 150lb – RATING - STEEL – 300lb – RATING - STEEL
NOTE - All dimensions listed below are in inches
ASME/ANSI B16.5 – 150lb RATING - STEEL NOM. DIA. 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4 5 6 8 10 12 14 16 18 20 24
FLANGE
RAISED FACE
BOLTS
DRILLING
D
b
d4
Fmax
No
DIA.
d2
k
3.50 3.88 4.25 4.62 5.00 6.00 7.00 7.50 8.50 9.00 10.00 11.00 13.50 16.00 19.00 21.00 23.50 25.00 27.50 32.00
0.44 0.50 0.56 0.62 0.69 0.75 0.88 0.94 0.94 0.94 0.94 1.00 1.12 1.19 1.25 1.38 1.44 1.56 1.69 1.88
2.00 2.50 2.88 3.62 4.12 5.00 5.50 6.19 7.31 8.50 10.62 12.75 15.00 16.25 18.50 21.00 23.00 27.25
1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16
4 4 4 4 4 4 4 4 8 8 8 8 8 12 12 12 16 16 20 20
1/2 1/2 1/2 1/2 1/2 5/8 5/8 5/8 5/8 5/8 3/4 3/4 3/4 7/8 7/8 1 1 1 1/8 1 1/8 1 1/4
0.62 0.62 0.62 0.62 0.62 0.75 0.75 0.75 0.75 0.75 0.88 0.88 0.88 1.00 1.00 1.12 1.12 1.25 1.25 1.38
2.38 2.75 3.12 3.50 3.88 4.75 5.50 6.00 7.00 7.50 8.50 9.50 11.75 14.25 17.00 18.75 21.25 22.75 25.00 29.50
Contents
SPOTFACE DIAMETER 1.00 1.00 1.00 1.00 1.00 1.25 1.25 1.25 1.25 1.25 1.50 1.50 1.50 1.62 1.62 1.88 1.88 2.12 2.12 2.25
HUB d3
r
1.19 1.50 1.94 2.31 2.56 3.06 3.56 4.25 4.81 5.31 6.44 7.56 9.69 12.00 14.38 15.75 18.00 19.88 22.00 26.12
0.12 0.12 0.12 0.12 0.12 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.38 0.38
23
NOM. DIA. 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4 5 6 8 10 12 14 16 18 20 24
FLANGE D
b
RAISED FACE d4
Fmax
No
BOLTS DIA.
DRILLING d2
k
SPOTFACE DIAMETER
d3
HUB r
3.75 4.62 4.88 5.25 6.12 6.50 7.50 8.25 9.00 10.00 11.00 12.50 15.00 17.50 20.50 23.00 25.50 28.00 30.50 36.00
0.56 0.62 0.69 0.75 0.81 0.88 1.00 1.12 1.19 1.25 1.38 1.44 1.62 1.88 2.00 2.12 2.25 2.38 2.50 2.75
1.38 1.69 2.00 2.50 2.88 3.62 4.12 5.00 5.50 6.19 7.31 8.50 10.62 12.75 15.00 16.25 18.50 21.00 23.00 27.25
1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16 1/16
4 4 4 4 4 8 8 8 8 8 8 12 12 16 16 20 20 24 24 24
1/2 5/8 5/8 5/8 3/4 5/8 3/4 3/4 3/4 3/4 3/4 3/4 7/8 1 1 1/8 1 1/8 1 1/4 1 1/4 1 1/4 1 1/2
0.62 0.75 0.75 0.75 0.88 0.75 0.88 0.88 0.88 0.88 0.88 0.88 1.00 1.12 1.25 1.25 1.38 1.38 1.38 1.62
2.62 3.25 3.50 3.88 4.50 5.00 5.88 6.62 7.25 7.88 9.25 10.62 13.00 15.25 17.75 20.25 22.50 24.75 27.00 32.00
1.00 1.25 1.25 1.25 1.50 1.25 1.50 1.50 1.50 1.50 1.50 1.50 1.62 1.88 2.12 2.12 2.25 2.25 2.25 2.75
1.50 1.88 2.12 2.50 2.75 3.31 3.94 4.62 5.25 5.75 7.00 8.12 10.25 12.62 14.75 16.75 19.00 21.00 23.12 27.62
0.12 0.12 0.12 0.12 0.12 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.38 0.38
*NOTE: The standard for Ductile Iron flanges is ASME/ANSI B16.42 150lb and 300lb rating. They are dimensionally the same as ASME/ANSI B16.5 including the raised face. The standard for Copper Alloy flanges is ASME/ANSI B16.24 150lb and 300lb rating. They are dimensionally the same as ASME/ANSI B16.5 except they are FLAT FACE.
Contents
24
PUMP SPECIFICATION AND OPERATION
ASME/ANSI B16.5 – 300lb RATING - STEEL
Section 3
PUMP INSTALLATION Fixed pumps must be securely anchored to firm foundations. Pumps must be accurately levelled with shafts, coupling faces and flange faces truly horizontal or vertical (as appropriate). The pump and driver shafts should be truly in line in all senses and checks and requisite adjustments should be made by means of wedges and shims both in initial setting-up and after grouting in and tightening down. Foreign matter must be prevented from ingress to liquid openings, bearings, etc., and external pipe-bores ensured clean before connecting. Pipework must be brought up to pump orifices, and independently supported, so as not to impose any weight or strain on the pump when connected. Make sure at all stages that the pump will turn freely. For fuller particulars see specific instructions as supplied with pumps. Section 4
PUMP OPERATION SPP’s Field service engineers can provide a full commissioning service for a wide range of pumps. Contact your local SPP office for details • Check all guards are fitted correctly before starting the pump • Make sure pump will turn freely • Check driver and pump rotations agree, with driver uncoupled • Make sure bearings are adequately charged with clean lubricant • Check stuffing boxes are packed and correctly adjusted • Make sure any external lubricating, cooling, sealing, etc., services and connections are turned on and operative • Make sure pump is effectively primed before starting up • Check that pump runs without undue overheating, noise or vibration: otherwise refer to detailed operating instructions for possible defects and rectify accordingly • On no account must a pump be allowed to continue running unprimed, or with a closed discharge valve • On no account should a pump be regulated by closing a valve on the suction side Contents
25
PUMP SPECIFICATION AND OPERATION
section 5
Faults and remedial action Potential Fault or Defect: No liquid delivered. Insufficient liquid delivered. Liquid delivered at low pressure. Loss of liquid after starting. Excessive vibration. Motor runs hotter than normal. Excessive noise from pump cavitation. Pump bearings run hotter than normal. PROBABLE CAUSES • •
Pump not primed. Speed too low. • • Speed too high. • • • • • Air leak in suction pipework. • • Air leak in mechanical seal. • • • • Air or gas in liquid. • • • Discharge head too high (above rating). • Suction lift too high. • Not enough head for hot liquid. • • • • • Inlet pipe not submerged enough. • • • Viscosity of liquid greater than rating. • Liquid density higher than rating. • • • • • Insufficient nett inlet head. • • • Impeller blocked. • • • Wrong direction of rotation. • • Excessive impeller clearance. • • • Damaged impeller. • Rotor binding. • Defects in motor. • Voltage and/or frequency lower than rating. • Lubricating grease or dirty oil or contaminated. • Foundation not rigid. • • • Misalignment of pump and driver. • Bearing worn. • • Rotor out of balance. • • • Shaft bent. • Impeller too small. SPP’s service division can carry out fault identification and rectification on a wide range of pumps. Contact your local SPP office for details Contents •
•
26
CAUSE
REMEDIAL ACTION
Pump not primed.
Fill pump and suction pipe completely with fluid. Check that the motor is correctly connected and receiving the full supply Speed too low. voltage also confirm that the supply frequency is correct. Speed too high. Check the motor voltage. Air leak in suction pipework. Check each flange for suction draught, rectify as necessary. Check all joints, plugs and flushing lines, if fitted. Note that prolonged Air leak in mechanical seal. running with air in the mechanical seal will result in damage and failure of the seal. It may be possible to increase the pump performance to provide Air or gas in liquid. adequate pumping. Discharge head too high (above Check that valves are fully open and for pipe friction losses. An increase rating). in pipe diameter may reduce the discharge pressure. Check for obstruction of pump inlet and for inlet pipe friction losses. Suction lift too high. Measure the static lift, if above rating, raise the liquid level or lower the pump. Not enough head for hot liquid. Reduce the positive suction head by raising the liquid level. Inlet pipe not submerged If the pump inlet cannot be lowered, provide a baffle to smother the inlet enough. vortex and prevent air entering with the liquid. Viscosity of liquid greater than Refer to SPP Pumps Ltd for guidance to increase the size or power of rating. the motor or engine. Liquid density higher than Refer to SPP Pumps Ltd for guidance to increase the size or power of rating. the motor or engine. Increase the positive suction head by lowering the pump or raising the Insufficient nett inlet head. liquid level. Impeller blocked. Dismantle the pump and clean the impeller. Wrong direction of rotation. Check driver rotation with the direction arrow on the pump casing. Excessive impeller clearance. Replace the impeller when clearance exceeds the maximum adjustment. Rotor binding. Check for shaft deflection, check and replace bearings if necessary. Ensure that motor is adequately ventilated. Refer to manufacturers’ Defects in motor. instructions. Voltage and/or frequency lower If voltage and frequency are lower than the motor rating, arrange for than rating. provision of correct supply. Lubricating grease or oil dirty Dismantle the pump, clean the bearings, reassemble the pump and fill or contaminated. with new grease or oil. Ensure that the foundation bolts are tight, check that foundations match Foundation not rigid. SPP Pumps Ltd recommendations. Misalignment of pump and Realign the pump and driver as specified. driver. Remove the bearings, clean and inspect for damage and wear, replace Bearings worn. as necessary. Rotor out of balance. Check impeller for damage, replace as necessary. Shaft bent. Check shaft run-out and replace if necessary. Impeller too small. Refer to SPP Pumps Ltd for options to fit a larger impeller. SPP’s service division can carry out fault identification and rectification on a wide range of pumps. Contact your local SPP office for details Contents
27
VIBRATION TOLERANCE In every pump there are dynamic forces of hydraulic or mechanical origin that will inevitably lead to a certain level of vibration. To maintain the integrity of the pump unit and associated equipment the level of vibration must be kept within certain limits.
Acceptance Criteria The following table defines the maximum allowable level of vibration measured in mm/s RMS overall velocity during a factory acceptance test. It should be noted that the factory acceptance test is not necessarily an accurate representation of the vibration on site, when the unit is grouted in with permanent pipe supports etc. Application / Class
Class 1
Class 2
Class 3
3.0
4.7
7.1
3.9
5.6
9.0
Not applicable
9.0
13.0
Continuous operation over the preferred operating range Continuous operation over the allowable operating range Intermittent operation over the allowable operaing range
Pump Classes Class 1 pumps will only include those that have been designed in full accordance with A.P.I. 610, for use in critical applications. None of the standard ranges of SPP fall into this class and pumps that meet it are only available on an engineered to order basis. Class 2 pumps will include all SPP general purpose industrial designs apart from those specifically identified as class 3 below. Class 3 pumps shall include any pumps with less than three impeller vanes, split case pumps of the “through bore� type and any unit driven by a diesel engine of four or more cylinders. (Refer to SPP Engineering for units driven by engines of three or less cylinders). Contents
28
PUMP SPECIFICATION AND OPERATION
Section 6
Method Vibration measurements will be made on the pump bearing housings, as close as is practical to the bearing positions. For each bearing position two measurements will be taken perpendicular to the pump rotation axis. In addition an axial measurement will be taken at the thrust bearing position. The measurements will be of velocity, overall RMS values, in mm/s. In order to reliably achieve the stated acceptance limits the pump must be rigidly restrained, aligned to the driver within the coupling makers recommendations, operating without cavitation or air entrainment. Pipe work must be arranged to provide straight uniform flow into the pump and be connected and anchored so as avoid strains and resonance.
SPP’s field service engineers can undertake vibration analysis. Contact your local SPP office for details
Contents
29
CONDITION MONITORING In order to minimise the ownership costs of capital equipment, it is critical for the user to monitor and maintain the equipment once installed. Failure to do so will impact both on the mechanical integrity and economic performance of the installed equipment. Early diagnosis of potential equipment failure can result in considerable repair cost savings and crucially a reduction in unplanned downtime. Monitoring of pump energy consumption and system efficiency will bring visibility to pump wear, operating efficiency and highlight any system irregularities. All of these factors will help minimise energy consumption and reduce operating costs. The SPP condition monitoring systems can provide this level of security by detecting, analysing and evaluating key equipment performance. These include the following: • Performance/Efficiency degradation • Bearing vibration levels • Bearing element damage • Bearing operating temperatures • Driver alignment condition • Residual unbalance • Cavitation The system provides considerable flexibility in the display and use of the diagnostic output. The options include web based user configurable dashboard for live and trend data, automatic notification of alerts by text or email and local download of data to PC for detailed evaluation. Contents
30
PUMP SPECIFICATION AND OPERATION
Section 7
Section 8
Flow Estimation Methods Many pumping systems are fitted with permanently installed flowmeters which enable a reasonably accurate measurement of system flow to be obtained. Where permanent flowmeters are not installed, it is often possible to use external clamp-on meters, insertion meters or thermodynamic testing equipment to determine system flow. However, it is not always practical to use these devices – either for financial reasons or system layout constraints – and where this is the case, alternative indirect methods need to be used for estimating system flow. There are a number of methods available to enable an estimation of flow to be made in the field. Each of these methods requires some form of knowledge of the system or the pump, and all have inherent inaccuracies of varying degrees. However, in the absence of any more accurate flow measuring apparatus, these can be the only alternatives available. There are four main indirect methods of determining pump flow in the field: • Pressure method • Power method • Drop test • Suction pressure measurement The Pressure and Power methods require the use of the pump curve, whilst the drop test requires sump geometry and level details.
Pressure MEASUREMENT This is the more accurate and simplest of the four methods, requiring suction and delivery pressure gauge readings, a copy of the pump performance curve at the correct operational speed and knowledge of the impeller diameter. Determine the differential head across the pump by subtracting the suction head from the discharge head. Then use the pump performance curve to obtain the pump flow at the measured head and impeller diameter. For example, if the suction head is measured as 3m and the discharge head as 63m, the pump differential head is 60m. Using the pump manufacturers original test curve for the pump, the flow can be estimated as 150 l/s. Contents
31
PUMP SPECIFICATION AND OPERATION
Over time, a pump’s Flow/Head curve will change as wear occurs within the pump. Therefore, the accuracy of this method will tend to reduce as the pump gets older. However, this will remain a more accurate method than the others detailed below. Where existing installed site gauges are used, it should be remembered that their accuracy may be far from ideal. Remember that the pump Q/H curve is based on differential head, normally pumping water with an SG of 1. If the site liquid being pumped has an SG other than 1, SG correction should be applied to the site pressure readings to match the performance curve being used.
Power Measurement Power meters are rarely available on site, but amps (I) and volts (V) are commonly displayed at the control panel. These readings can be used to calculate power, although this also requires motor efficiency and power factor data - which will need to be estimated if motor manufacturers information is not available. Power (kW) = (1.732 x I x V x eff x pf)/1000 Using this equation, the pump power can be calculated and from this, the flow can be read off the pump curve. Contents
32
For example, if the current is read as 165A, the voltage as 400V and motor efficiency and pf from manufacturers’ data are 95% and 0.92 respectively, the calculated power becomes: Power = (1.732 x 400 x 165 x 0.95 x 0.92)/1000 = 100kW
Reading across the power scale on the pump manufacturers curve, the flow at this absorbed power can be obtained – 150 l/s in this example. As mentioned above, a pump’s Flow/Head curve and efficiency curve will change as wear occurs within the pump. This will affect the pump’s power curve and therefore, as with the pressure measurement method, accuracy will tend to reduce as the pump gets older. It should also be remembered that the installed instruments from which readings are taken may themselves be inaccurate, as it is unlikely that they will not have been calibrated to any significant accuracy since their original installation. As an alternative to the above calculation, taking a simple current ratio (actual current/full load current) and applying it to the motor rated power can give a reasonable estimation of the motor output power. In the above example, assuming a 132kW motor with a full load current of 230A, this method would result in a duty power of (165/230)*132 = 95kW, and a resultant flow of around 135 l/s.
Contents
33
PUMP SPECIFICATION AND OPERATION
Although the power method can be used very effectively in situations where a quick approximate on site estimate is required, it should not be applied to high specific speed pumps such as vertical turbine or mixed flow pumps, whose power curves can follow significantly different rules.
Drop Test This is the least accurate method, and requires knowledge of sump dimensions and levels. It is often used on sewage pump installations, where sump emptying occurs over a relatively short period of time. In this method, the time taken for a pump to lower the sump level over a known depth is recorded. The volume of liquid pumped is then calculated based on the sump level change and the sump area, and is divided by the time taken to arrive at a volume flow rate. For example, if a sump has dimensions of 4m x 3m, and the level is reduced by 1m over a time period of 10 minutes, the average pump flow is (4 x 3 x 1)/10 = 1.2 m3/min, or 72 m3/h This method has a number of inherent inaccuracies: • During the drop test, it is likely that flow will continue to enter the sump. This will affect the result – the extent of the effect will depend upon the rate of inflow in proportion to the outflow. • The sump may not have a uniform section, making volume calculation less accurate. • As the level is lowered, the total head on the pump changes which will affect the pump output. Any resultant calculation will only give an average flow over the range of heads. • Measurement of pumped depth may be difficult if there is no installed measuring equipment.
SUCTION PRESSURE MEASUREMENT In most pumping stations, it is possible to obtain a pressure reading on the suction side of the pumps. The velocity and friction head components of this reading can be used to estimate the flow. To use this method, it is necessary to know the pressure drop on the pump suction (static suction pressure operational suction pressure), the type and number of pipe fittings up to the pressure measurement point and fittings diameter. An estimation of the Contents
34
fittings friction (K) factor is also required. Convert the suction pressure drop (P in kPA) into a head drop (Zd in meters) using the equation: Zd = P x 0.102 sg (note that this Zd calculation will change depending on your site measured units) Obtain a total K factor for the suction fittings up to the measurement point. Assuming there are no significant straight pipe losses in the suction, the following equation can then be used to determine the flow velocity: Zd = V2 x (1+K) 2g Once the velocity is known, the flow rate can be calculated using the suction diameter. This method can be adapted to suit a wide variety of suction and pump configuration and the available locations for pressure measurement. Although there are potential inaccuracies in determining K factors and internal diameters, careful use of this method can allow the velocity to be estimated to within a few percent.
Conclusion There is no single simple and accurate method of determining flow in systems where installed meters are not present, or where the use of alternative temporary flow metering equipment cannot be fitted. Instead there are a number of methods that can be utilised to obtain an approximate pumping rate, which in many cases may be sufficient for the purposes required. All these methods have limitations and inherent inaccuracies. Where these methods need to be employed, it is worthwhile applying at least two methods to get comparative results.
35
Contents
PUMP SPECIFICATION AND OPERATION
Section 9
Application Do’s and Don’ts Suction & Delivery Piping Ensure that bolt grouting or chemical anchors are allowed to dry thoroughly before connecting any pipework. Note that fire pumpsets have regulatory requirements for piping and these must be strictly observed. Refer to the appropriate standard for details. Both suction and discharge piping should be supported independently and close to the pump so that no strain is transmitted to the pump when the flange bolts are tightened. Use pipe hangers or other supports at intervals necessary to provide support. When expansion joints are used in the piping system, they must be installed beyond the piping supports closest to the pump. Install piping as straight as possible, avoiding unnecessary bends. Where necessary, use 45º or long sweep 90º bends to decrease friction losses.
Eccentric Reducer on a Split Case Pump
Typical End Suction Pump Piping Installation Contents
36
Make sure that all piping joints are airtight. Where reducers are used, eccentric or ‘flat top’ reducers are to be fitted in suction lines and concentric or straight taper reducers in discharge lines. The length of eccentric reducers should be about four times the pump suction diameter. Undulations in the pipe runs are also to be avoided. Failure to comply with this may cause the formation of air pockets in the pipework and thus prevent the correct operation of the pump and measuring equipment. The suction pipe should be as short and direct as possible, and should be flushed clean before connecting to the pump. For suction lift applications, it is advisable to use a foot valve. Horizontal suction lines must have a gradual rise to the pump. If the pumped fluid is likely to contain foreign matter then a filter or coarse strainer should be fitted to prevent ingress to the pump. The discharge pipe is usually preceded by a non-return valve or check valve and a discharge gate valve. The check valve is to maintain system pressure in case of stoppage or failure of the driver. The discharge valve is used to prevent back flow when shutting down the pump for maintenance.
Coupling alignment Periodical checks of shaft alignments should be undertaken and if necessary adjusted accordingly. In order to maintain the warranty status of your SPP pump it is recommended to take out an SPP preventative maintenance contract. SPP’s field service engineers have extensive experience in pump and coupling alignment. Refer to the pump and coupling instruction manuals for details of shaft alignment procedures and tolerances or proceed generally thus: a) Lateral Alignment Mount a dial gauge on the motor shaft or coupling with the gauge running on the outer-machined diameter of the pump coupling. Turn the motor shaft and note the total indicator reading. b) Angular Alignment Mount a dial gauge on the motor shaft or coupling to run on a face of the pump coupling as near to the outside diameter as possible. Turn the motor shaft and note the total indicator reading at top & bottom and each side. Contents
37
Mount the dial gauge on the pump shaft or coupling with the gauge running on the machined outer diameter of the motor coupling. Turn the pump shaft and note the total indicator reading. d) Adjustment The motor must be shimmed and re-positioned to align the shafts to the coupling manufacturer’s specifications. Note: Shaft alignment must be checked again after the final positioning of the pump unit and connection to pipework as this may have disturbed the pump or driver mounting positions.
Engine Driven Pumps Air is required for combustion and cooling purposes, with air and radiator cooled engines in particular needing large volumes of air for cooling. Inlet and outlet apertures, suitably sized and positioned to prevent air recirculation, must be provided in the pump house structure. It is recommended that a low level vent be matched by a high level vent in the opposite wall. Exhaust runs should be as short as possible. Small bore pipe and/or excessive length will cause backpressure on the engine, reducing engine performance and therefore pump output. Engine driven fire pumps should not be left unattended whilst undertaking weekly test runs. The run-to-crash design of fire pump engines makes it essential to that they are commissioned by experienced personnel to avoid permanent damage. SPP offers fixed price fire pump commissioning services
Pre-commissioning Check If SPP Pumps Ltd is contracted to carry out the commissioning, the following check list shows items to be completed before the commissioning engineer arrives.
SPP commissioning SERVICES SPP use qualified engineers to maintain approved systems, warranty and approved parts. Contents
38
PUMP SPECIFICATION AND OPERATION
c) Confirm Lateral Alignment
Check List 1
Installation: • Mounting plinths comply with instructions for size, construction and location • The baseplate has been accurately levelled and adequately supported. This prevents distortion and makes achievable the final shaft alignment to within manufacturers specification • The fixing bolts are grouted as instructed and tightened to the required torque • The shaft alignment has been checked and set to within the stated tolerances.
39
2
Suction and delivery pipework is adequately supported and NEGLIGIBLE forces are transmitted to the pump casing.
3
Where applicable, all drain, minimum flow, and test pipelines are fitted, together with valves gauges and flow meters.
4
The diesel engine exhaust has been fitted in line with recommendations.
5
The engine fuel tank is filled with sufficient fuel.
6
Batteries are filled and charged in accordance with the manufacturer’s instructions.
7
All wiring to controls and to remote alarm panels is completed in line with appropriate regulations & power supplies are connected.
8
The area is clear of all builders’ material and rubbish to allow access to the pumps.
Contents
HYDRAULIC DESIGN DATA
Contents
40 40
0
0.00
10.19
20.39
30.59
40.79
50.99
61.18
71.38
81.58
91.77
20
203.94
bar
0.00
1.00
2.00
3.00
4.00
5.00
6.00
7.00
Contents
8.00
9.00
10
101.97
305.91
30
92.97
82.60
72.40
62.20
52.00
41.81
31.61
21.41
11.22
1.02
0.1
407.88
40
93.81
83.62
73.42
63.22
53.02
42.83
32.63
22.43
12.24
2.04
0.2
509.85
50
94.83
84.64
74.44
64.24
54.04
43.85
33.65
23.45
13.26
3.06
0.3
611.82
60
95.85
85.65
75.46
65.26
55.06
44.87
34.67
24.47
14.28
4.08
0.4
713.79
70
96.87
86.67
76.48
66.28
56.08
45.89
35.69
25.49
15.30
5.10
0.5
815.76
80
97.89
87.69
77.50
67.30
57.10
46.91
36.71
26.51
16.32
6.12
0.6
917.73
90
98.91
88.71
78.52
68.32
58.12
47.93
37.73
27.53
17.33
7.14
0.7
1019.70
100
99.93
89.73
79.54
69.34
59.14
48.95
38.75
28.55
18.35
8.16
0.8
metres
bar
100.95
90.75
80.56
70.36
60.16
49.97
39.77
29.57
19.37
9.18
0.9
Section 10
PRESSURE (bar) vs HEAD (m of water)
41
HYDRAULIC DESIGN DATA
Example Find the metres head of water (1.0 s.g.) equivalent of 54.76 bar From bottom two lines:
50.00
bar
= 509.85m
Select ‘4 bar’ line in first column and read along to figure under 0.7 in top line, hence:
4.70
bar
= 47.93m
For 0.06 bar, read under 0.6 top line: hence 6.12m dividing both figures by 10:
0.06
bar
= 0.612m
54.76
bar
= 558.392m
Thus by addition
Note: For liquids with specific gravities differing from 1.0, answer must be divided by actual specific gravity to obtain head in metres of liquid.
Contents
42
Section 11
CALCULATION OF HEAD FOR PUMP SELECTION To fulfill a pumping duty a pump must develop sufficient head and meet the suction conditions. The total head of a system must take into account the difference in liquid levels at inlet and outlet, friction in the pipes, surface pressure (or in some cases vacuum) on inlet and outlet and the velocity of the fluid at discharge. The following diagram and example explains how to calculate the system head taking all these factors into account.
System head = total discharge head total suction head H = hd – hs The total discharge head is made from four separate heads: hd = hsd + hpd + hfd + hvd
• hd = total discharge head • hsd = discharge static head • hpd = discharge surface pressure head • hfd = discharge friction head • hvd = discharge velocity head
Contents
43
HYDRAULIC DESIGN DATA
The total suction head consists of four separate heads hs = hss + hps - hfs - hvs • hs = total suction head • hss = suction static head • hps = suction surface pressure head • hfs = suction friction head • hvs = suction velocity head Example Calculate the total head of the following pump system. The total friction through suction pipes and fittings is equivalent to 1m head and through delivery pipes and fittings is equivalent to 10m head. The header tank and discharge pipe is open to atmosphere at sea level. The suction velocity head is 0.1m and the discharge velocity head is 0.5m Pumped fluid is cold clean water.
Contents
44
First we calculate the total delivery head, hsd and hss – from the diagram we can see that the discharge static head is 40m and the suction static head is 5m hpd – 0.014 = meters of liquid specific gravity pressure at sea level is approx. 760mm Hg, specific gravity of cold clean water is 1, so 760 x 0.014/1 = 10.6m millimeters of mercury x
so hpd is 10.6m, the header tank is also open to atmosphere so hps is also 10.6m
hd = hsd + hpd + hfd + hvd
= 40 + 10.6 + 10 + 0.5
= 61.1 m
hs = hss + hps - hfs - hvs
= 5 + 10.6 - 1 - 0.1
= 14.5 m
Total system head H = hd – hs
= 61.1 – 14.5
= 46.6 m Note: Gauge readings need correcting for height of gauge mounting. For this purpose it is important that pressure gauges should be full of liquid. Where a vacuum gauge is used for a suction lift, the gauge pipe should be left empty and correction made from the point of connection, not from the gauge itself.
Contents
45
HYDRAULIC DESIGN DATA
Autoprime Pumping Terms Head “Total Head from all Causes” is the combination of both “Total Suction Head and “Total Discharge Head”. When static heights are kept to a minimum and pipework of the correct size for the pump is used, performance will be maintained and running costs minimised. Suction head will be affected by changes in liquid viscosity and specific gravity and in the vapour pressure resulting from increased liquid temperature.
Net Positive Suction Head (NPSH) NPSHr: minimum liquid head (pressure) required by the pump at the impeller to pump the liquid, this is determined by the pump design. NPSHa: minimum liquid head (pressure) available from the atmosphere to deliver the liquid to the impeller for pumping.
Example: NPSHa (Available)
10.5 m
less Static Lift
3.0 m
Friction & Vapour Loss
1.5 m
NPSHr (Required)
2.0 m
Therefore leaving for Suction Lift
4.0 m
Contents
46
Typical Suction Lift Configuration Discharge Hose Friction
AUTOPRIME
Static Delivery Head
Static Suction Lift
Total Discharge Head
TOTAL HEAD FROM ALL CAUSES
Suction Hose Friction
Contents
47
HYDRAULIC DESIGN DATA
Section 12
FRICTION LOSS FOR WATER (m/100m) IN SMOOTH AND NEW UNCOATED STEEL PIPES (HAZEN-WILLIAMS FORMULA, C=140) NB Figures assume actual bores exactly equal to nominal bores. See following notes regarding corrections for actual bores of commercial pipes differing from nominal bores. l/s 0.1 0.2 0.5 1 1.5 2 3 4 5 6 7 8 9 10 12 14 16 18 20 25 30 35 40 45 50 60 70 80 90 100 120 140 160 180
Bore 20(3/4) 0.83 3.0 16.4 65(2½) 0.4 0.68 1.45 2.5 3.8 5.2 6.9 8.9 11.1 13.4 175(7) 0.20 0.26 0.32 0.39 0.59 0.83 1.10 1.41 1.76 2.1 3.0 4.0 5.1 6.3
25(1) 0.28 1.0 5.5 20.0 80(3) 0.25 0.53 0.90 1.36 1.9 2.5 3.2 4.0 4.9 6.9 9.1 11.7 200(8) 0.20 0.31 0.43 0.58 0.74 0.92 1.11 1.56 2.1 2.7 3.3 4.0 5.6 7.5
200
32(1 3/4) 0.30 1.66 6.0 12.7 21.6 100(4) 0.30 0.46 0.64 0.84 1.10 1.36 1.66 2.3 3.1 4.0 4.9 6.0 9.0 225(9) 0.32 0.42 0.52 0.63 0.88 1.17 1.50 1.87 2.3 3.2 4.2 5.4 6.7
40(1 1/2) 0.56 2.0 4.3 7.3 15.5 26.4 125(5) 0.22 0.29 0.37 0.46 0.55 0.78 1.04 1.33 1.65 2.0 3.0 4.3 5.7 7.3 250(10) 0.38 0.53 0.70 0.90 1.12 1.36 1.90 2.5 3.2 4.0
50(2) 0.68 1.45 2.5 5.2 8.9 13.4 18.8 150(6) 0.15 0.19 0.23 0.32 0.43 0.55 0.68 0.83 1.25 1.76 2.3 3.0 3.7 4.5 6.3 300(12) 0.37 0.46 0.56 0.78 1.04 1.33 1.65
8.2
4.9
2.0
Nominal and actual bores of pipes in mm width with nominal inch equivalents.
Contents
48
For other types of pipe, multiply foregoing figures as below, for pipes in smooth and new condition. Galvanised iron
1.33
Uncoated cast iron
1.23
Coated cast iron, wrought iron, coated steel
1.07
Coated spun iron
1.04
Smooth pipe (lead, brass, copper, stainless steel, glass, plastic)
0.88
Friction losses are affected to an even greater degree by deviations of actual bore from the standard dimensions represented in the foregoing table. To correct for actual bore, multiply also by (D/d)4.87 Where
D = Standard (nominal) bore.
d = Actual internal diameter.
Multiplying factors for grey iron pipes to BS 4622 (both sand mould cast and spun): ductile iron pipes to BS 4772: and uPVC pipes to BS 3505 taking into account the corrections both for type of pipe and for actual bore, are as follows on the next page.
Contents
49
32
40
-
Class 4 (spun)
0.75
0.64
-
Class K9
Class K12
Class D
Class E
for galvanised
medium; also X 1.24 0.90
0.66 0.75
Class C
Steel Tubes, BS 1387
-
Class B
uPVC, BS 3505:
50
-
-
-
-
(2)
65
-
-
-
-
(2½)
80
1.18
0.99
0.91
0.84
(3)
1.21
1.04
0.97
0.90
(4)
100
-
-
-
-
(5)
125
1.16
1.04
0.99
0.93
(6)
150
-
-
-
-
(7)
175
0.84
0.75
0.64
0.57
-
-
-
0.85
0.91
0.78
0.68
-
-
-
1.06
1.12
0.96
0.83
0.78
0.82
0.73
0.87
0.97
0.84
0.72
0.65
0.88
0.97
0.92
1.06
0.92
0.79
0.68
-
-
0.93
1.07
0.92
0.79
0.68
0.85
0.77
-
1.13
0.98
0.84
0.73
-
-
For sand mould cast pipes multiply by 1.03: also for uncoated bore pipes by 1.15
-
Class 3 (spun)
Ductile Iron, BS 4722:
-
(1½)
Class 1 (spun)
(1¼)
Class 2 (spun)
0.79
(in)
Grey Iron, BS 4622:
25
(1)
20
(¾)
Nominal bore mm
-
1.10
0.97
0.85
0.74
0.86
0.78
1.14
1.04
1.00
0.95
(8)
200
-
1.16
1.03
0.88
0.77
-
-
-
-
-
-
(9)
225
250
-
1.12
0.98
0.86
0.75
0.87
0.80
1.13
1.04
1.00
0.96
(10)
300
-
1.19
1.04
0.90
0.80
0.84
0.78
1.12
1.04
1.00
0.97
(12)
HYDRAULIC DESIGN DATA
Contents
50
Section 13
RESISTANCE IN FITTINGS As in straight pipe, having length of following multiples of pipe diameter: Flush sharp-edged entry
22
Slightly rounded entry
11
Flush bellmouth entry
4
Sharp entry projecting into liquid
36
Bellmouth entry projecting into liquid
9
Footvalve with strainer
113
Round elbow
45
Short radius bend
34
Medium radius bend
18
Close return bend
100
Tee:
11
straight through
side outlet, sharp angled
54
side outlet, radiused (swept tee)
22
Branch piece, straight through
7
Branch piece, flow to branch
45
Branch piece, flow from branch
22
Sluice (gate) valve
7
Reflux (back pressure, non-return) valve
45
Angle valve
225
Globe valve
450
Bellmouth outlet
9
Sudden enlargement
45
Taper, divergence angle above 60ยบ
45
Taper, divergence angle 15ยบ - 60ยบ
22
Taper increaser or reduced with less than 15ยบ divergence angle: Equivalent to pipe of mean diameter. Flap
0.06m Head
Note: Multiplying factor for type and class of pipe to be applied to above equivalent lengths for pipe fittings (elbows, bends, tees etc) but not to those for valves.
Contents
51
HYDRAULIC DESIGN DATA
Section 14
QUANTITIES PASSED BY PIPES AT DIFFERENT VELOCITIES Actual bore of pipe, mm Velocity of flow, m/s
50
80
100
125
150
1
1.96
5.03
7.85
12.27
1.5
2.95
7.54
11.78
2
3.93
10.05
15.71
2.5
4.91
12.57
175
200
225
250
300
17.67
24.1
31.4
39.7
49.1
70.7
18.41
26.51
36.1
47.1
59.6
73.6
106.1
24.54
35.34
48.1
62.8
79.5
98.2
141.4
19.64
30.68
44.18
60.1
78.5
99.4
122.7
176.7
l/s
3
5.89
15.08
23.56
36.82
53.02
72.2
94.3
119.3
147.3
212.1
3.5
6.87
17.59
27.49
42.95
61.85
84.2
110
139.2
171.8
247.4
4
7.85
20.11
31.42
49.09
70.69
96.2
125.7
159.0
196.4
282.8
5
9.82
25.13
39.27
61.36
88.36
120.3
157.1
198.8
245.4
353.4
Section 15
RECOMMENDED MAXIMUM FLOW THROUGH VALVES (l/s) Size of Valve, mm
50
65
80
100
125
150
175
200
250
300
2.2
4.0
6.0
12.0
20.0
30.0
40.0
55.0
90.0
130.0
110.0 160.0
Foot valve with strainer Back pressure valve
3.0
5.0
8.0
15.0
25.0
37.5
50.0
70.0
Sluice valve
5.5
10.0
15.0
25.0
40.0
60.0
80.0
100.0 160.0 220.0
Contents
52
Contents
61.2
6.0
30.6
3.0
51.0
25.5
2.5
5.0
20.4
2.0
35.7
15.3
1.5
40.8
10.2
1.0
3.5
5.1
0.5
4.0
Head (m water)
Pressure (bar)
0.150
0.136
0.122
0.114
0.106
0.096
0.086
0.075
0.061
0.043
3
0.266
0.243
0.218
0.204
0.188
0.172
0.154
0.133
0.109
0.077
4
0.416
0.380
0.340
0.318
0.294
0.269
0.240
0.208
0.170
0.120
5
0.600
0.546
0.489
0.458
0.424
0.387
0.346
0.300
0.245
0.173
l/s per hole
6
Size of hole (mm)
1.065
0.972
0.870
0.814
0.754
0.688
0.615
0.532
0.435
0.307
8
1.67
1.52
1.36
1.27
1.18
1.07
0.96
0.83
0.68
0.48
10
2.40
2.19
1.96
1.83
1.70
1.55
1.38
1.20
0.98
0.69
12
Section 16
QUANTITIES OF WATER DISCHARGED BY ROUND SPRAY HOLES IN THIN WALLED PIPES UNDER DIFFERENT PRESSURES
53
HYDRAULIC DESIGN DATA
Section 17
NET POSITIVE SUCTION HEAD (NPSH) For a pump to fulfil a particular duty it must first be able to get the required quantity in. For example, a pump may work satisfactorily when installed at a given height above the liquid level on the suction side, but no longer do so if it is placed higher, even though the total head remains unaltered in view of a corresponding reduction in the height of lift on the delivery side. The criteria for this is termed NPSH, which has two aspects, the NPSH the installation and operating conditions provide (NPSH available) and the NPSH needed to get stable flow into the pump impeller (NPSH required). The installation conditions and pump selection must be reconciled so that the NPSH required does not exceed the NPSH available. Fluid not being sensibly cohesive, it cannot be towed. To be made to flow, it must be pressed from behind. There must, therefore, be either an extraneous pressure on the liquid and/or a head of the liquid itself, which is sufficient to cover losses as far as the pump inlet and then overcome pump inlet losses and create the requisite velocity into the impeller vanes. The pressure available behind a liquid for creating movement is the absolute pressure on the liquid free surface, less the liquid’s own pressure to move in the opposite direction, i.e. to evaporate into the spaces above the free surface – this is called vapour pressure. The head available at the pump inlet for getting the flow into the pump impeller is therefore:• Absolute pressure on liquid free surface
Ha
• Plus height of liquid free surface above pump impeller
+ hs
• Less liquid vapour pressure
- hv
• Less losses between liquid free surface and pump inlet
- hl
(All expressed in metres head of the liquid).
Contents
54
Note: +hs becomes negative if the liquid free surface is below the pump impeller. Care must be taken to state NPSH available taking all these factors into account, even though in particular cases the two may equalise each other, e.g. with a liquid at boiling point hv equals Ha and they thus cancel each other out. Otherwise confusion may arise through statement of NPSH, which is plainly inconsistent with the circumstances, e.g. a figure being quoted as NPSH when head over suction hs is meant. The velocity required at inlet to the impeller vanes is a function of flow quantity, area at vane inlets and velocity induced by impeller rotation. Consequently the NPSH required varies with pump type and size, and increases with both capacity and speed. To maintain NPSH required within given limits, the permissible speed reduces approximately as the square root of capacity increases. The increased vapour pressure of warm water often affects suction as indicated by the following table. Negative figures represent minimum requirement of head of liquid above impeller eye. Temp of water oC
40
50
60
70
75
80
85
90
95
100
Suction limit (m)
6.25
5.75
4.75
3.25
2.5
1.5
0.25
-1
-2
-3
Note: The above figures are intentionally conservative in order to cover varying suction capabilities of different pumps. Better values may be obtainable especially when the normal capacity of the pump is above the output required, but to allow investigation, full details should be submitted, and the possibility of the temperature being underestimated should not be overlooked.
Contents
55
HYDRAULIC DESIGN DATA
Section 18
MAXIMUM SUCTION LIFT WITH BAROMETRIC PRESSURE AT DIFFERENT ALTITUDES Barometric pressure bar
mm Hg
Equivalent head of water (m)
Sea level
1.013
760
10,33
500
0.954
716
9.73
6
1000
0.899
674
9.16
5.5
1500
0.846
634
8.62
5
2000
0.796
597
8.12
4.5
Altitude (m)
Practical maximum suction lift of pumps (m) 6.5
Section 19
THERMOMETER SCALES Temperature Conversion Formulae:o F = (oC x 9/5) + 32 oC = (oF – 32) x 5/9
Comparison values in oF and oC Scales of temperature o
F
o
-40 -31 -22 -4 5 14 23 32 41 50 59 68 77 86 95 104
-40 -35 -30 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40
C
o
F
113 122 131 140 149 158 167 176 185 194 203 212 230 248 266 284
o
C
45 50 55 60 65 70 75 80 85 90 95 100 110 120 130 140
o
F
302 320 338 356 374 392 410 428 446 464 482 500 518 536 554 572
Contents
o
C
150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300
56
Section 20
LIQUID VISCOSITY AND ITS EFFECTS ON PUMP PERFORMANCE Viscosity is the property of reluctance of a liquid to flow, i.e. the opposite of fluidity. It involves units of force, length and time and can be expressed as ‘absolute’ in regard to the internal forces in the liquid, or as ‘kinematic’ relating these forces to the liquid specific gravity. The most widely used unit of absolute viscosity is the poise (100 centipoises). However, in all considerations of liquid flow and pump performance the operative factor is the kinematic viscosity, the corresponding unit being the stokes (100 centistokes). stokes (centistokes) =
Poises (centipoises)
specific gravity
Common viscometers (Redwood, Saybold, Engler, etc) give readings having arbitrary relationship to fundamental units. Conversion figures are given in the schedule overleaf. These are approximate only as they may vary slightly with temperature and other factors, and are not universally agreed on, but they are sufficiently accurate for the purposes under consideration. The only values of interest to the pump engineer are kinematic viscosity at actual pumping temperatures. Viscosities are frequently quoted at standard reference temperatures, commonly 100ºF (37.8ºC) or 60ºC (140ºF). If either of these does not correspond with the actual pumping temperature, the viscosity at the latter must be obtained from product data or estimated from general viscosity/temperature curves. The performance of a centrifugal pump when handling a viscous liquid depends not only on the viscosity of the liquid but also its relative size and on whether the pump is of low or high specific speed design. The smaller the required pumping duty, the lower the viscosity for which centrifugal pumps are appropriate. For these reasons it is necessary that all enquiries for pumps to handle viscous liquids should be submitted to the pump maker for individual consideration.
Contents
57
Contents
HYDRAULIC DESIGN DATA
In the last column of the schedule, indications have been given of the approximate minimum practical size of centrifugal pump corresponding to each viscosity. In general, for greater viscosities exceeding 25 stokes, pumps of a positive displacement type should be used.
58
20
30
40
50
60
70
80
90
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
0.07
10
7
0.06
0.1
6
0.05
9
5
0.04
0.09
4
0.03
8
3
0.02
0.08
1
2
0.01
Kinematic Kinematic Viscosity Viscosity Stokes Centistokes
Contents
364
324
284
244
203
163
123
85.0
51.7
48.8
46.0
43.2
40.5
37.9
35.3
33.0
30.9
29.0
Redwood No 1 Seconds
416
370
323
277
231
186
141
97.5
58.6
55.4
52.0
48.7
45.5
42.3
39.1
36.2
33.5
31.0
Saybolt Universal Seconds
606
559
473
406
340
274
209
147
93.9
89.3
84.7
80.1
75.9
71.3
67.2
62.6
57.5
51.3
Engler Seconds
11.8
10.5
9.21
7.90
6.61
5.33
4.07
2.87
1.83
1.74
1.65
1.56
1.48
1.39
1.31
1.22
1.12
1.00
36
32
28
24
20
16
12
9
-
-
-
-
-
-
-
-
-
-
44.0
39.5
35.0
30.5
26.0
22.2
18.5
15.0
-
-
-
-
-
-
-
-
-
-
68.9
77.5
88.6
103
124
153
207
310
620
689
775
886
1033
1240
1550
2067
3100
6200
Redwood Saybolt Engler Barbey Admiralty Furol Degrees Fluidity Seconds Seconds
50-65
50-65
50-65
40-50
40-50
32-40
25-32
20-25
No reasonable limitation
Minimum Size Centrifugal Pump (mm)
APPROXIMATE VISCOSITY CONVERSION SCHEDULE
59
100
200
300
400
500
600
700
800
900
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
1
2
3
4
5
6
7
8
9
10
0
30
40
50
60
70
80
90
100
Kinematic Kinematic Viscosity Viscosity Stokes Centistokes
40500
36450
32400
28350
24300
20250
16200
12150
8100
4050
3645
3240
2835
2430
2025
1620
1215
810
405
Redwood No 1 Seconds
46200
41580
36960
32340
27720
23100
18480
13860
9240
4620
4158
3696
3234
2772
2310
1848
1386
924
462
Saybolt Universal Seconds
67700
60600
53900
47300
40600
33800
27000
20300
13500
6770
6060
5390
4730
4060
3580
2700
2030
1350
677
Engler Seconds
1316
1180
1050
921
789
658
526
395
263
132
118
105
92.1
78.9
65.8
52.6
39.5
26.3
13.2
4050
3645
3240
2835
2430
2025
1620
1215
810
405
365
324
284
243
203
162
122
81
41
4700
4230
3760
3290
2820
2350
1880
1410
940
470
423
376
329
282
235
188
141
94.7
48.5
1.03
1.24
1.55
2.07
3.10
6.2
6.9
7.8
8.9
10.3
12.4
15.5
20.7
31.0
62.0
Redwood Saybolt Engler Barbey Admiralty Furol Degrees Fluidity Seconds Seconds
Positive displacement pump required
400-450
300-350
250-300
250-300
200-250
200-250
175-200
150-175
125-150
80-100
50-80
Minimum Size Centrifugal Pump (mm)
HYDRAULIC DESIGN DATA
Contents
60
Section 21
TEST TOLERANCES AND DIFFERENT STANDARDS API 610 9th Edition The following tolerances shall apply: • Test speed shall be within ± 3.0% of rated speed shown on pump data sheet, at duty point. • Rated differential head at duty -
0m to 150m - 2% to 5%
151m to 300m - 2% to 3%
Over 300m - 2% to 2%
• Rated differential head shutoff -
0m to 150m - 10%* to 10%
151m to 300m - 8%* to 8%
Over 300m - 5%* to 5%
• Rated Power at duty - +4% (Cumulative tolerances are not acceptable) • Rated NPSH at duty -
+0%
• Efficiency is not a rating value. Note: = If a rising head flow curve is specified, the negative tolerance specified here shall be allowed only if the test curve still shows a rising characteristic.
British Standards – (Class C) The following tolerances shall apply at duty flow rate: • Rate of flow
± 3.5%
• Pump Total head
± 3.5%
• Pump Input power
± 3.5%
• Pump Efficiency
± 5.0%
Contents
61
HYDRAULIC DESIGN DATA
Hydraulic Institute Test Standards In making tests under this standard no minus tolerance or margin shall be allowed with respect to capacity, total head or efficiency at the rated or specified conditions. The following tolerances shall apply: • At rated head
+10% of rated capacity
OR • At rated capacity +5% of rated head under 500 feet
+3 % of rated head 500 feet and over
Conformity with only one of the above tolerances is required. It should be noted that there might be an increase in horsepower at the rated condition when complying to plus tolerances for head or capacity. For a fire pump the following tolerances from NFPA 20 shall also apply: • At 150% of rated capacity, head will range from minimum of 65% to maximum of just below rated head. • Shutoff head will range from minimum of 101% to maximum of 140% of rated head. Exception If available suction supplies do not permit the flowing of 150% of rated capacity, the fire pump shall be operated at maximum allowable discharge to determine if it is acceptable. This reduced capacity shall not constitute an unacceptable test.
Contents
62
ISO 9906:2000 (grade 1) Table 10 The following tolerances shall apply at duty flow rate: • • • •
Rate of flow Pump Total head Pump Efficiency Speed of rotation
± 4.5 % ±3% -3% ±1%
ISO 9906:2000 (grade 2) Table 10 The following tolerances shall apply at duty flow rate: • Rate of flow
±8%
• Pump Total head
± 5.5 %
• Pump Efficiency
-5%
• Speed of rotation
±1%
ISO 9906:2000 (grade 2) Annex A.1 – Pumps produced in series. The following tolerances shall apply at duty flow rate: • Rate of flow
±9%
• Pump Total head
±7%
• Pump Input Power
+9%
• Driver Input Power
+9%
• Pump Efficiency
-7%
ISO 9906:2000 (grade 2) Annex A.2 – Pumps with a driver power input less than 10 kW The following tolerances shall apply at duty flow rate: • Rate of flow
± 10 %
• Pump Total head
±8%
63
Contents
The following tolerances shall apply: • Rate of flow
±0%
• Pump total head
+5 %
• Pump input power
within duty rating and/or driver rating + 10%
Underwrites Laboratories (UL) The following tolerances shall apply: • At rated head
+10% of rated capacity
OR • At rated capacity
+5% of rated head under 500 feet
• At 150% of rated capacity, the pump will develop not less than 65% of rated head. • The maximum net pressure for a fire pump shall not exceed 140% of rated head. Note: No minus tolerance or margin shall be allowed with respect to capacity, total head or efficiency at the rated or specified conditions.
Contents
64 64
HYDRAULIC DESIGN DATA
Loss Prevention Council (LPC)
VELOCITY HEAD CORRECTION
Contents
65
Tables of Velocity Head Correction (Bar) Flow (Litres/Minute) Di
Dd
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
50
80
0.305
0.369
0.440
0.516
0.598
0.687
0.782
0.882
0.989
1.102
65
80
0.071
0.086
0.102
0.120
0.139
0.160
0.182
0.206
0.231
0.257
80
100
0.032
0.039
0.047
0.055
0.064
0.073
0.083
0.094
0.105
0.117
80
150
0.051
0.061
0.073
0.085
0.099
0.114
0.129
0.146
0.164
0.182
100
125
0.013
0.016
0.019
0.022
0.026
0.030
0.034
0.038
0.043
0.048
100
150
0.018
0.022
0.026
0.031
0.035
0.041
0.046
0.052
0.059
0.065
100
200
0.021
0.026
0.030
0.036
0.041
0.047
0.054
0.061
0.068
0.076
100
250
0.022
0.027
0.032
0.037
0.043
0.049
0.056
0.063
0.071
0.079
125
150
0.005
0.006
0.007
0.008
0.009
0.011
0.012
0.014
0.015
0.017
125
200
0.008
0.009
0.011
0.013
0.015
0.018
0.020
0.023
0.025
0.028
125
250
0.009
0.010
0.012
0.015
0.017
0.019
0.022
0.025
0.028
0.031
150
175
0.002
0.002
0.003
0.003
0.004
0.005
0.005
0.006
0.007
0.007
150
200
0.003
0.004
0.004
0.005
0.006
0.007
0.008
0.009
0.010
0.011
150
250
0.004
0.005
0.006
0.007
0.008
0.009
0.010
0.011
0.013
0.014
150
300
0.004
0.005
0.006
0.007
0.008
0.009
0.011
0.012
0.014
0.015
175
200
0.001
0.001
0.001
0.002
0.002
0.002
0.003
0.003
0.003
0.004
200
225
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.002
0.002
0.002
200
250
0.001
0.001
0.001
0.001
0.002
0.002
0.002
0.002
0.003
0.003
200
300
0.001
0.001
0.002
0.002
0.002
0.003
0.003
0.003
0.004
0.004
250
300
0.000
0.000
0.000
0.001
0.001
0.001
0.001
0.001
0.001
0.001
300
350
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
350
400
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
Di - Smaller diameter (mm) Dd - Larger diameter (mm) Gauge pressure variations, where the flow is from :the smaller diameter to the larger diameter, then VAR. is POS(+) or, the larger diameter to the smaller diameter, then VAR. is NEG(-) Contents
66
VELOCITY HEAD CORRECTION
Flow (Litres/Minute) Di
Dd
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
50
80
1.2211
1.3463
1.4776
1.6149
1.7584
1.9080
2.0637
2.2255
2.3934
2.5674
65
80
0.2847
0.3138
0.3444
0.3765
0.4099
0.4448
0.4811
0.5188
0.5579
0.5985
80
100 0.1298
0.1431
0.1571
0.1717
0.1869
0.2028
0.2194
0.2366
0.2544
0.2729
80
150 0.2021
0.2228
0.2445
0.2673
0.2910
0.3158
0.3415
0.3683
0.3961
0.4249
100 125 0.0532
0.0586
0.0643
0.0703
0.0766
0.0831
0.0899
0.0969
0.1042
0.1118
100 150 0.0723
0.0797
0.0874
0.0956
0.1041
0.1129
0.1221
0.1317
0.1417
0.1520
100 200 0.0844
0.0931
0.1022
0.1117
0.1216
0.1319
0.1427
0.1539
0.1655
0.1775
100 250 0.0878
0.0968
0.1062
0.1161
0.1264
0.1371
0.1483
0.1599
0.1720
0.1845
125 150 0.0191
0.0211
0.0231
0.0253
0.0275
0.0298
0.0323
0.0348
0.0374
0.0402
125 200 0.0313
0.0345
0.0378
0.0413
0.0450
0.0488
0.0528
0.0570
0.0613
0.0657
125 250 0.0346
0.0381
0.0418
0.0457
0.0498
0.0540
0.0584
0.0630
0.0678
0.0727
150 175 0.0082
0.0090
0.0099
0.0108
0.0118
0.0128
0.0138
0.0149
0.0160
0.0172
150 200 0.0122
0.0134
0.0147
0.0161
0.0175
0.0190
0.0206
0.0222
0.0238
0.0256
150 250 0.0155
0.0171
0.0187
0.0205
0.0223
0.0242
0.0262
0.0282
0.0303
0.0326
150 300 0.0167
0.0184
0.0202
0.0221
0.0240
0.0261
0.0282
0.0304
0.0327
0.0351
175 200 0.0040
0.0044
0.0048
0.0053
0.0057
0.0062
0.0067
0.0072
0.0078
0.0084
200 225 0.0021
0.0023
0.0026
0.0028
0.0030
0.0033
0.0036
0.0039
0.0041
0.0044
200 250 0.0033
0.0037
0.0040
0.0044
0.0048
0.0052
0.0056
0.0061
0.0065
0.0070
200 300 0.0045
0.0050
0.0055
0.0060
0.0065
0.0071
0.0076
0.0082
0.0089
0.0095
250 300 0.0012
0.0013
0.0014
0.0016
0.0017
0.0019
0.0020
0.0022
0.0023
0.0025
300 350 0.0005
0.0006
0.0006
0.0007
0.0007
0.0008
0.0009
0.0009
0.0010
0.0011
350 400 0.0002
0.0003
0.0003
0.0003
0.0004
0.0004
0.0004
0.0005
0.0005
0.0005
Contents
67
Flow (Litres/Minute) Di
Dd
3000
50
80
2.7475 2.9338 3.1261 3.3245 3.5291 3.7397 3.9564 4.1793 4.4083 4.6433
3100
3200
3300
3400
3500
3600
3700
3800
3900
65
80
0.6405 0.6839 0.7287 0.7750 0.8227 0.8718 0.9223 0.9742 1.0276 1.0824
80
100 0.2921 0.3119 0.3323 0.3534 0.3752 0.3976 0.4206 0.4443 0.4686 0.4936
80
150 0.4547 0.4855 0.5174 0.5502 0.5840 0.6189 0.6548 0.6917 0.7295 0.7684
100 125 0.1196 0.1277 0.1361 0.1448 0.1537 0.1628 0.1723 0.1820 0.1920 0.2022 100 150 0.1626 0.1736 0.1850 0.1968 0.2089 0.2213 0.2342 0.2474 0.2609 0.2748 100 200 0.1900 0.2029 0.2162 0.2299 0.2440 0.2586 0.2736 0.2890 0.3048 0.3211 100 250 0.1975 0.2108 0.2247 0.2389 0.2536 0.2688 0.2843 0.3003 0.3168 0.3337 125 150 0.0430 0.0459 0.0489 0.0520 0.0552 0.0585 0.0619 0.0654 0.0689 0.0726 125 200 0.0703 0.0751 0.0800 0.0851 0.0903 0.0957 0.1013 0.1070 0.1129 0.1189 125 250 0.0778 0.0831 0.0885 0.0942 0.0999 0.1059 0.1121 0.1184 0.1248 0.1315 150 175 0.0184 0.0197 0.0210 0.0223 0.0237 0.0251 0.0265 0.0280 0.0296 0.0311 150 200 0.0274 0.0292 0.0311 0.0331 0.0351 0.0372 0.0394 0.0416 0.0439 0.0462 150 250 0.0348 0.0372 0.0396 0.0422 0.0448 0.0474 0.0502 0.0530 0.0559 0.0589 150 300 0.0375 0.0401 0.0427 0.0454 0.0482 0.0511 0.0540 0.0571 0.0602 0.0634 175 200 0.0089 0.0095 0.0102 0.0108 0.0115 0.0122 0.0129 0.0136 0.0143 0.0151 200 225 0.0048 0.0051 0.0054 0.0058 0.0061 0.0065 0.0069 0.0072 0.0076 0.0080 200 250 0.0075 0.0080 0.0085 0.0090 0.0096 0.0102 0.0108 0.0114 0.0120 0.0126 200 300 0.0102 0.0109 0.0116 0.0123 0.0131 0.0138 0.0146 0.0155 0.0163 0.0172 250 300 0.0027 0.0029 0.0031 0.0032 0.0034 0.0037 0.0039 0.0041 0.0043 0.0045 300 350 0.0012 0.0012 0.0013 0.0014 0.0015 0.0016 0.0017 0.0018 0.0018 0.0019 350 400 0.0006 0.0006 0.0006 0.0007 0.0007 0.0008 0.0008 0.0009 0.0009 0.0009
Di - Smaller diameter (mm) Dd - Larger diameter (mm) Gauge pressure variations, where the flow is from :the smaller diameter to the larger diameter, then VAR. is POS(+) or, the larger diameter to the smaller diameter, then VAR. is NEG(-)
Contents
68
VELOCITY HEAD CORRECTION
Flow (Litres/Minute) Di
Dd
4000
50
80
4.8845 5.1318 5.3852 5.6447 5.9102 6.1820 6.4598 6.7437 7.0337 7.3298
4100
4200
4300
4400
4500
4600
4700
4800
4900
65
80
1.1386 1.1963 1.2553 1.3158 1.3777 1.4411 1.5058 1.5720 1.6396 1.7086
80
100
0.5193 0.5456 0.5725 0.6001 0.6283 0.6572 0.6867 0.7169 0.7477 0.7792
80
150
0.8084 0.8493 0.8912 0.9342 0.9781 1.0231 1.0691 1.1160 1.1640 1.2130
100
125
0.2127 0.2235 0.2345 0.2458 0.2574 0.2692 0.2813 0.2936 0.3063 0.3192
100
150
0.2891 0.3037 0.3187 0.3341 0.3498 0.3659 0.3823 0.3991 0.4163 0.4338
100
200
0.3377 0.3548 0.3724 0.3903 0.4087 0.4274 0.4467 0.4663 0.4863 0.5068
100
250
0.3510 0.3688 0.3870 0.4057 0.4247 0.4443 0.4642 0.4846 0.5055 0.5268
125
150
0.0764 0.0803 0.0842 0.0883 0.0924 0.0967 0.1010 0.1055 0.1100 0.1146
125
200
0.1250 0.1314 0.1379 0.1445 0.1513 0.1583 0.1654 0.1726 0.1801 0.1876
125
250
0.1383 0.1453 0.1525 0.1599 0.1674 0.1751 0.1830 0.1910 0.1992 0.2076
150
175
0.0327 0.0344 0.0361 0.0378 0.0396 0.0414 0.0433 0.0452 0.0472 0.0491
150
200
0.0486 0.0511 0.0536 0.0562 0.0589 0.0616 0.0643 0.0672 0.0700 0.0730
150
250
0.0619 0.0651 0.0683 0.0716 0.0749 0.0784 0.0819 0.0855 0.0892 0.0929
150
300
0.0667 0.0701 0.0736 0.0771 0.0807 0.0844 0.0882 0.0921 0.0961 0.1001
175
200
0.0159 0.0167 0.0175 0.0184 0.0192 0.0201 0.0210 0.0219 0.0229 0.0239
200
225
0.0085 0.0089 0.0093 0.0098 0.0102 0.0107 0.0112 0.0117 0.0122 0.0127
200
250
0.0133 0.0140 0.0147 0.0154 0.0161 0.0168 0.0176 0.0184 0.0191 0.0199
200
300
0.0181 0.0190 0.0199 0.0209 0.0219 0.0229 0.0239 0.0249 0.0260 0.0271
250
300
0.0048 0.0050 0.0053 0.0055 0.0058 0.0060 0.0063 0.0066 0.0069 0.0072
300
350
0.0020 0.0022 0.0023 0.0024 0.0025 0.0026 0.0027 0.0028 0.0029 0.0031
350
400
0.0010 0.0010 0.0011 0.0011 0.0012 0.0013 0.0013 0.0014 0.0014 0.0015
Contents
69
Flow (Litres/Minute) Di
Dd
5000
50
80
7.6320 7.9404 8.2548 8.5754 8.9020 9.2348 9.5736 9.9186 10.2697 10.6268
5100
5200
5300
5400
5500
5600
5700
5800
5900
65
80
1.7791 1.8510 1.9243 1.9990 2.0751 2.1527 2.2317 2.3121 2.3940
2.4772
80
100
0.8114 0.8441 0.8776 0.9116 0.9464 0.9817 1.0178 1.0544 1.0918
1.1297
80
150
1.2631 1.3141 1.3661 1.4192 1.4732 1.5283 1.5844 1.6415 1.6996
1.7587
100
125
0.3323 0.3458 0.3595 0.3734 0.3876 0.4021 0.4169 0.4319 0.4472
0.4627
100
150
0.4517 0.4700 0.4886 0.5075 0.5269 0.5466 0.5666 0.5870 0.6078
0.6290
100
200
0.5277 0.5490 0.5708 0.5929 0.6155 0.6385 0.6620 0.6858 0.7101
0.7348
100
250
0.5485 0.5706 0.5932 0.6163 0.6398 0.6637 0.6880 0.7128 0.7380
0.7637
125
150
0.1194 0.1242 0.1291 0.1341 0.1392 0.1444 0.1497 0.1551 0.1606
0.1662
125
200
0.1954 0.2033 0.2113 0.2195 0.2279 0.2364 0.2451 0.2539 0.2629
0.2720
125
250
0.2162 0.2249 0.2338 0.2429 0.2521 0.2615 0.2711 0.2809 0.2909
0.3010
150
175
0.0512 0.0532 0.0553 0.0575 0.0597 0.0619 0.0642 0.0665 0.0689
0.0713
150
200
0.0760 0.0791 0.0822 0.0854 0.0887 0.0920 0.0953 0.0988 0.1023
0.1058
150
250
0.0968 0.1007 0.1047 0.1087 0.1129 0.1171 0.1214 0.1258 0.1302
0.1348
150
300
0.1042 0.1085 0.1127 0.1171 0.1216 0.1261 0.1308 0.1355 0.1403
0.1451
175
200
0.0248 0.0258 0.0269 0.0279 0.0290 0.0301 0.0312 0.0323 0.0334
0.0346
200
225
0.0132 0.0138 0.0143 0.0149 0.0154 0.0160 0.0166 0.0172 0.0178
0.0184
200
250
0.0208 0.0216 0.0225 0.0233 0.0242 0.0251 0.0261 0.0270 0.0279
0.0289
200
300
0.0282 0.0294 0.0305 0.0317 0.0329 0.0342 0.0354 0.0367 0.0380
0.0393
250
300
0.0075 0.0078 0.0081 0.0084 0.0087 0.0090 0.0094 0.0097 0.0100
0.0104
300
350
0.0032 0.0033 0.0035 0.0036 0.0037 0.0039 0.0040 0.0042 0.0043
0.0045
350
400
0.0016 0.0016 0.0017 0.0017 0.0018 0.0019 0.0019 0.0020 0.0021
0.0022
Di - Smaller diameter (mm) Dd - Larger diameter (mm) Gauge pressure variations, where the flow is from :the smaller diameter to the larger diameter, then VAR. is POS(+) or, the larger diameter to the smaller diameter, then VAR. is NEG(-)
Contents
70
VELOCITY HEAD CORRECTION
Flow (Litres/Minute) Di
Dd
6000
50
80
10.9901 11.3595 11.7350 12.1166 12.5043 12.8981 13.2981 13.7041 14.1162 14.5345
6100
6200
6300
6400
65
80
2.5619 2.6480 2.7355 2.8245 2.9149 3.0067 3.0999 3.1946 3.2906
3.3881
80
100 1.1684 1.2076 1.2475 1.2881 1.3293 1.3712 1.4137 1.4569 1.5007
1.5451
80
150 1.8188 1.8799 1.9421 2.0052 2.0694 2.1346 2.2008 2.2680 2.3362
2.4054
100 125 0.4786 0.4946 0.5110 0.5276 0.5445 0.5616 0.5791 0.5967 0.6147
0.6329
100 150 0.6505 0.6723 0.6945 0.7171 0.7401 0.7634 0.7870 0.8111 0.8355
0.8602
100 200 0.7599 0.7854 0.8114 0.8378 0.8646 0.8918 0.9195 0.9476 0.9761
1.0050
100 250 0.7898 0.8164 0.8433 0.8708 0.8986 0.9269 0.9557 0.9849 1.0145
1.0445
125 150 0.1719 0.1777 0.1835 0.1895 0.1956 0.2017 0.2080 0.2143 0.2208
0.2273
125 200 0.2813 0.2908 0.3004 0.3102 0.3201 0.3302 0.3404 0.3508 0.3614
0.3721
125 250 0.3113 0.3217 0.3324 0.3432 0.3541 0.3653 0.3766 0.3881 0.3998
0.4116
150 175 0.0737 0.0762 0.0787 0.0812 0.0838 0.0865 0.0892 0.0919 0.0946
0.0975
150 200 0.1095 0.1131 0.1169 0.1207 0.1245 0.1285 0.1324 0.1365 0.1406
0.1447
150 250 0.1394 0.1440 0.1488 0.1536 0.1586 0.1636 0.1686 0.1738 0.1790
0.1843
150 300 0.1501 0.1551 0.1603 0.1655 0.1708 0.1762 0.1816 0.1872 0.1928
0.1985
175 200 0.0358 0.0370 0.0382 0.0394 0.0407 0.0420 0.0433 0.0446 0.0459
0.0473
200 225 0.0190 0.0197 0.0203 0.0210 0.0217 0.0223 0.0230 0.0237 0.0244
0.0252
200 250 0.0299 0.0309 0.0319 0.0330 0.0340 0.0351 0.0362 0.0373 0.0384
0.0396
200 300 0.0407 0.0420 0.0434 0.0448 0.0463 0.0477 0.0492 0.0507 0.0522
0.0538
250 300 0.0107 0.0111 0.0115 0.0118 0.0122 0.0126 0.0130 0.0134 0.0138
0.0142
300 350 0.0046 0.0048 0.0049 0.0051 0.0052 0.0054 0.0056 0.0057 0.0059
0.0061
350 400 0.0022 0.0023 0.0024 0.0025 0.0025 0.0026 0.0027 0.0028 0.0029
0.0030
Contents
6500
6600
6700
6800
6900
71
Flow (Litres/Minute) Di
Dd
7000
50
80
14.9588 15.3892 15.8258 16.2685 16.7172 17.1721 17.6331 18.1001 18.5733 19.0526
7100
7200
7300
7400
7500
7600
7700
7800
7900
65
80
3.4870 3.5874 3.6891 3.7923 3.8969 4.0030 4.1104 4.2193 4.3296
4.4413
80
100 1.5903 1.6360 1.6824 1.7295 1.7772 1.8256 1.8746 1.9242 1.9745
2.0255
80
150 2.4756 2.5468 2.6191 2.6923 2.7666 2.8419 2.9182 2.9955 3.0738
3.1531
100 125 0.6514 0.6701 0.6891 0.7084 0.7279 0.7477 0.7678 0.7882 0.8088
0.8296
100 150 0.8853 0.9108 0.9367 0.9629 0.9894 1.0163 1.0436 1.0713 1.0993
1.1276
100 200 1.0343 1.0641 1.0943 1.1249 1.1559 1.1874 1.2192 1.2515 1.2842
1.3174
100 250 1.0750 1.1060 1.1373 1.1691 1.2014 1.2341 1.2672 1.3008 1.3348
1.3692
125 150 0.2340 0.2407 0.2475 0.2545 0.2615 0.2686 0.2758 0.2831 0.2905
0.2980
125 200 0.3829 0.3940 0.4051 0.4165 0.4280 0.4396 0.4514 0.4634 0.4755
0.4877
125 250 0.4237 0.4358 0.4482 0.4607 0.4735 0.4863 0.4994 0.5126 0.5260
0.5396
150 175 0.1003 0.1032 0.1061 0.1091 0.1121 0.1151 0.1182 0.1214 0.1245
0.1277
150 200 0.1490 0.1533 0.1576 0.1620 0.1665 0.1710 0.1756 0.1803 0.1850
0.1897
150 250 0.1897 0.1951 0.2007 0.2063 0.2120 0.2178 0.2236 0.2295 0.2355
0.2416
150 300 0.2043 0.2102 0.2162 0.2222 0.2283 0.2345 0.2408 0.2472 0.2537
0.2602
175 200 0.0487 0.0501 0.0515 0.0529 0.0544 0.0559 0.0574 0.0589 0.0604
0.0620
200 225 0.0259 0.0267 0.0274 0.0282 0.0290 0.0297 0.0305 0.0313 0.0322
0.0330
200 250 0.0407 0.0419 0.0431 0.0443 0.0455 0.0467 0.0480 0.0493 0.0505
0.0519
200 300 0.0553 0.0569 0.0585 0.0602 0.0618 0.0635 0.0652 0.0670 0.0687
0.0705
250 300 0.0146 0.0150 0.0155 0.0159 0.0163 0.0168 0.0172 0.0177 0.0182
0.0186
300 350 0.0063 0.0064 0.0066 0.0068 0.0070 0.0072 0.0074 0.0076 0.0078
0.0080
350 400 0.0030 0.0031 0.0032 0.0033 0.0034 0.0035 0.0036 0.0037 0.0038
0.0039
Di - Smaller diameter (mm) Dd - Larger diameter (mm) Gauge pressure variations, where the flow is from :the smaller diameter to the larger diameter, then VAR. is POS(+) or, the larger diameter to the smaller diameter, then VAR. is NEG(-)
Contents
72
VELOCITY HEAD CORRECTION
Flow (Litres/Minute) Di
Dd
8000
50
80
19.5380 20.0295 20.5271 21.0308 21.5407 22.0566 22.5786 23.1068 23.6410 24.1813
8100
8200
8300
8400
65
80
4.5545 4.6691 4.7851 4.9025 5.0213 5.1416 5.2633 5.3864 5.5109
5.6369
80
100 2.0771 2.1293 2.1822 2.2358 2.2900 2.3448 2.4003 2.4565 2.5133
2.5707
80
150 3.2334 3.3148 3.3971 3.4805 3.5649 3.6502 3.7366 3.8240 3.9125
4.0019
100 125 0.8508 0.8722 0.8938 0.9158 0.9380 0.9604 0.9832 1.0062 1.0294
1.0530
100 150 1.1564 1.1855 1.2149 1.2447 1.2749 1.3054 1.3363 1.3676 1.3992
1.4312
100 200 1.3509 1.3849 1.4193 1.4542 1.4894 1.5251 1.5612 1.5977 1.6346
1.6720
100 250 1.4041 1.4394 1.4752 1.5114 1.5480 1.5851 1.6226 1.6606 1.6990
1.7378
125 150 0.3056 0.3133 0.3211 0.3289 0.3369 0.3450 0.3532 0.3614 0.3698
0.3782
125 200 0.5002 0.5128 0.5255 0.5384 0.5514 0.5646 0.5780 0.5915 0.6052
0.6190
125 250 0.5533 0.5673 0.5814 0.5956 0.6101 0.6247 0.6395 0.6544 0.6695
0.6849
150 175 0.1310 0.1343 0.1376 0.1410 0.1444 0.1479 0.1514 0.1549 0.1585
0.1621
150 200 0.1946 0.1995 0.2044 0.2094 0.2145 0.2197 0.2249 0.2301 0.2354
0.2408
150 250 0.2478 0.2540 0.2603 0.2667 0.2731 0.2797 0.2863 0.2930 0.2998
0.3066
150 300 0.2669 0.2736 0.2804 0.2872 0.2942 0.3013 0.3084 0.3156 0.3229
0.3303
175 200 0.0636 0.0652 0.0668 0.0684 0.0701 0.0718 0.0735 0.0752 0.0769
0.0787
200 225 0.0338 0.0347 0.0356 0.0364 0.0373 0.0382 0.0391 0.0400 0.0409
0.0419
200 250 0.0532 0.0545 0.0559 0.0572 0.0586 0.0600 0.0614 0.0629 0.0643
0.0658
200 300 0.0723 0.0741 0.0759 0.0778 0.0797 0.0816 0.0835 0.0855 0.0874
0.0894
250 300 0.0191 0.0196 0.0201 0.0206 0.0211 0.0216 0.0221 0.0226 0.0231
0.0236
300 350 0.0082 0.0084 0.0086 0.0088 0.0090 0.0092 0.0095 0.0097 0.0099
0.0101
350 400 0.0040 0.0041 0.0042 0.0043 0.0044 0.0045 0.0046 0.0047 0.0048
0.0049
Contents
8500
8600
8700
8800
8900
73
Di
Dd
9000
50
80
24.7278 25.2804 25.8390 26.4038 26.9747 27.5517 28.1347 28.7239 29.3192 29.9206
9100
9200
9300
9400
9500
9600
9700
9800
9900
65
80
5.7643 5.8931 6.0233 6.1550 6.2881 6.4226 6.5585 6.6958 6.8346
6.9748
80
100 2.6288 2.6875 2.7469 2.8070 2.8677 2.9290 2.9910 3.0536 3.1169
3.1808
80
150 4.0923 4.1838 4.2762 4.3697 4.4642 4.5597 4.6562 4.7537 4.8522
4.9517
100 125 1.0768 1.1008 1.1251 1.1497 1.1746 1.1997 1.2251 1.2508 1.2767
1.3029
100 150 1.4635 1.4962 1.5293 1.5627 1.5965 1.6307 1.6652 1.7000 1.7353
1.7709
100 200 1.7098 1.7480 1.7866 1.8257 1.8651 1.9050 1.9454 1.9861 2.0273
2.0688
100 250 1.7771 1.8168 1.8569 1.8975 1.9386 1.9800 2.0219 2.0643 2.1071
2.1503
125 150 0.3868 0.3954 0.4041 0.4130 0.4219 0.4309 0.4401 0.4493 0.4586
0.4680
125 200 0.6330 0.6472 0.6615 0.6759 0.6906 0.7053 0.7202 0.7353 0.7506
0.7660
125 250 0.7003 0.7160 0.7318 0.7478 0.7640 0.7803 0.7968 0.8135 0.8304
0.8474
150 175 0.1658 0.1695 0.1732 0.1770 0.1809 0.1847 0.1886 0.1926 0.1966
0.2006
150 200 0.2463 0.2518 0.2573 0.2630 0.2686 0.2744 0.2802 0.2861 0.2920
0.2980
150 250 0.3136 0.3206 0.3277 0.3348 0.3421 0.3494 0.3568 0.3642 0.3718
0.3794
150 300 0.3377 0.3453 0.3529 0.3606 0.3684 0.3763 0.3843 0.3923 0.4004
0.4087
175 200 0.0805 0.0823 0.0841 0.0859 0.0878 0.0897 0.0916 0.0935 0.0954
0.0974
200 225 0.0428 0.0438 0.0447 0.0457 0.0467 0.0477 0.0487 0.0497 0.0508
0.0518
200 250 0.0673 0.0688 0.0703 0.0719 0.0734 0.0750 0.0766 0.0782 0.0798
0.0814
200 300 0.0915 0.0935 0.0956 0.0977 0.0998 0.1019 0.1041 0.1063 0.1085
0.1107
250 300 0.0242 0.0247 0.0253 0.0258 0.0264 0.0269 0.0275 0.0281 0.0287
0.0292
300 350 0.0104 0.0106 0.0108 0.0111 0.0113 0.0115 0.0118 0.0120 0.0123
0.0125
350 400 0.0050 0.0051 0.0053 0.0054 0.0055 0.0056 0.0057 0.0058 0.0060
0.0061
Di - Smaller diameter (mm) Dd - Larger diameter (mm) Gauge pressure variations, where the flow is from :the smaller diameter to the larger diameter, then VAR. is POS(+) or, the larger diameter to the smaller diameter, then VAR. is NEG(-)
Contents
74
VELOCITY HEAD CORRECTION
Flow (Litres/Minute)
ELECTRICAL DESIGN DATA
Contents
75
Section 23
AVERAGE EFFICIENCIES AND POWER FACTORS OF ELECTRIC MOTORS Efficiency %
Typical PF
kW
2 Pole
4 Pole
6 Pole
Full load
¾ load
½ load
0.75
77.4
79.6
79.6
0.75
0.69
0.56
1.1
79.6
81.4
78.1
0.77
0.71
0.59
1.5
81.3
82.8
79.8
0.77
0.71
0.59
3
84.5
85.5
83.3
0.82
0.77
0.67
5.5
87
87.7
86
0.82
0.77
0.67
7.5
81.1
88.7
87.2
0.84
0.8
0.71
11
89.4
89.8
88.7
0.84
0.8
0.71
18.5
90.9
91.2
90.4
0.84
0.8
0.71
22
91.3
91.6
90.9
0.84
0.8
0.71
30
92
93.2
91.7
0.84
0.8
0.71
37
92.5
92.7
92.2
0.86
0.83
0.75
45
92.9
93.1
92.7
0.86
0.83
0.75
55
93.2
93.5
93.1
0.86
0.83
0.75
75
93.8
94
93.7
0.86
0.83
0.75
90
94
94.2
94
0.86
0.83
0.75
110
94.3
94.5
94.3
0.86
0.83
0.75
132
94.6
94.7
94.6
0.87
0.84
0.76
Note: Power factors are of importance where the current is charged on a kVA basis. The power factors of motors may be improved by the use of a suitable condenser. To find the output kw of motors when Current, Efficiency and Power Factor (PF) are known.
Direct Current
kW
=
volts x amps x eff % 1000 x 100
Alternating Current Single phase –
kW
=
volts x amps x eff % x PF
1000 x 100 Contents
76
kW
electrical design data
Three phase – = volts x amps x eff % x PF x 1.73
1000 x 100
Kilowatt consumption of any motor
= Output kW x 100
eff %
To find amperes to be carried by cable connections to a motor when output kW, Volts, Efficiency and Power Factor (PF) are known.
Direct current amps = kW x 1000 x 100
volts x eff %
Alternating current
Single phase amps
= kW x 1000 x 100
volts x eff % x PF
Three phase, amps per phase
= kW x 1000 x 100
volts x eff % x PF x 1.73
Contents
77
Section 24
APPROXIMATE FULL LOAD SPEEDS (RPM) OF ALTERNATING CURRENT MOTORS Frequency kW
No of poles
25
30
40
50
60
0.75
2 Pole
1430
1716
2288
2860
3432
to
4 Pole
720
864
1152
1440
1728
2.2
6 Pole
475
570
760
950
1140
3
2 Pole
1450
1740
2320
2900
3480
to
4 Pole
720
864
1152
1440
1728
7.5
6 Pole
480
576
768
960
1152
11
2 Pole
1472.5
1767
2356
2945
3534
to
4 Pole
730
876
1168
1460
1752
22
6 Pole
485
582
776
970
1164
30
2 Pole
1485
1782
2376
2970
3564
to
4 Pole
740
888
1184
1480
1776
75
6 Pole
495
594
792
990
1188
Contents
78
electrical design data
Section 25
STARTING ALTERNATING CURRENT MOTORS Squirrel Cage Motors Method of starting
Starting torque (approx) % Full load torque
Starting current (approx) % Full load current
Direct
100% - 200%
350% - 700%
Star delta (3 phase)
33% - 66%
120% - 230%
Series parallel (2 phase)
25% - 50%
90% - 175%
Auto transformer
25% - 85%
90% - 300%
The above figures apply to Squirrel Cage motors of normal design and other types are available namely: High torque Squirrel Cage machines will give approximately twice the above starting torques with unrestricted currents. Low current Squirrel Cage machines restrict the current but give a lower starting torque than the high torque machines. These two types can now be used in many cases where slipring machines would have been necessary in the past. Slipring machines (2- and 3-phase). All slipring machines must be started by means of a rotor resistance starter. A starting torque of full load torque is obtainable with a starting current of approximately 1 Âź full load current, this usually being sanctioned by supply authorities for any size of motor.
Contents
79
Contents
80
Whole Life Cost
Contents
81
Section 26
Whole Life Cost Principles and Pump Design Whole life cost can be broken down into a number of key components: • Initial Capital Cost • Operating/Energy Costs • Replacement/Wear Part Costs • Maintenance & Repair Costs • Disposal Costs.
Initial Capital Cost Capital cost is the most visible cost and has historically been the primary selection criterion for most items of capital equipment. Pump users are now becoming increasingly aware of post installation costs and their impact on the total cost of ownership. Lowest capital cost purchases rarely prove economic in the longer term and given that the initial capital cost of a centrifugal pump, inclusive of installation, typically equates to between 5%-20% of whole life cost, placing more emphasis on post installation cost will clearly prove much more economic.
Operating/Energy Costs Energy costs can easily equate to as much as 90% of the whole life cost of a pumping installation, dependant on installed power and equipment utilisation. Analysis of operating costs, in terms of energy consumption, is relatively straightforward, given that pump utilisation and demand profiles are understood and predictable. The wire to water efficiency of existing or proposed installations can be compared and the results projected over the estimated lifetime of the installation. This should be a fundamental component of any tender assessment process or existing asset review procedure. Less visible however, is an installations’ capacity to operate at or near optimum efficiency throughout its operational life. A degree of degradation in hydraulic performance is inevitable with time. This degradation in performance is primarily a result of wear and erosion of internal clearances. Wear rings limit fluid re-circulation between the high and low-pressure Contents
82
WHOLE LIFE Cost
areas within a centrifugal pump. A combination of erosion from high velocity fluid passing between the wear ring surfaces and mechanical wear, resultant from shaft deflection, widens the clearances allowing an increase in internal re-circulation. Significantly, highlighting the importance of optimum pump selection, this process will be accelerated if the pump operates at a duty point less than 70% or more than 115% of best efficiency flow. The resultant loss of performance usually leads to the pump running for longer periods to deliver a given quantity of fluid. Erosion of hydraulic profiles and increases in the relative roughness of surfaces in contact with the pumped fluid, will also significantly impact on pump performance.
Replacement/Wear Part Costs The replacement of major components within a pump, whether as a result of wear, erosion or following a component failure is often a very significant contributor to whole life costs. A replacement rotating assembly will typically equate to 70% of the costs of a replacement pump. It is not uncommon for all components forming the rotating assembly to require replacement within the lifetime of an installation. The selection of a conservatively engineered pump, manufactured from high-grade materials should negate this, substantially reducing maintenance costs and increasing the mean time between failure and major service outages. Parts supplied by the original pump manufacturers are likely to provide the highest levels of compatibility and will include any reliability modifications that have been developed since the original date of manufacture. SPP’s parts division provides a comprehensive section of spares for SPP and Crane pumps. We can also provide a wide range of re-engineered parts for other manufacturers’ pumps.
Maintenance & Repair Costs The cost of regular monitoring and preventative maintenance is a necessary component of an installations’ whole life cost and historical evidence shows that regular maintenance is a lower cost option than unplanned emergency repairs. When calculating the cost of maintenance, installation downtime and resultant loss of productivity should be considered. Savings associated with increased mean time between failure and service outages will offset any higher initial capital costs incurred when installing a well-engineered pump, designed for ease of maintenance. SPP’s service division can provide a range Contents
83
of field and service centre based preventative maintenance programmes to support our customers’ production and shut-down schedules. These can vary between simple annual or biannual site based maintenance through to planned pump and valve swap-out programmes to support maximum plant uptime. A well-engineered installation should be so designed as to offer good bearing and seal life and facilitate all but a major overhaul in-situ, without recourse to disturb either pipework or prime movers.
Disposal Costs Disposal costs are relatively minor. Use of higher grade materials may enhance recycling value but this is minimal in the pumps whole life cost and is normally ignored.
Features of a Low Life-cycle Cost Centrifugal Pump The majority of pumps employed on utility type applications fall into one of the following categories: Horizontal Split Casing, Vertical Suspended Bowl or End Suction Pumps. Only the latter are regularly manufactured to recognised international standards e.g. ISO 5199. The requirement for low life-cycle cost pumps is generally applicable to pumps with branch sizes 150mm and above, where power requirements are higher, so it is not usually relevant to the majority of End Suction Pump applications. The following key areas have been identified by pump end users and designers in relation to low life-cycle cost applications.
Mechanical Design A significant change has taken place over the last decade in that the switch from soft packed glands to mechanical seals for shaft sealing on utility applications is near universal. The benefits of this change however have not been fully realised, as mechanical seal life is generally proportional to certain key aspects of pump performance, not least shaft deflection, vibration levels and seal chamber design. The vast majority of utility pumps available today have their design roots in the packed gland era. In many instances this is leading to premature bearing and seal failures, as many pump shafts are quite simply too flexible without the support of numerous packing rings and neck bushes.
This is arguably the most significant factor, influencing the mean time between Contents
84
WHOLE LIFE Cost
failures of utility pumps. Mechanical seals and bearings are intolerant of shaft deflection and residual unbalance. Therefore it is suggested that a pump designed for low life-cycle cost would have a shorter span between bearings and an increased shaft diameter when compared to a similar pump designed in the packed gland era. Specifically shafts should be so designed, as to limit shaft deflection at the limits of the operating range of say, 50% - 115% of best efficiency flow, to a maximum of 0.05mm at the seal faces. Bearings likewise should be designed to provide a minimum L10 life of 50,000 hours at these limits.
Hydraulic Design With the aid of 3-Dimensional Computational Fluid Dynamics, pump manufacturers are now able to produce hydraulic designs that achieve the theoretical maximum efficiency for a given specific speed or impeller geometry. The challenge is then to consistently replicate these designs in material form. High quality manufacturing techniques and procedures are therefore essential, particularly as pump casings and impellers (the most dimensionally critical components of any centrifugal pump) tend to be produced as castings. Only foundry techniques that ensure a high standard of dimensional accuracy and surface finish should be employed in low life-cycle cost pump production.
Efficiency Degradation The maximum benefit of installing an energy efficient machine will only be realised if performance levels can be maintained for long periods of time between overhauls. Performance degradation is inevitable, however a combination of good hydraulic and mechanical design can have a positive impact in this area and prolong optimum efficiency for much longer periods of time. Hydraulic design considerations are: • Maintenance of optimum clearances between the impeller outside diameter and the volute cut-water, which will avoid vane pass cavitation. • Optimisation of impeller geometry with satisfactory suction specific speed values, this will limit internal re-circulation and facilitate a wide band of operation (30%-115% of best efficiency flow). Contents
85
• Application of internal hydrophobic coating (low electronic affinity) in order to reduce the relative surface roughness value of the pump casing; thus maintaining the relative surface roughness values at a more constant level, unlike that of a bare metal casing, which will oxidise once put into service immediately impacting on hydraulic performance.
Mechanical design considerations • Minimisation of shaft deflection will ensure no contact between impeller eye ring and sealing/wear rings surfaces, thus maintaining ‘as new’ clearances for longer periods. • Often overlooked but highly important is wear ring design. A labyrinth profile will help to provide a staged pressure drop across the wear ring, rather than simply allowing high velocity fluid to flow across wear ring faces rapidly eroding internal clearances. • High-grade materials of construction for the pump impeller with good erosion/corrosion properties will ensure that the relative roughness of hydraulic surfaces remain reasonably smooth throughout.
Packaging the Pumpset When packaging a low life-cycle cost pump with a suitable prime mover, it is important to ensure that the same fundamental design principles be applied to the prime mover, baseplate/mounting assembly. The benefits of a superior hydraulic design and first class component quality can easily be forfeited by coupling the highly efficient pump to a lower efficiency driver. Likewise bearing and seal design lives will not be realised if the pump and driver are connected via a flexible and inadequate baseplate or mounting frame. The mounting arrangement as well as being rigid should facilitate a high degree of in-situ maintenance. Mechanical seals and bearings should be accessible without recourse to disturb either driver alignment of connecting pipework. This dictates the use of spacer type couplings, if drive end bearings and seals are to be maintainable in-situ. Only through the application of all these design and packaging principles will the true benefits of Low Life-cycle Cost pumping be realised by the end user. Contents
86
ENERGY
Contents
87
Section 27
SPP Energy – Energy Saving Services Pumps are the single largest user of motive power in both industrial and commercial applications in the UK, accounting for over 30% of total power consumption within these sectors. Pumps account for approximately 13% of the UK’s total annual electrical consumption (BPMA Data) and energy consumption during operation has been identified as the most significant impact of pumps on the environment. In recent years, energy costs have become volatile with Oil, Gas and Coal prices at record levels. With this in mind, SPP has identified the need to operate pump systems more efficiently, and can realistically offer reductions in energy consumption and running costs by 30 to 50%.
Saving Costs, Saving Energy, Saving the Environment It is estimated that over 11 million motors with a total capacity of 90 GW are installed in UK industry – which represents about 40% of the UK’s total electricity consumption. With pumps contributing nearly a third of this consumption, there is considerable scope to reduce carbon emissions by improving pump system efficiency. SPP Energy Division promotes the benefits of auditing complete pump systems and producing recommendations to minimise the energy consumption of pumps and their associated systems. SPP Energy Division can also if required supply many of the solutions capable of realising these savings coupled with ongoing monitoring to validate such savings and sustain them through the lifetime of the installation.
Contents
88
ENERGY
Savings through innovation Through the use of proven systems and techniques, SPP Energy offers a complete energy saving solution for pumping systems that can be applied equally to new projects and existing installations. It is clear that pump systems are heavy users of energy, especially large pumps that run continuously. Such pumps are generally oversized and operating far from their best efficiency points. They can suffer from poor pump intake conditions and inefficient running regimes - all wasting considerable amounts of energy. In order to save costs SPP Energy Division will undertake site audits focused on complete pump systems, ultimately producing a detailed report making recommendations for corrective action and clearly showing cost savings, kW/Hr savings, payback time and CO2 reduction. Annual C02 Savings Per 1% Efficiency Improvement 20000 18000 C02 Emissions Savings - kg
16000 14000 12000 10000 8000 20000 miles family car
6000 4000
Round the world flight
2000 0 0
50
100
150
200
250
300
350
400
450
500
550
System Power - kW
Energy Cost Absorbed Power Hours run per year
0.43 220 8750
kg C02/kWh kW hrs
C02 emissions
8277.5 kg C02
Savings per year
Annual Savings Per 1% Efficiency Improvement 3500
Annual saving ÂŁ
3000 2500 2000 1500 1000 500 0
0
50
100
150
200
250
300
350
400
450
500
550
Power absorbed - kW Energy Cost Absorbed Power Hours run per year
7 p/kWh 220 kW 8750 hrs
Saving per year
Contents
ÂŁ1,347.50
89
Services offered by SPP Energy include: a. Site Survey/Audit (including equipment and operating regime) b. Analysis by accredited engineers with Report (which will include recomendations for efficiency improvements) c. Solutions – eg: • Upgrade/ refurbish/replace pumps • Training • Operational recommendations • Computational Fluid Dynamics (CFD) • System Modelling d. Sustained improvements through Lowest Life Cycle cost e. Monitoring and Review • Intrusive measurement (Thermodynamic) • Individual parameter measurement (Non intrusive - Ultrasonic) • Permanent or temporary installations • Pump and system performance log f. Pump Systems Management Contracts.
SPP Energy – Accreditation The SPP Energy Team is certified and accredited in the use of Pump System Analysis Testing (PSAT) – working to globally recognised standards set by the the American Department of Energy. The team also operates within guidelines set by: • Government Legislation • BPMA • Carbon Trust • ISO BS EN etc • Insurance assessors – such as Lloyds, Beauro Veritas, LPC, CEMARS, Achillies etc.
Contents
90
Conversion Factors
Contents
91
Contents
x
x
x
x
x
gals (Imp)
gals (Imp)
gals (US)
gals (US)
acre-inches
x
x
ft3
gal / min
x
ft3
x
x
in3
long tonne (Imp)
x
x
x
acres
miles2
lbs
x
yds2
x
x
ft2
bbls (oil)
100
x
in2
x
1.028
x
miles
x
2.59
x
yards
ha-cm
0.4047
x
feet
bbls (oil)
1.609
645.16
x
feet
92
0.2727
1016
0.4536
0.159
159
0.003785
3.785
0.004546
4.546
0.02832
28.32
16387
0.836
0.0929
0.9144
0.3048
304.8
0.0254
x
inches
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
m3 / h
kg
kg
m3
lit
m3
ha-cm
m3
lit
m3
lit
m3
lit
mm3
km2
ha
m2
m2
mm2
km
m
m
mm
m
mm
x
x
x
3.667
0.000984
2.2046
6.297
x
0.01 0.0063
x x
0.973
x
264.2
x
220 0.2642
x x
0.2200
35.31
0.0353
0.000061
0.3861
2.471
1.196
10.764
0.00155
0.6214
1.0936
3.281
0.00328
39.37
0.03937
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Number of
25.4
x
Number of
inches
Metric to Imperial
Imperial to Metric
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
gal / min
tonne (metric)
lbs
bbls
bbls
ha-cm x 100000 = lit
acre-inches
gals (US)
gals (US)
gals (Imp)
gals (Imp)
ft3
ft3
in3
miles2
acres
yds2
ft2
in2
miles
yards
feet
feet
inches
inches
Number of
Section 28
CONVERSION FACTORS
93
0.001333 10 / s.g.
x
x
x
x
ins Hg
torrs (mm Hg)
torrs (mm Hg)
kg / cm2
x
x
hp
metric hp (CV, PS, PK, CF)
x
0.7457
x
Std atm
hp
1.01325
x
kPa
0.98065
m liquid
0.9863
0.7355
0.10197 / s.g.
0.098065 x s.g.
x
x
kg / cm2
0.0136 / s.g.
0.03386
0.34537 / s.g.
0.02989 x s.g.
x
0.703 / s.g.
x
x
p.s.i.
0.0703
ins Hg
x
p.s.i.
0.06895
0.2778
17.00 / s.g.
0.2834 / s.g.
0.12653 / s.g.
1.04
0.04416
ft liquid
x
x
tons / min
p.s.i.
x
tonnes / h
m3 / hr
x
x
1000 lb / h
x
1000 bpd
0.472
x
x
cumins
barrels / h (bph)
28.32
x
cusecs
1.263
mgd
52.61
x
x
1000 gals / h
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
l/s
metric hp
kW
kW
bar
m
bar
bar
m.liquid
bar
m.liquid
bar
m.liquid
bar
m.liquid
kg / cm2
bar
l/s
l/s
l/s
l/s
l/s
l/s
l/s
l/s
l/s
x
0.792
x
x
x
x
x
x
x
x
x
x
x
x
x
1.0139
1.3596
1.341
0.9879
9.807 x s.g.
10.197 / s.g.
1.197
0.1
750
73.56 x s.g.
29.53
2.896 x s.g.
33.456 / s.g.
1.422 x s.g.
14.22
x x
14.504
3.6
0.0588 x s.g.
3.528 x s.g.
7.903 x s.g.
0.5345
22.65
2.119
0.0353
0.0190
x
x
x
x
x
x
x
x
x
x
=
=
=
=
=
=
=
=
x s.g.
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
hp
metric hp
hp
Std atm
kPa
m liquid
kg / cm2
kg / cm2
torrs
torrs
ins Hg
ins Hg
ft liquid
p.s.i.
p.s.i.
p.s.i.
m3 / hr
tons / min
tonnes / h
1000 lb / h
1000 bpd
bph
cumins
cusecs
mgd
1000 gals / h
conversion factors
Contents
Supplementary data and conversion factors 1 Imp gal
= 10 lb cold fresh water = 1.2 US gal
1 US gal
= 8.33 lb cold fresh water = 0.833 Imp gal
1 Cubic foot
= 6.23 Imp gal = 62.3 lb cold fresh water = 64 lb cold sea water
1 (long) ton
= 2240 lbs = 224 Imp gal cold fresh water
1 (short) ton
= 2000 lbs = 240 US gal cold fresh water
1 barrel (bbl) oil
= 42 US gal = 35 Imp gal
1 acre-inch
= 22610 Imp gal
1 dm3
= 0.220 gals (Imp)
l/s
= (m3 / h) /3.6
Gallons per minute (gpm)
= gallons per hour / 60 = million gallons per day (mgd) / 694.4 = US gpm / 1.2 = cubic feet per second (cusecs) x 374 = cubic feet per minute (cumins) x 6.23
Imperial gpm
= lbs per hour / 600 / specific gravity = tons per min x 224 / specific gravity = tons per hour x 3.74 / specific gravity = barrels (oil) per hour (bph) x 0.583 = 1000’s barrels per day (bpd) x 24.3 x10-6
1 atmosphere (British)
= 14.70 lbs / sq inch (psi) = 30 inches mercury (Hg) = 34 feet of water = psi x 2.31 / specific gravity
Feet head
= ins Hg x 1.133 / specific gravity = atmosphere (British) x 34 / specific gravity
1 Horsepower (hp)
= 33000 ft lbs per minute = 550 ft lbs per second
Flow velocity ‘v’ in pipe v (ft / sec)
= 0.49 x gpm (Imp) d2 d = pipe actual bore in inches Contents
94
=
conversion factors
Flow velocity ‘v’ in pipe v (m / s)
1273.2 x l / s d2
d = pipe actual bore in mm =
Imp gpm x ft hd x s.g.
=
US gpm x ft hd x s.g.
=
lmp gpm x psi
=
Imp gal / hour x psi
3300
‘Water’ horsepower (whp)
3960
1430
85800 Mechanical hp
=
whp x 100 efficiency %
fluid hp = l / s x m x s.g. = l / s x kg / cm2 (metric) = l / s x m x s.g. = l / s x kg / cm2 (British) 75
7.5
76
7.6
fluid kW = l / s x m x s.g. 101.97 Driver output kW
=
l / s x kg / cm2
=
10.197
l / s x bar 10
= fluid kW x 100 / E% (pump efficiency)
required E (fraction)
= fluid kW
E% = fluid kW x 100
kW input to pump
Contents
kW input to pump
95
Section 29
VACUUM TECHNICAL DATA
700 600 500 400
760 700 600 500 400
300 150
60 50 40
100 90 80 70
15
14 10 9 8 7 6
10 9 8 7
5
6
3
4
4
2
3
60 50 40
2 1.5
30
30 20 20
20
15
1 0.9 0.8 0.7 0.6
1 0.9 0.8 0.7
0.5
0.6
0.3
0.4
0.5 15
10 9 8 7 6 5 4
10 9 8 7
1.5
1033 1 0.9 0.8 0.7 0.6 0.5
0.4
5 4
0.15
0.1 0.09 0.08 0.07 0.06
3
5 10
0.3
0.2 0.15
% 0 10 20 30 40
15
0.4
50 60
20 21 22 23 24
0.10 0.09 0.08 0.07
80
25
0.06
27
28
95
0.04 0.03
0.02
90 91 92 93 94
0.05
29 29.1 29.2 29.3 29.4
cmHg mH2O 0 20
0 1 2 3
30
4
10
40
96
98
0.10
0.05
2
0.08
0.04
1.5
0.06
0.03
0.04
0.02
0.006
29.7
29.8
0.005
60
65 66 67 68 69 70
0.003
0.002
99 99.1 99.2 99.3 99.4
99.6 29.9 29.91 29.92 29.93 29.94
˚C
0.5
7
8
4 5
9
72
6
9.5
7 8 9 10
9.8
15
99.7
200
3
10.1
10.2
160
65
150
60
140
55
130
7 8 9 10 12 14 16 18 20
50 45 40
120 110 100
35
40
60 70
150
170
6
50
70 80 90 100
180
70
30
60
190
5
40
75.5 75.6
85
75
30
10
74
95
4
20
73
74.5
212
2
80
2
˚F
1.673 100 90
71
75
99.5
0.004
m 3/kg
50
29.6 0.01 0.009 0.008 0.007
m 3/kg 0.816 0.9 0.1
3
73.5 97
5 6
50
70
26
0.2
0.3
0.2
“Hg 0
29.5
6
3
2
Ata
Water saturation temperature
psia
5
150
100 90 80 70
25
300
300
200
“Hg 30
Saturated water steam volume of 1kg
Torr
Dry air volume of 1kg at 15˚C
mbar 1030 1000 900 800
Vacuum
Absolute pressure
Pressure and vacuum units conversions. Air and saturated water steam specific volumes. Water saturation temperature.
30 25 20
90 80 70
80 90 100
15
60
10
50
150
5
40
200
0
32
250
75.7
75.8
10.3
10.31
99.8
29.95 1
29.96
75.9
Contents
96
Contents
End Suction
Vertical Multi-Stage Suspended Bowl
Horizontally Split
Pump Type
Horizontal, Vertical Open Shaft, Vertical Direct Mounted Electric Motor or Horizontal Electric Motor or Engine Driven Horizontal, Vertical Open Shaft, Vertical Direct Mounted Electric Motor or Horizontal Electric Motor or Engine Driven. Vertical Electric Motor or Engine Driven. Wet well or Dry well. Vertical Electric Motor or Engine Driven. Wet well or Dry well. Horizontal DIN 24255 Electric Motor or Engine Driven. Horizontal Close Coupled Electric Motor Driven. Vertical Close Coupled Electric Motor Driven.
200 mm to 1000 mm. Outputs up to 4500 l/s. Heads up to 275m.
150 to 700mm. Outputs to 2500l/s. Heads up to 275m
100 mm to 600 mm. Outputs up to 2500 l/s. Heads up to 300 m. Pumping from depths up to 100 m.
200 to 1000mm. Outputs to 4500l/s. Heads up to 160m
32 mm to 150 mm. Outputs up to 140 l/s. Heads up to 105 m.
32 mm to 100 mm. Outputs up to 100 l/s. Heads up to 105 m.
40 mm to 100 mm. Outputs up to 60 l/s. Heads up to 65m.
LLC
Turbostream GH, GL, GR, GT
LLC
Unistream
Eurostream
Instream
Horizontal, Vertical Open Shaft, Vertical Direct Mounted Electric Motor or Horizontal Electric Motor or Engine Driven. Hi res, vDin etc.
150 mm to 700 mm. Outputs to 2500 l/s. Heads up to 275m.
Hydrostream
Thrustream
Configurations
Discharge and Performance
SPP Model
PRODUCT / APPLICATION CHARTS PRODUCT APPLICATION CHARTS
Section 30
97
Contents
98
Vertical Direct Mounted or Open Shaft Electric Motor Driven.
Vertical Direct Mounted or Vertical Open Shaft, Electric or Engine Driven. In-Line and Elbow Horizontal Integral Electric Motor Drive. (Custom designs available). Acoustic canopy on road tow or site trailer or skid type chassis
75 mm to 200 mm. Outputs to 100 l/s. Heads up to 60 m. 200 mm to 1100 mm. Outputs up to 4000 l/s. Heads up to 100m. 50 mm to 250 mm. Outputs up to 220 l/s. Heads up to 30 m. 50 – 400mm. Outputs up to 700 l/s. Heads up to 160m 75 mm to 250 mm. Outputs up to 250 l/s. Heads up to 48 m. Up to 100 mm. Outputs up to 20 l/s.
Aquastream
Freeway
Freeway LLC
Autoprime
Stereo / Disintegrator Solids Cutting EQ/EV Solids Diverter
Transformer Oil Pumps
Contractors Pumps
Dry Well Solids Handling Packaged
Horizontal and Vertical Open Shaft. Electric Motor Drive. Tank packages. Electric Motor Drive.
Horizontal or Vertical Electric Motor or Engine Driven.
200 mm to 650 mm. Outputs up to 1800 l/s. Heads up to 28 m.
Dry Well Solids Handling
Configurations
Discharge and Performance
SPP Model
Pump Type
•
•
•
•
Raw sludge
PRODUCT APPLICATION CHARTS
Unscreened Sewage
•
Digested sludge
•
Activated sludge
•
Storm water
•
•
Screened sewage
•
• • •
• •
Water intake
•
•
•
•
•
Boosting
•
•
Town water supply
•
Reservoir pumping
•
•
Ground water extraction
•
• Unistream
•
• Eurostream
Raw water lift
•
•
• Freeway
Service water
•
•
Effluent
•
Sump pumping
•
Drainage
• • •
•
•
•
Hydrostream
LLC Split Case
Fountains
Thrustream
•
Fish farming
•
• •
• •
•
Sand filter washing
•
•
Swimming pools
•
•
Sprinkler irrigation
•
•
Flood irrigation
Contents
Turbine
LLC Vertical
Distintegrator
Stereo
Diverter
SPP Pump Type:
ENVIRONMENTAL SERVICES: Water Supply Water Treatment Sewage Treatment Drainage Agriculture Forestry Contracting
APPLICATIONS
99
• •
•
• • •
•
• •
•
•
•
Ballast/deballast
•
• •
Washdown
•
• •
Utility/service water
•
Crude oil shipping
•
Injection water booster
•
•
Drilling water
•
•
•
Cooling water
•
•
Sea water lift
•
• •
•
•
•
•
• •
Transformer oil cooling
•
• •
Bottle washing
•
• •
Cargo handling
•
Pipeline boosting
•
Tank farm/fuel transfer
•
Spray point
•
•
Oil slops
•
•
•
•
Unistream
Eurostream
Process liquids
•
•
Moulding machine cooling
•
•
Bearing cooling
•
• •
•
•
•
•
LLC Split Case
Hydrostream
•
Robot cooling
•
• • •
Process waste
•
Industrial stock
•
Paper stock
•
•
Raw juices
•
•
Fish farming
•
•
Thyristor cooling
Contents
Turbostream
Transformer Oil
Aquastream
Freeway
Turbine
Thrustream
LLC Vertical
INDUSTRIAL SERVICES: Power Food Paper Sugar Brweing Motor Process Chemical Steel Platics Onshore/Offshore Oild Industry SPP Pump Type:
APPLICATIONS
100
•
• •
• •
•
•
•
• •
•
• • •
•
• •
• •
• •
• • • •
•
•
Unistream
Eurostream
Instream
• •
Sump pumping
•
•
• •
Turbostream
Water supply
Thustream
•
Air washer circulation
•
•
Cooling tower circulation
•
Chilled water circulation
•
Cold water boosting
•
Boosted systems
•
•
Condensate return
•
Hot water circulation
•
• •
Fire fighting marine
• •
•
Fire fighting stationary
•
•
Fire jockey
•
•
•
• • • •
•
•
Hose-reel systems
•
• •
Fire monitor
•
•
Hydrant systems
•
Foam pumping
PRODUCT APPLICATION CHARTS
Sprinkler systems
Contents
Multistream
Drive
Overhead Belt
SPP Pump Type:
Hospital services
Buliding services
Hazard protection
Fire protection
Offshore/onshore
SERVICES
MECHANICAL
FIRE AND
APPLICATIONS
101
SPP Pumps Ltd 1420 Lakeview, Arlington Business Park, Theale, Reading, Berkshire, RG7 4SA Email: solutions@spppumps.com Tel: +44(0)118 932 3123 Fax: +44(0)118 932 3302 www.spppumps.com