Pumps and Valves Africa Q1 - 2016

ENDORSED By SAPMA (South African Pump Manufacturers’ Association) and VAMCOSA (The Valve and Actuator Manufacturers Cluster of South Africa)

Q 1 -2016

TBA TBA

Pumps and Valves Africa - Q4 - 2016

1

KIRLOSKAR VALVES Providing INNOVATIVE & RELIABLE flow control solutions for more than SIX DECADES

Pumps | Valves | Hydro Turbines | Turnkey Projects Water Resource Management | Irrigation | Power | Industry | Oil & Gas | Marine & Defence | Building & Construction| | Distribution (Small Pumps) | Valves | Customer Service & Spares

BRAYBAR PUMPS (PTY) LIMITED A Kirloskar Group Company

Corner of Horn & Brine Street, Chloorkop - Kempton Park, Gauteng, 1620, South Africa Tel : +27 (0)Pumps 11 393 393 7177/81/82 ďż˝ Fax : +27 (0)11 421 6793, sales@braybarpumps.co.za 2 and2841, Valves +27 Africa(0) - Q111 - 2016

Contents ASSOCIATION NEWS From The Chairman’s Desk 4 Introduction to VAMCOSA 5 Second to None Water Pump Solutions from Goscor Power Products 6 PVS Range Vortex Pumps 7 BMG Butterfly Valves Efficient Flow Control 8 Another Disaster Looming? 10 Borehole – An Alternative Water Supply - A Backyard Borehole Drilling Project In Progress 12 Old Technology - New Heart 14 Modern-Day Sewerage Systems Require Expertise and Reliability 16 Innovation in Detail: The New Generation of Elastomer Bellows Seals Emg1 and Emg 18 100% Commitment to Growth in Southern Africa 20 New Pump Range from Metso 21 HFT appointed Fleetguard® Super Dealer for Southern Africa 22 Process Pump Delivery Contract 24 The 750mm / 30” Dual Valve (DFV) 26 Premier Valves Adds Metal Seated Butterfly Valves to its Range 27 Viable Solution to Replace Bucket System In Rural Areas 28 Enough Power for Mars Lander’ NASA Tests First 3D-printed Space Engine 30 Efficient Engineering’s Diversified Strategy Delivers Solid Value 32 A Survival Guide in Times of A Water Crisis 33 Tectra Automation Gains Entry to Oil & Gas Valve Process Market 34

VALVE GUIDE Air Valves 35

ENDORSED By SAPMA (South African Pump Manufacturers’ Association) and VAMCOSA (The Valve and Actuator Manufacturers Cluster of South Africa)

Q 1 -2016

Pumps General Cover.indd 2

4/7/2016 9:51:09 AM

Pumps & Valves Africa

Sales Manager: Helen Benetts Tel: (011) 047-2400 Cell: 083 281 5761 Email: info@pumpsandvalves.co.za www.pumpsandvalves.co.za Production: Jackie Nene Contributors: Ronel Kotze, Tony Stone

Ball Valve 35

Index to Advertisers

Butterfly Valves 36 Check Valves 37

AESSEAL 31

Control Valves 37

Ainsworth

Diaphragm Valves 38

APE Pumps

Fire Hydrants 39 Gate Valves 39 Knife Gate Valves 40

Becker Dual Valves

Plug Valves 41

Grundfos

43

Pneumatic Actuators - Spring return

43

40, 42

EagleBurgmann 19 Franklin

Pneumatic Actuators - Double acting

7

BMG 24

Manual Actuator 41 Pinch Valves 42

38 26, 36

Gunric Valves In-Quest Kirloskar Valves KSB

IBC 13, 44 46 11 IFC OBC

Pressure Reducing Valve (PRV) 44

Metso 25

Safety Valve 45

SAM Engineering

Sleeve Valve 45 Taps, Cocks 46

9

SAPMA OFC Unique Engineering

23

VAMCOSA OFC

Disclaimer Opinions in this Publication are those of the authors and do not necessarily reflect those of this publication, its editorial board, its editor or its Publishers SAPMA. or VAMCOSA The mention of specific products in articles and advertisements does not imply that they are endorsed or recommended by this Publication or its publishers in preference to others of a similar nature, which are not mentioned or advertised. Reliance on any information contained in this journal is at your own risk. While every effort is made to ensure the accuracy of editorial board makes no representations or warranties, express or implied, as to the correctness or suitability contained and/or the products advertised in this publication.

The Publisher shall not be liable for any damages or loss, howsoever arising, incurred by readers of this publication or any other person/s. The Publisher disclaims all responsibility and liability for any damages, includes pure economic loss and any consequential damages, resulting from the use of services or products advertised in this publication. Readers of this publication indemnify and hold harmless the publisher, its officers, employees, and servants for any demand action, application or other proceedings made by any third party and arising out or in connection with the use of any services and/or products or the reliance on any information contained in this publication.

Pumps and Valves Africa - Q4 - 2016

3

ASSOCIATION NEWS

FC D

rom The hairman’s esk

A Grundfos Pump Audit evaluates pump efficiency and the potential for saving energy at a site. A Pump Audit results in an overview of pump performance and suggestions for improvement.

Pump Audits are one of our initiatives to help companies seize massive energy-saving opportunities,” says Michael Laustsen, Application Manager at Grundfos.

Onsite and in-depth During a Pump Audit a Grundfos sales and service engineer work in close cooperation with the pump operator.

The audit involves an onsite inspection, measurement and diagnosis of the pumps installed. The sales engineer produces a report after the data is analysed. Among other factors, the report shows current annual energy consumption of the pumps along with a forecast of savings and payback time for any recommended new pumps and their control systems, explains Michael Laustsen.

Save up to 60 percent Lorraine Smart

P

umps are among the industrialised world’s biggest energy consumers, responsible for 10% of global electrical energy use. At the same time, most pumps waste energy due to incorrect sizing, lack of intelligent control, operation in an inefficient duty point or outdated technology.

Pump audits have produced tangible results for all types of customers. Many types of industries and water supply companies have cut their energy consumption by 40-60%. Their new pumps pay for themselves in little time.

“German brewery Pfungstädter reduced its pump operating costs by nearly two-thirds after a Grundfos Pump Audit revealed inefficiencies in its process cooling pumps.

Hansol Paper, the biggest paper manufacturer in Korea, cut its annual pump operation costs by 40%. And Unilever Ice Cream UK has saved between 20-40% in operational costs after replacing its supply system pumps; payback time for the changeover ranged between three and 12 months,“ says Michael Laustsen.

Any companies or individuals who wish to join SAMPA can contact either SAPMA or SEIFSA lsmart@ grundfos.com or theresa@seifsa.co.za www.grundfos.com 4

Pumps and Valves Africa - Q1 - 2016

The Valve and Actuator Manufacturers Cluster of South Africa (VAMCOSA) was formed in July 2011 and works within the Department of Trade and Industry (the dti) designated cluster parameters. VAMCOSA’s focus is to bring local valve and actuator manufacturers together in order to create a common focus and goal for the respective industries. VAMCOSA provides an effective platform for its members to Lobby Government through designated channels of the dti and operates under the auspices of the South African Capital Equipment Export Council (SACEEC) with regard to industry specific concerns.

ASSOCIATION NEWS

I

ntroduction to VAMCOSA

some protection for major suppliers such as foundries, forge shops, and steel/stainless steel suppliers.

Clarification regarding how the 70% local content is made up includes the use of locally produced and certified castings, forging and fabrication as well as verifiable manufacturing activities such as machining, drilling, coating, assembly and testing.

Further, the averaging-out of local content either across any number of valves and gearboxes / actuator combinations or locally made and imported valves or other items is not permitted. Each individual valve, manual actuator or pneumatic actuator is subject to the minimum 70% local content threshold.

Mark Wilson

Procurement of locally manufactured valves and actuators strengthened The Valve and Actuator Manufacturers Cluster of South Africa (VAMCOSA) is pleased to announce that on 11 February 2016, National Treasury published the updated Instruction Note stipulating the minimum threshold for local production and content for valve products and actuators.

The updated Instruction Note provides clarity on topics such as how local content should be calculated and what constitutes local content, whilst at the same time provides

In addition, the valve type list has been updated to include the “also known as” names of valves. For example a check valve is also known as a non-return valve or reflux valve or tilting disk valve and so on. This to curb the number of state-owned-entities, departments, including municipalities as well as contractors working with state-spend, assuming that by changing the name of the valve in the tender or request for information process, that designation does not apply.

To find out more about VAMCOSA : Mark Wilson – current Cluster Champion 082 892 5719, www.vamcosa.co.za

Pumps and Valves Africa - Q4 - 2016

5

Second to None Water Pump Solutions from Goscor Power Products Goscor Power Products supplies an exceptionally wide range of compact, reliable and efficient water pumps to meet virtually any pump application in the agricultural and construction industries.

“

Robin EX engine, this powerful pump delivers up to 1000 l/ minute and boasts a 32m pump lift capacity and a suction height of 8m, making this unit ideally suited for heavy duty applications that require large pumping capacity.

The comprehensive water pump offering from Goscor Power Products includes clear water, chemical (fertilizer and salt water), slurry, semi- and trash pumps as well as high volume units. “To ensure that we meet our customers’ requirements spot on, we have gone a step further; we have extended our range to be able to offer high quality, world leading premium brand water pumps to more affordable options,” explains Bester.

Goscor Power Products’ water pump technology boasts a number of additional features for economical and trouble-free operation:

A farmer’s water pump requirements are as diverse as the agricultural industry itself,” says Mark Bester, Managing Director for Goscor Power Products. “Whether a farmer needs a water pump to irrigate or fertilize his crops or to pump water to or from storage tanks, we have ensured that we stock a range of petrol and diesel water pumps that is wide enough to meet practically any water pump requirement and budget.”

The PTX320 water pump is the company’s flagship. Driven by the highly advanced, economical and easy to maintain

The LT20XC water pump is a more affordable solution for light duty applications. While lighter on the pocket, the LT20XC certainly does not compromise on quality, performance and reliability; with a 20m pump lift capacity and a suction height of 7m, this pumps has a delivery capacity of up to 360 l/minute.

• A durable and tough construction - the impeller and inner-casing manufactured from cast iron while the pumping casing is manufactured from aluminium die casting; • Self-priming: no water is required for subsequent pumping operation once initial pumping is done; •

Water-resisting seal

properties:

mechanical

The complete water pump range is available and supported by Goscor Power Products’ dealer network which is strategically located across South and southern Africa including Botswana, Mozambique, Namibia, Zambia and Zimbabwe.

Goscor Power Products has over 30 years’ experience in the supply of a holistic spectrum of power equipment including pumps, generators, welders, firefighters, engines, rammers, rollers and compactors, backed by quality parts and reliable technical teams.

Goscor Power Products Tel: +27 (0) 11 230 2600 Email:mbester@goscor.co.za Web: www.goscor-power-products.co.za 6

Pumps and Valves Africa - Q1 - 2016

PVS Range Vortex Pumps

Becker Mining South Africa’s PVS range of vortex pumps has been designed to efficiently pump sludge and slurries containing large abrasive solids and fibrous materials in light, medium and heavy service industries.

The PVS (pumpmor vertical spindle) range, which can handle solids to 72 mm (3 inches) and S.G’s (specific gravities) to 1,5, achieves up to 87 m heads at speeds of 2 950 rpm. These units are available in two and three inch models, with a 0,7 m spindle length and single motor drive.

impeller from turning off if the motor is started in the wrong rotation direction.

These pumps have a sleeve stuffing box clearance that minimises blow-back of materials being pumped around the shaft sleeve, without requiring sealing contact. A high strength pipe column maintains alignment between the bearing frame and its casing. There are no submerged bearings on the cantilevered shaft.

Becker Mining South Africa’s PVS range of vortex pumps has been designed to efficiently pump sludge and slurries containing large abrasive solids and fibrous materials in light, medium and heavy service industries “The most important feature of these vertical pumps is the recessed, nonclog impeller design that prevents binding and clogging problems. Since the impeller is clear of the pump casing, any solids and fibrous materials that enter the suction inlet will be expelled through the pump discharge, without damaging the impeller,” says Theo Cambanis, Becker Mining South Africa. “Another advantage of Becker’s pumps design is that spares are completely interchangeable. This reduces inventory management costs and simplifies on-site repairs. Because all components are locally manufactured, these pumps are readily available and a large stock holding of spares and raw materials ensures swift delivery throughout the country.”

The PVS series, with a robust one piece casing, has been designed to efficiently cope with all types of solids and fibrous materials. A locknut that fastens the impeller to the shaft prevents the

Bearings have been selected for a minimum service life of 24 000 hours when operating at any point on the hydraulic coverage curve with 1,0 S.G. Grease lubrication is standard.

These pumps have a heavy duty construction, with chrome iron CR28% material, which has been hardened to withstand abrasive materials and for increased service life. When in its annealed state, it is 280-400 BHN, after undergoing heat treatment, it is 650-700 BHN. Other materials include cast iron and SS316.

Becker Mining South Africa employs a fully integrated ISO quality management system as part of a dedicated design, manufacturing, testing and repair facility. The company is also able to adjust its extensive range of pumps to suit specific requirements.

Becker Mining South Africa Theo Cambanis Tel: 057 396 2704 E info@za.becker-mining.com Web: www.za-becker-mining.com

Pumps and Valves Africa - Q4 - 2016

7

BMG Butterfly Valves Efficient Flow Control

BMG’s strategy to enhance its fluid technology services to meet growing market demand, encompasses the introduction of new products, with the latest developments in design technologies, materials and coatings.

“BMG’s fluid technology services also cover project engineering and consulting, cylinder design and manufacture, training, repair and testing, as well as onsite container services.”

Bianca centric butterfly valves have a durable plastomer liner suitable for aggressive and corrosive fluids

The company’s extensive range of components for fluid technology systems and general industrial applications, includes valves, hydraulic hoses and fittings, accumulators, cylinders, heat exchangers, hydraulic motors and hydraulic plumbing, as well as pumps and reservoir accessories.

“Compact butterfly valves, with good flow characteristics and low maintenance requirements, are important components in BMG’s extensive range of valves for industrial flow control,” says Willie Lamprecht, national product manager valves, BMG.

An advantage of using quarter turn butterfly valves rather than any other type of valve, is the simple, wafer shaped design, with fewer parts, for easy repair and minimal maintenance An advantage of using quarter turn butterfly valves rather than any other type of valve, is the simple, wafer shaped design, with fewer parts, for easy repair and minimal maintenance.

T

he company’s expansion programme in the fluid technology sector also involves increasing stockholdings through more than 140 BMG branches and a wide distribution network in South Africa and across borders into Swaziland, Zambia, Botswana, Mozambique, Namibia and Tanzania.

“BMG boosts its fluid technology services with dependable technical support to ensure optimum safety, efficiency and extended service life of every system, even in corrosive environments. With broad technical capabilities, the team is able to solve problems, in applications where conventional components have failed after short periods of service,” says Wayne Holton, fluid technology manager, BMG – Bearing Man Group.

8

Pumps and Valves Africa - Q1 - 2016

Although butterfly valves and ball valves are both quarter turn, the benefit of butterfly valves is when they are actuated pneumatically, they open and close very quickly. The rotational disc in butterfly valves is lighter than a ball and these valves requires less structural support than a ball valve of the same diameter.

Unlike a ball valve, the disc of butterfly valves is always present in the passageway within the flow. This means a pressure drop is induced in the flow, regardless of the position of the valve. Ball valves should only be used for isolation, whereas butterfly valves can be safely used for isolation and control of flow.

BMG’s Desponia centric butterfly valves (DN 25 -1600) with

Over 25 years of experience in designing and manufacturing a complete range of centrifugal pumps for a broad spectrum CSO/CP of industrial, process and general applications.

www. same ng.co.za

BMG – Bearing Man Group Wayne Holton Tel: (011) 620 1500 Email: wayneh@bmgworld.net Web: www.bmgworld.net

CS X

MP PU

This range is suitable for reliable performance in diverse industries, including mining, refining, power generation, iron and steel, materials handling, food and beverage, pharmaceutical, paper and pulp, chemical, sugar and automotive.

CP S MP PU

Other valves available from BMG include seated, knife and wedge gate valves, as well as ball type check valves, thermoplastic, diaphragm, pinch and angle seat valves.

E DL N

Special ATEX valves in this range are suitable for use in explosive atmospheres.

CP 7

MP PU

Bianca centric butterfly valves (DN 32 -900) with an on/off and control service, have a durable plastomer liner suitable for aggressive and corrosive fluids. These high performance valves have a 16 bar maximum working pressure and an operating temperature range of between -20C and +200C depending on working conditions.

HM

• Horizontal Split Water Pumps • CPX/HMX Type • SP Type • Vertical Turbine • CPW Type • CSR Type

MP PU

an elastomer liner, are designed for safe and reliable regulation of liquids and gases in diverse industries. This range has a maximum working pressure of 16 bar and an operating temperature range of between -20C and +140C according to the material.

P -C

Desponia centric butterfly valves with an elastomer liner, are designed for safe and reliable regulation of liquids and gases in diverse industries

PO

VERTICAL SP I

Our range of pump products include: • CP/CPO Series • CP7 Type • Vertical Spindle/ Cantilever Pump • HM Process Pumps • CSW Type • CSY Type • Process Pumps

C

Providing customised pump solutions to various industries

Pump design techniques that ensure our pumps are manufactured to last

High performance - high quality products, excellent service

Alloys to suit all applications Proud Manufacturers of SAMCO® Pumps

Pumps and Valves Africa - Q4 - 2016

9

Another Disaster Looming?

It’s not the disaster that has already hit Barberton’s Lily Mine but the potential disaster which looms ahead that should be of concern.

By Tony Stone

F

or the community of Louw’s Creek, a small town midway between Barberton and Kaapmuiden, the 5 February 2016 will always be remembered.

Since the huge sinkhole first appeared at the entrance of the Lily Mine and swallowed three mine employees working in a shipping container being used as a lamp room, there have been three more slope collapses into the hole.

In the latest incident, a large concrete structure at the entrance of the mine tunnel, and soil from a hill next to the sinkhole, broke off and fell into the same hole where the container is buried. Rescue operations were called of due to the high risks involved and imminent danger to rescue personnel. As tragic as this story is, another potential disaster is looming, from a clear and ever-present danger.

The massive sinkhole that formed at the entrance to the Lily mine

As invasive as it can be, water flows into a mine whenever a mine is operated at depths, which is always the case, and even in dry areas. The Louw’s Creek area receives an average of 672 mm of rain per year, with most of this rain occurring during the summer months.

A recent Department of Water and Sanitation study into groundwater showed that, in an evaluation of the structural geology and the hydrogeological conditions of the area, together with a suitable geophysical method for the envi-

ronment, borehole drilling success rates reached 89%. And, besides this success rate, a high median yield was achieved.

According to geohydrologists, groundwater constitutes roughly 60 times that of surface water, which means that the flow of surface water to underground resources (aquifers, fissures, lakes etc) is significant.

Kim Ncube-Hein, a professor of mining geology at WITS University, said, “When a mine collapses, geologically, it’s because the rock strength, meaning the ability of rock to support weight, is overcome by the force of gravity and it collapses. In the case of Lily Mine, where a sinkhole formed, Ncube-Hein expended this was technically not a mine failure but gravity. A sink occurs because the underlying substrata are eaten away by groundwater, such as carbonate, leaving a hole.”

Mining operations at the Lily mine, which is well below the water table, places the mine operators in a potentially serious situation. Water, caused by the amount and pressure of groundwater, which can and does flow into the mine, needs to be pumped out at a constant rate. Now that there is an 80 m deep open pit, the effect of pore water pressure on the stability of the high pit wall creates more instability.

A Google view of the Lily mine’s location

10

Pumps and Valves Africa - Q1 - 2016

This means that an emergency water management plan needs to be implemented – if the mine is to continue operations. Given that it has mineral resources of 1.9 million ounces (21.86 Mt @ 2.70 g/t) and ore reserves of 0.35 million ounces (4.27 Mt @ 2.60 g/t) in an ore body which ex-

tends for at least 2,000 m along the strike and remains open-ended at depths to and in excess of 700 m below surface. Up until the tragedy, the mine was producing 32 000 tons per month, at 2.7 grams per ton.

A range of Hydroyech industrial pumps

Adding to the complexity of the Lily mine equation, the mine is located in the Barberton Greenstone Belt. Its 2 m to 15 m wide ore body is contained within a prominent shear zone situated along, and structurally controlled by, the Lily Fault which defines a major structural break along the northern flank of the Archaean Barberton Greenstone Belt.

Dewatering Mine dewatering is achieved by pumping continuously from a series of dewatering wells around the mine and by installing pumps in special sumps on the mine floor to remove water in mine shafts and tunnels. No doubt Lily engineers understand all the hydrogeological properties of the mine and are in a good position to design an effective and efficient emergency dewatering system that meets all the statutory and mine requirements.

Evens so, mine dewatering operations must optimize the locations and pumping rates of these dewatering wells, as well as to control regional “drawdown”, which, depending on geologic conditions and mining practices, cones of depression (groundwater drawdown areas) can be as small as the mine itself or as large as 25 km2. The Lily mine is on the edge of a major, natural water drawdown area.

Reference: • “Prediction of groundwater inflow and height of the seepage face in a deep open pit mine using numerical finite element model and analytical solutions”, Ahmad Aryafar et al, 2007.

• “The anatomy of a tragedy”, The Star, 23 February 2016.

To fight fire with fire, so to speak, a key strategy would be to lower the groundwater level over a wide area around the mine using the deep well borehole system, which comprises an array of boreholes pumped by submersible pumps.

This will lower the groundwater level and create a cone of depression or drawdown around each borehole. Several boreholes acting in combination can lower groundwater level over a wide area around the mine. And, because the technique does not operate on a suction principle, large drawdowns can be achieved, limited only by the depth of the boreholes, and the hydrogeological conditions.

If nothing is done, or an ineffective system is put in place, the mine will be lost. It will be interesting to see what decisions are taken.

Pumps and Valves Africa - Q4 - 2016

11

Borehole – An Alternative Water Supply A Backyard Borehole Drilling Project In Progress

By Tony Stone

Johannesburg Water has embarked on a city-wide campaign to promote the value of backyard boreholes on properties in the City. Water usage in some of Johannesburg’s more affluent suburbs is way above average and, within the context of South Africa’s crippling drought and water shortages, this has to change.

Backyard borehole dtrilling

G

uided by government policy, the MMC of the Department of Environmental and Infrastructure Services in Gauteng, Matshidiso Mfikoe, launched a borehole campaign on 3 February 2016 at the Bryanston Country Club in Johannesburg.

A quality borehole that is well-maintained is an asset that can last for up to 15 years “Today, there are more reasons than ever for drilling a water borehole, it is an excellent way to access pure and natural

12

underground water.

Although initial costs of drilling and installing pipes and pumps may be high there are many long-term benefits in getting your water straight from the ground,” Lungile Dhlamini, Managing director of Joburg Water, said.

Pumps and Valves Africa - Q1 - 2016

The average depth at which water is struck in Johannesburg is 65 metres, but this varies in different parts of the city. Water depth and rock formations determine the ultimate costs of drilling the borehole.

maintained.

A quality borehole that is well-maintained is an asset that can last for up to 15 years. It also increases significantly the value of the property. There are very little ongoing costs associated with the borehole – provided it is sunk well and properly

Their guidelines are: •

Determine if there are other boreholes in your area. This will give you a good indication whether there is adequate ground water available and at what depths,

•

Use a professional and registered borehole company that offers a complete service and ask for at least two references, especially clients who their borehole for a couple of years as it would provide proof of workmanship and after sales service,

• Acquaint yourself with the municipal by-laws and regulations and take environmental factors into consideration, • Check that there are no water or sewerage pipes or electric cables under the ground where the drilling will take place,

MMC Matshidiso Mfikoe

• Ensure the borehole conforms to safety regulations and do maintenance on a regular basis

•

Remember whether there is water or not , the client carries the cost, so be prepared for any scenario.

•

Benefits of drilling a water borehole

•

Saves cost – borehole water costs less than the average of municipal water.

•

Perfect pressure – a borehole can achieve the water pressure for its purpose.

•

Avoid price hikes – with a borehole system you will not

Managing director of Joburg Water Lungile Dhlamini

be affected by future increases in water prices.

•

Improved quality – water derived from a borehole is often of high quality.

•

Locally sourced – it comes from underneath your property and no energy is wasted on transportation;

•

Saves water – with Borehole water you will be able to save directly because you are going to source pure water from your land rather than from your normal tap.

For more information and professional advice on technical issues, contact the Borehole Water Association of Southern Africa. If not registered with the Association, do so now to take advantage of this opportunity.

OPTIMISED FOR ENERGY EFFICIENT PUMPING

GRUNDFOS (Pty) LTD 16 Lascelles Road Meadowbrook Ext 13.

Germiston 1609 Phone: (+27) 10 248 6000 Pumps and Valves Africa - Q4 - 2016 www.grundfos.co.za

13

Old Technology - New Heart

By Tony Stone

Dense media separation technology is not new. It’s been around since the 1960s and 1970s. But, what has leapfrogged the technology is that it has gone modular, and even mobile, with slurry pumps at the heart of it all.

A Bond modular DMS system

ing the DMS method, such as iron, lead, zinc, chromite, manganese, fluorspar and spodumene, a pyroxene mineral consisting of lithium aluminium inosilicate.

Modular and mobile plants

D

ense Media Separation (DMS) works on the principal that, if a ‘liquid’ media has a specific gravity (SG) of 2.5, every mineral with a SG greater than 2.5 will sink and those lighter than 2.5 will rise to the top and float. To get the optimal ‘liquid’ media, a mixture of fine media material, such as magnetite (SG 5.1) or ferrosilicon (SG 6.8) is suspended in water, which, when mixed with a mineral, forms a slurry with a specific gravity that will allow low density material(s) to float, and other high density material(s) to sink.

Peabody obviously got it right. A lesson learned.

Today, the design and construct of a DMS plant is totally modular, whether static or mobile, which, either way, means the entire structure can be moved. After construction, a plant’s component fit and quality can be checked, prior to transportation to its operational site. With the civils in place, the modular plant can be reconstructed, or mobile plant positioned. Fully computerised, using turnkey PLC software, and running typically off a Microsoft platform, all pumps and valves, fitted alarm triggers, can be remotely controlled. If any component of the plant does not perform to tightly defined parameters in specific zones, which can loosely be described as washing, mixing and separation, the plant can be shut down.

To use coal as the example, and while washing may read as a simple process, there is nothing simple about it. The initial washing process is exactly that, washing, but it also removes the fines and small coal pieces which fall through a sizing and dewatering vibrating sieve during the washing process. This piece of equipment is built to exacting standards of reliability and efficiency.

The SG of separation is the SG of the media slurry. This can range from 1.45 (for coal), to around 2.8 (for diamonds). Magnetite, as a fine media material, is favoured After washing, the coal moves to a miner, a for coal and ferrosilicon for diaconical tank where clean water and finely monds. However, other min- A cross-section of a slurry pump, the heart of a DMS ground magnetite is added in preparation erals can also be harvested us- system 14

Pumps and Valves Africa - Q1 - 2016

for the separation process. At the end of the entire process, the magnetite is recovered for reuse, in order to reduce operating costs. After separation and final washing, the medium is pumped to a magnetic drum that captures the magnetite. It is then scraped off and collected for reuse.

Coal, once mixed in the conSeparation ical tank with clean water takes place and magnetite, is pumped in the DMS’ to two-ended cone shaped hydrocyclone cyclones that utilise fluid pressure energy to create a rotational fluid motion. This rotational motion c a u s e s the relative movement of the materials suspended in the medium, thus permitting separation of the lights (good coal) and the heavies (bad coal and other material) from one another.

The initial washing process is exactly that, washing, but it also removes the fines and small coal pieces which fall through a sizing and dewatering vibrating sieve during the washing process The rotational motion of the fluid is created by the tangential injection of the medium into the cyclone. The discard portion, the heavies, sinks downward and leaves the cyclone at the spigot, while the lights exit upwards via the vortex finder. By extending the cylindrical section of the cyclone and introducing a barrel section, the residence time within the cyclone is effectively increased. This improves the sharpness of separation between the good coal and the discard.

Changes to their coal washing process resulted in cyclone pump systems being larger than necessary to meet system requirements. The performance optimization project conducted on one of the six classifying cyclone pumps identified three energy-saving opportunities, inter alia the motor, belt drive, and pump components of the pumping system.

The modifications saved 87,184 kWh of electricity in annual energy savings, and the overall energy consumption of the pumping system decreased by approximately 15 percent.

According to Peabody, many design engineers purposely oversize pumps, taking into account factors such as safety margins, potential corrosion build up, and the possibility of increased flow requirements in the future. This often leads to throttling the system with a control valve because the pump delivers more flow than the system requires. The result is a pump that is not running at its Best Efficiency Point (BEP).

Possible consequences of this include noise and vibration, excessive bearing loads, cavitation, and excessive power consumption. Pumps that are being throttled and are operating far off their BEP should be considered for retrofit. Possible changes to consider are retrofitting with a smaller pump, using an impeller with a smaller diameter, or slowing the operating speed of the pump. In many cases, these changes will not only save energy, but also increase the reliability of the system.

Peabody obviously got it right. A lesson learned.

To Read All our Magazines Online www.pumpsandvalves.co.za

ENDORSED By SAPMA (South African Pump Manufacturers’ Association) and VAMCOSA (The Valve and Actuator Manufacturers Cluster of South Africa)

Q 1 -2016

After separation, the good and bad coal are washed to recover the magnetite and then conveyed to the relevant stockpiles. The bad heavies can be used for ground fill in an opencast mine for rehabilitation purposes.

Energy optimisation As we learned from Russian engineer and innovator, Geinrich Altshuller, much can be learned by looking at what other folk have done to address a particular problem – and energy is everybody’s problem. Peabody Holding Company completed a project to improve the performance of a coal slurry pumping system at its Randolph Coal Preparation plant.

Pumps General Cover.indd 2

4/7/2016 9:51:09 AM

Pumps and Valves Africa - Q4 - 2016

15

Modern-Day Sewerage Systems Require Expertise and Reliability Rapid urbanization is resulting in an urgent requirement for upgraded sewerage systems in cities throughout Africa where authorities are realizing the importance of reliable and efficient pumps to cope with ever-higher volumes on an around-the clock basis.

I

n addition, authorities are increasingly calling on technical expertise to assist in the design and optimisation of pumping systems in order to design sewerage works that are robust enough to deal with daily peaks and troughs, as well as meeting challenges as a result of weather anomalies, storm water ingress and even drought conditions.

At the forefront of sewerage pumping technology is local manufacturer KSB Pumps and Valves with a full range of products designed and manufactured especially to meet the

industry’s requirements, as well as being rugged enough to handle African conditions. Technical expertise is also available to design and manufacture bespoke systems where required or to lend technical assistance and advice to local authorities.

Future-proof systems KSB water and waste water projects and applications manager, Hendrik Enslin, says that nowadays technical advice and support is equally as critical as choosing the right system and design in the first place. He adds that with the right system sewerage works should be able to cope with almost any eventuality and remain reliable for more than 20 years.

Technical advice and support is equally as critical as choosing the right system and design “In recent times municipalities and water authorities across Africa have moved away from a purely cost-based procurement model to rather focus on procuring systems and expertise from local manufacturers with a long and reliable track record of quality products backed-up by efficient and reliable service and support.

“We have been in this industry for more than 50 years and are still standing-by and supporting some of the original old pumps that remain in operation today. That says a lot about our commitment to support our products in the field, as well as the quality of the pumps that we produce. That is the main reason why water authorities are turning to us to maintain and install systems around Africa,” Hendrik says.

Ease of maintenance He explains that the requirement nowadays is for long-life pumps with ease-of-maintenance and interchangeability in case of problems. Due to economic constraints it is no longer viable to simply replace pumps and the trend is rather to install serviceable pumps that can be maintained quickly without major disruption to the system.

KSB Pumps and Valves water and waste water projects and applications manager, Hendrik Enslin

16

Pumps and Valves Africa - Q1 - 2016

The systems themselves are being designed with multiple

“making a plan” with the next most suitable solution.

“That is the benefit of dealing with KSB and utilizing the enormous range of pumps valves and related equipment, as well as having the ability to design and manufacture bespoke pumps right here in South Africa,” Hendrik adds.

Range of pumps KSB Pumps and Valves has a wide range of fit-for-purpose pumps in a variety of different materials to suit conditions. The headline sewer range includes Sewatec purpose-built sewerage and waste water pumps with run-dry capability and double mechanical sealed system for reliable long duration pumping without maintenance.

The KRT range of wet and dry application pumps are sophisticated pumps designed to work in submersible, semi-submersible and dry conditions allowing adaptability in varying applications. They are designed for sludge and water applications with non-clogging impellers. All pumps can be manufactured using a variety of materials and have different impellers to suit the application. In addition the company has vast range of related pumps and products that have applications in varied applications and that may be suitable for sewer applications as well.

Some large scale pumps destined for large works in South Africa

“To discuss the entire range is difficult because of the huge range that we carry locally and abroad at KSB manufacturing facilities globally. Suffice to say we have the right pump for almost every application and as a result municipalities, water authorities and engineers can call upon our expertise to assist in the refurbishment of old plants, maintenance and replacement of existing pumps, as well as the design of new pumping systems that will be capable of meeting future demands.

KSB Pumps and Valves KRT pumps installed and ready to be put into operation at a local sewage plant

layers of redundancy with standby pump and circuits available when necessary. Simultaneously there is a move to using appropriate technology in the right application that equipment is designed for application rather than simply

KSB Pumps and Valves Annett Kriel

Tel: (011) 876 5600 Email: Annett.Kriel@ksb.com Web: www.ksbpumps.co.za Pumps and Valves Africa - Q4 - 2016

17

Innovation in Detail: The New Generation of Elastomer Bellows Seals Emg1 and Emg With the latest generation of pump seals, eMG1 and eMG, EagleBurgmann has launched a further development of the million-fold proven MG1 on the market which can be used to seal, among other things, chemical pumps, water and waste water pumps, circulating pumps and submersible motor pumps in numerous industrial sectors. program now includes the new face material eSiC-Q7, a powerful silicon carbide optimized towards friction and wear with hydrodynamic properties.

The eMG is identical in construction with the eMG1, but has a 20 % shorter installation length. This provides manufacturers with new opportunities in pump construction: e.g., a more compact design due to shorter shafts with the associated material savings and increased efficiency.

The rotating unit is extremely space-saving. The computed pre-modelled bellows design and the spring assembly have no excess lengths and the outer diameter eMG: 20% shorter installation eMG1:100%: competable with MG1 of the bellows support was reduced to a length minimum. The standard stationary seat of the eMG is also the short-installation type he eMG1 is 100 % compatible with the wellG6 ring. Synthetic resin impregnated carbon graphknown MG1 standard seal. It has been innovatite) (B) and the optimized silicon carbide eSIC-Q7 are ed in detail and functionally expanded. The optithe standard materials. mized geometry of the eMG1 elastomer bellows was tested in long-term applications on EagleBurgmann test facilities and in practical use. A vastly reduced outer diameter of the bellows support now allows direct support by a retaining ring or with the use of much smaller spacer rings.

T

This provides manufacturers with new opportunities in pump construction The optimized bellows shape improves the automatic alignment of the bellows on the shaft and minimizes stick-slip effects. The characteristic innovative element is the profiled PEEK-PTFE disk which ensures consistent centering across the entire pressure operating range, exhibits outstanding sliding properties and safeguards the automatic alignment of the elastomer bellows in operation through continuous self-cleaning. The eMG1 is available in numerous material combinations. The

18

Pumps and Valves Africa - Q1 - 2016

Features of the eMG1 and eMG: • for plain shafts, unbalanced, elastomer bellows rotating, bi-directional, can be used as single and double seal.

Advantages at a glance: • 100 % compatible with MG1 (eMG1) • 20 % shorter installation length (eMG) • Smaller outer diameter of bellows support enables direct retaining ring support, or smaller spacer rings • Optimal alignment characteristic through self-cleaning of disk/shaft • Improved centering across entire pressure operating range • Special bellows design protects the shaft across the entire seal length and the seal face during assembly • Dimensional adjustments and additional stationary seat geometries possible

Operating range • Shaft diameter: d1 = 15 … 100 mm (0.59" ... 3.94") • Pressure: p1 = 16 bar (230 PSI), vacuum ...

0.5 bar (7.25 PSI), up to 1 bar (14.5 PSI) with seat locking • Temperature: t = -20 °C … +140 °C (-4 °F … +284 °F) • Sliding velocity: vg = 10 m/s (33 ft/s) • Admissible axial movement: ±2.0 mm

EagleBurgmann Tel: (011) 457-9000 www.eagleburgmann.com

Pumps and Valves Africa - Q4 - 2016

19

100% Commitment to Growth in Southern Africa Pamodzi Unique Engineering, established in 1971, has recently become a proud member of the Pamodzi Group.

T

‘Lube free’ units are a big feature, making it environmentally friendly, non-hazardous and suitable for general industry in numerous applications.

Another accomplishment is the ECO range of ‘PD’ positive displacement, helical rotor pumps, which are 100% South African manufactured to ISO 9001:2008 quality standards.

They are used for various applications such as gold mining, explosive, chemical, pulp, paper and hygienic food transfer applications.

he company will now be named as Pamodzi Unique Engineering and will draw its primary strength from its diverse engineering expertise. Locally designed, engineered and manufactured products, reaching almost every sector of industry, forms the foundation of its operations. Market areas range from mining and rail to chemical, hygienic and agricultural.

The Eco positive displacement pump replacement components were introduced to the mining and general industry in 2007. Since inception, it has proven its worth.

Established brands are Eco and Wilflo Pumps, Unique Blast Barricades and BES Pantographs, which are distributed through an extensive network of local and international distributors.

In line with the company’s local manufacture policy, it has been servicing the Southern African rail industry and open cast mines with a specialist range of pantographs for more than 25 years.

The company is renowned for its pump range and one of the mining industry’s work-horse is the DD 25 and DD 50 Wilflo double diaphragm range, which are locally designed and manufactured. The units have been successfully pumping sludge, slurry, water and sewage for more than 35 years and are easy to operate.

The local production aspect makes the BES pantograph highly cost effective, from installation and through to maintenance. All components are manufactured at Pamodzi Unique Engineering’s facility, which is ISO 9001:2008 accredited. The range comprises of railway, high speed railway and off-road pantographs.

The locally manufactured generic spares perform equally well and in some instances, better than imported products, thus bringing about enormous savings to the market.

A full complement of spares is available, thus keeping Southern Africa on track at all times.

To complete the company’s product portfolio, durable and cost effective blast barricades are manufactured from high-density natural virgin white polyethylene (HDPE), to ensure a far longer life than reground material.

The Pamodzi Group, is a black owned enterprise that supports an entrepreneurial approach. It is the Group’s responsibility to ensure that its companies comply or exceed all relevant employment, training and financial statutory requirements.

Their essence is to locally design, engineer, manufacture and supply a diverse range of branded products.

Pamodzi Unique Engineering acquired its ISO 9001:2008 accreditation in 1992 and has continued to manufacture in strict accordance with the specifications, thus achieving excellence and quality for its customer base. They would welcome enquires from established and experienced agencies in African countries.

The Eco pump range of generic replacement components used for dosing applications on the mines

20

Pumps and Valves Africa - Q1 - 2016

Pamodzi Unique Engineering, Tel: +27 (11) 826 6111, E: sales@uniqueeng.co.za Web: www.uniqueeng.co.za

New Pump Range from Metso Metso has launched its range of MDM and MDR series of hard metal Mill Discharge slurry pumps are designed from the ground up specifically for the most arduous of mill circuit applications.

T

he range further enhances the company’s world renowned offering of pumps, some of which have been around for many decades.

Metso’s double casing MDR Discharge Pump

Offering sustained performance with maximum time between mill shutdowns, each pump in the series has been developed with consistent ‘state of the art’ hydraulics, limiting inlet velocity at design BEP thus ensuring impact damage from coarse heavy solids is kept to an absolute minimum.

The large diameter high aspect ratio impellers provide for excellent hydraulic efficiency with minimum turbulence at minimum rotational speed, thereby reducing rate of wear.

The MDM range features a conventional single stage, end suction overhung centrifugal design, extra thick casing, a high efficiency solids handling impeller, adjustable suction side liner and gland side liner, whereas the MDR range has a double casing with gland side rubber liners housed in stiff cast iron outer casing halves. Both pumps are all manufactured from High Chrome iron alloy with a minimum guaranteed hardness of 650BHN. The impeller is screwed to an oversized steel pump shaft running in an oil or grease lubricated, axially adjustable taper roller bearing cartridge. An impeller release mechanism ensures safe and simple impeller removal even after long periods of operation.

Careful design provides a reduced impeller overhang restricting shaft deflection across a wide range of flows, and in so doing so maximising shaft seal and radial bearing life.

Standard options include water flushed, mechanical and the unique Metso EnviroSet TM All seals run on a renewable shaft sleeve.

A design feature is a 'double adjustment', enabling both front and back impeller clearances to be reset after components eventually wear. This adjustment is achieved by the adjustable suction side liner and the axially adjustable cartridge.

Pump connections are made with loose steel flanges drilled as required.

The shaft seal is housed in a split stuffing box and gland protected by suitable gland guard which is also split for ease of maintenance. Type of seal used is dictated by application.

Tel: 011 961 4000

Metso, Graham van der Bosch Web: www.metso.com

Pumps and Valves Africa - Q4 - 2016

21

HFT appointed Fleetguard® Super Dealer for Southern Africa

Hytec Fluid Technology (HFT) has been appointed ‘Super Dealer’ for Cummins Filtration’s range of Fleetguard® engine protection products for southern Africa, as part of a recent distribution agreement. This collaboration means that HFT, the hydraulic fluid specialists in the Hytec Group, now offers complete engine protection in addition to its total hydraulic fluid management offering across the sub-continent.

C

oinciding with this collaboration was the recent opening of Cummins Filtration’s new filtration and coolant manufacturing plant at its new regional distribution centre for Southern Africa in Woodmead, Johannesburg. The premises incorporates Cummins Filtration’s component warehousing and local manufacturing facility, which produces Fleetguard fuel and air filters, and the modern Fleetguard Organic Acid Technology (OAT) engine coolant.

“Fleetguard is ranked as the top two global brands in the international filtration market,” points out HFT General Manager Sandor Bottyan. “Cummins Filtration’s manufacturing investment in South Africa, along with their technical skills and stockholding, means our collaboration is mutually beneficial.” These benefits mean HFT can work closely with Cummins Filtration in South Africa, and Hytec’s African experience and tailored hydraulic products, including Bosch Rexroth products, add to the filtration specialist’s market penetration feasibility.”

Bottyan and Cummins’ Components Director for Africa Feroze Chowdary, refer to the synergies between the two companies. “Bosch Rexroth, as a hydraulics OEM and part

of the Hytec Group, and whose hydraulic product range for mobile equipment we support in the region, has a vested interest in delivering high-quality protection for its hydraulic systems,” says Bottyan. “Cummins is the only engine manufacturer that has invested in its own filtration manufacturing capabilities,” Chowdary adds. “Fleetguard is the only filtration and engine protection OEM in the world that belongs to a high-tech engine manufacturer. We are at the forefront of new emission-regulated diesel engine development, which depend on very high cleanliness levels.”

Both companies’ representatives cite African expansion as one of the collaboration drivers. “Africa is home to some of the fastest developing countries in the world, and therefore holds massive potential in terms of our African expansion ambitions,” says Chowdary. “This complements Hytec Group’s African expansion vision,” adds Bottyan, and Hytec Group product distribution is already active in many countries north of South Africa’s borders through Hytec Services Africa (HSA)”. HSA has comprehensive distribution and operation centres in Botswana, DRC Ghana, Kenya Mozambique, Namibia, Swaziland, Tanzania, Zambia and Zimbabwe.”

There are other similarities that demonstrate comparable ideologies. “Underpinning our collaboration with HFT,” Chowdary concludes, “are our overlapping company cultures. Cummins Filtration values integrity and investment in the local community as core overarching principles.

We are strong believers in corporate responsibility, so as well as promoting local manufacturing to create jobs locally, we also sponsor schools and promote skills transfer into the region.”

As Super Dealer for Cummins Filtration’s range of Fleetguard® engine protection products in southern Africa, HFT will market and distribute the entire Fleetguard range, including NanoNet®

22

Pumps and Valves Africa - Q1 - 2016

HFT will market and distribute the entire Fleetguard range, including NanoNet® – a recently engineered synthetic fuel filter media designed to extend engine life. “When used in one of our diesel filters on an off-road vehicle,” says Bottyan, “the particulate in the diesel is removed to meet the 12/9/6 ISO cleanliness class.” Included in the fil-

The HY-PRO diesel coalescing filter unit, an offline fuel filtration system with the ability to rapidly remove water from diesel fuel in storage and fuel tanks, forms part of HFT’s exclusive fluid maintenance equipment and decontamination services. This HY-PRO unit was showcased at numerous trade exhibitions across the southern African region during 2015

ter distribution range is Cummins newly-developed NanoForce® technology air filters. These are made using the same synthetic Nano media as NanoNet, as well as cellulose media layers for use in conjunction with NanoNet fuel filtration.

“NanoNet fuel filtration extends the life of an engine and the service intervals, without increasing the breakdown risks. A typical mining vehicle has fuel and oil filters changed every 250 hours, with the air filter changed every 500 hours. Fleetguard filters are now designed to be changed every 1 000 hours, resulting in less vehicle maintenance downtime, improving productivity,” Bottyan, points out. “In addition,” concludes Chowdary, “environmental impact from disposing of traditional coolants is greatly reduced when our OAT lifelong coolant is used. This is because it need only be changed during or after midlife rebuild, compared to other coolants which are drained every 4 000 to 6 000 hours.”

HFT is the Hytec Group Company responsible for fluid management services within the group. It is the leading hydraulic filtration solutions specialist in southern Africa, distributing an extensive product range of pressure, spin on, return and suction filters, as well as exclusive fluid maintenance equipment and decontamination services.

Hytec Fluid Technology, Sandor Bottyan Tel: +27 (0) 11 976 7300 Email: sandor.bottyan@hft.co.za Website: www.hytecgroup.co.za Pumps and Valves Africa - Q4 - 2016

23

Process Pump Delivery Contracty Sulzer has been granted an order for the delivery of an extensive process pump package to Metsä Group’s next-generation bio product mill in Äänekoski, Finland. The construction work of the mill is scheduled to be completed during the third quarter of 2017.

M

etsä Fibre, part of Metsä Group, is building a new bio product mill in Äänekoski. This investment of EUR 1.2 billion is the largest ever in the wood-processing industry in Finland. The mill’s annual pulp production will be 1.3 million tons, of which 800,000 tons will be softwood pulp and 500,000 tons hardwood pulp. Besides pulp, the mill will produce a broad range of bio products, such as tall oil, turpentine, lignin products, bioelectricity and wood fuel.

Sulzer will deliver highly efficient AHLSTAR process pumps, the latest generation of Sulzer MCE medium consistency pumps as well as agitators and vacuum pumps to the bio product mill. The equipment is designed for high reliability and energy efficiency as well as for low operating costs.

The contract includes the manufacturing, testing, packaging, and installation inspection of the equipment.

Energy efficiency and low emissions were the central design criteria for the green field bio product mill. Sulzer has substantial expertise in providing energy-efficient solutions and also systematically aims to reduce its own environmental footprint.

The ability to offer complete, reliable, and high-efficient solutions for overall pumping and mixing needs makes Sulzer a key full-line supplier for the pulp and paper industry, including wastewater applications.

Sulzer Pumps Finland Oy, Tel: +358 10 234 3189 jukka.vanhala@sulzer.com, www.sulzer.com 24

Pumps and Valves Africa - Q1 - 2016

New mill discharge pump range!

Why do you need it?

– because the new Metso series of Mill Discharge slurry pumps encompass all the experience coupled with an understanding of today’s market needs and demands for improved sustained performance and lower cost. Specifically designed from its inception for mill circuit applications, the MDM hard metal and MDR rubber lined double adjusted slurry pumps offer sustained performance with maximum time between mill shutdowns.

Get in touch, and find out how we can help!

Metso is a leading process performance provider, with customers in the mining, oil and gas, and aggregates industries. Discover more at www.metso.com/pumps.

BEE Ownership Compliant metso.com – email: mmsa.info.za@metso.com

QR code for smartphones

Pumps and Valves Africa - Q4 - 2016

25

APE pumps Pumps at the heart of Africa Mining

Waste Water processing

Power Generation

Petrochemicals

The 750mm / 30�

Dual Valve (DFV)

T

hese valves were manufactures in our factory in Benoni, South Africa. These valve took approximately 15 Weeks to manufacture from the start to the end.

These valves will be used for a slurry application on Capstone (Pinto Valley Copper mine) in America.

Manufacturers of: Vertical industrial turbine pumps Multi-stage high pressure pumps Split casing pumps End suction pumps Vertical sump pumps API 610 pumps

The steps leading up till the day of upliftment had to be precise from the organizing of the 40 ft open top container, due to the size of the valves – down to the expected time of arrival at the Durban Harbor (South Africa) and everything in between.

On the day of upliftment there was a sense of excitement traveling through the factory and for all involved with this project. We stood with proud as our near to perfect valves where being lifted into the container. The long haul, the precision and accurate details to the valves and the workmanship all coming together as one, as we bid farewell to the valves.

The Valve Specs: Fabricated Carbon Steel Body Rubber Lined Urethane Ball 26 Nagington Road, Wadeville Germiston 1400, South Africa Tel +27 11 824 4810 | Fax +27 11 824 2770 PO Box 14733, Wadeville 1422, South Africa Email: apepumps@mweb.co.za Website: www.apepumps.co.za

Roc- Tuff Seat Pressure Rating: 310 PSI Flanged & Drilled: ANSI300 The container will be at sea for 6 more Weeks before reaching its destination in the USA and hopefully reach the client before year end.

Duel Valves, Tel: +27 11 422 4326/7 Email: sales@dualvalves.com Web: www.dualvalves.com APE 267x90 ad.indd 1

26

Pumps and Valves Africa - Q1 - 2016

2015/12/02 10:28 AM

Premier Valves Adds Metal Seated Butterfly Valves to its Range Premier have over the years had some involvement with Triple Eccentric Metal Seated Butterfly valves and manufactured a range under license some years ago, but because of the popularity of its range of Boving and other Butterfly valves which have been market leaders in the Water Industry for over 30 years, the need did not exist to pursue this range of valves.

Because the Water industry has become interested in Metal Seated Butterfly valves in recent years and also because Premier Valves have entered other markets such as the Petrochemical industry where this type of valve has been popular for many years, a high quality range of Metal Seated Butterfly valves have been acquired. The Titan Triple Eccentric Metal Seated Butterfly valve is of the highest quality and has all the approvals necessary to be used in the demanding Petroleum industry.

Available in sizes up to 2000mm and pressure ratings up to 150bar and temperatures up to 7000 C the Titan can be used to replace many traditional valves such as Gate, Globe and Ball valves and perform the functions better with longer life expectancy. The Titan Butterfly valve is truly a valve for all seasons!

Because of the special machining required to achieve the right angles and tolerances on the seats of a Triple Eccentric Butterfly valve, general importers of this type of valve have to send the valve back to the factory for repair. Because of its extensive in-house capability and co-operation agreements with other facilities in South Africa, Premier offers a comprehensive repair and back-up service with a fast “turn-around” time for repair of these valves during plant shutdowns. Even though the life expectancy of the Titan Butterfly valve is longer than traditional valves, it is still a comfort to the client to know that full back-up is available when required.

The Triple Eccentric Metal Seated Butterfly valve has been used extensively in High Pressure Mine applications such as Pump Control Valve on 100bar Dewatering Pumps. Whereas traditional valves last for a few years in this arduous application, these valves have an impressive life span of over 10 years service before reconditioning is required. With the benefits of compactness, ease of operation and “bubble tight” shut-off, the Titan Butterfly valve is set to become a major player in the South African Valve industry.

Premier Valves, Tel: +27(011) 908-3760 Fax: +27(011) 908-1268 www.premiervalves.com

Advertise in Pumps And Valves Africa Magazine Contact Helen on Tel: (011) 047-2400 Email; info@pumpsandvalves.co.za www.pumpsandvalves.co.za

Pumps and Valves Africa - Q4 - 2016

27

Viable Solution To Replace Bucket System In Rural Areas A pumping system designed to separate solids and pump waste water over longer distances holds the key to providing acceptable sanitation to rural villages and sparsely inhabited areas where until recently the bucket system and pit latrines were the only alternative.

D

esigned and developed by KSB Pumps and Valves, the Ama DS allows treatment of waste water to be undertaken further from treatment plants and makes it viable to collect waste water from larger collection areas for treatment at centralised plants.

According to Hendrik Enslin, KSB waste water projects and applications manager, the Ama DS system enables wider and more cost effective collection of waste water and paves the way for the development of sanitation systems in rural areas or areas where sanitation was not deemed possible due to unsuitable geographical location or where gravitational systems were not possible.

Large area coverage “The genius of the system is the ability to immediately remove solids from the system and separate it from the water.

This enables pumps with smaller free passages to be used and as a result allows the system to pump the water over much longer distances than previously possible.

shared by many different communities in a region. We are hoping that this will play a significant role in bringing sanitation to all parts of the country,” says Hendrik.

Technological solution In typical KSB fashion the company has used technology to overcome an age-old problem and provide configurable solutions that can be tailor-made to suit applications. Using smart level meters and trending technology the entire system can be managed to ensure the system is able to cope with varying demands throughout daily,

“In addition, with the solids removed, there is nothing to impede or block the impellers etc and this allows for a far more reliable system and cleaner more hygienic pumps for ease of serviceability. Once solids build-up to a pre-determined level some of the processed waste water is then used to bypass the pumps and flush the solids to the treatment plant.

The genius of the system is the ability to immediately remove solids from the system and separate it from the water

Ama DS pumping system developed to separate solids and pump liquids over longer distances

“This effectively frees municipalities or communities to pump waste to more distant treatment plants or to establish centralised plants that can be

We are Bringing out a Buyers Guide in our next issue to Advertise in it Contact Jackie on Tel: +27 11 047-2400 Email: adverts@liftingafrica.co.za 28

Pumps and Valves Africa - Q1 - 2016

transport, drainage of hotels, hospitals, campgrounds, low density housing projects etc. Systems are available to handle anything from 6-200 cubic metres per hour.

Besides the obvious benefit of providing sanitation in far flung and rural areas, the system also provides a solution that is more efficient than traditional pumping systems, is more reliable as a result of solids being removed before entering the pumps, less downtime as a result of less wear and blockages, cleaner and safer operation and less maintenance.

How it works Hendrik explains that the patented sol-

Using smart level meters and trending technology the entire system can be managed to ensure the system is able to cope with varying demands throughout daily, weekly and even seasonal fluctuations ids separation system removes solids and temporarily stores it in separators.

Only pre-treated waste water not containing coarse solids flows through the pumps. The pre-treated waste water is pumped through the solids separators in the opposite direction and carries the solids out of the separators and into the discharge line. Through this process the solids separators and pumps are cleaned and ready for the next inflow phase.

A typical rural collection system

weekly and even seasonal fluctuations.

Both water and solids levels are constantly monitored and purged as and when required. Inflow and outlet pumps are only operational when required and as a result the system uses less energy which is an important consideration in farflung areas. In addition, the Ama DS system is also well suited for applications in municipal and industrial waste water

“During the design stages our experts also paid great attention to maximising operating reliability in order to keep future maintenance to a minimum, thus reducing the overall costs. Necessary servicing work can also be carried out while the equipment is in operation and service personnel work in hygienic working conditions. Maintenance to the externally installed solids separators can be conducted very easily, quickly and without shutting down the system.

KSB Pumps and Valves, Annett Kriel Tel: (011) 876 5600, Email: Annett.Kriel@ksb.com Web: www.ksbpumps.co.za Pumps and Valves Africa - Q4 - 2016

29

Enough Power for Mars Lander’ NASA Tests First 3D-printed Space Engine These tests allowed scientists to dismiss doubts concerning the possible higher delicacy of 3D-printed parts in comparison with traditionally manufactured space engine elements that could prevent them from being used in real rocket launches.

“These NASA tests drive down the costs and risks associated with using additive manufacturing, which is a relatively new process for making aerospace quality parts,” said Robertson.

Nick Case, the testing lead of the project, also commented on the issue: “What matters is that the parts work the same way as they do in a conventional engine and perform under the extreme temperatures and pressures found inside a rocket engine. The turbo pump got its ‘heartbeat’ racing at more than 90,000 revolutions per minute (rpm) and Liquid oxygen/gaseous hydrogen rocket injector assembly built using additive manufacturing the end result is the flame you see coming out of technology is hot-fire tested at NASA Glenn Research Center’s Rocket Combustion the thrust chamber to produce over 20,000 pounds Laboratory in Cleveland of thrust, and an engine like this could produce enough power for an upper stage of a rocket or a Mars lander.”

T

he 3D-printed engine parts, all combined in a real space propulsion system, generated 20,000 pounds of thrust when they were test-fired with cryogenic liquid hydrogen and oxygen by a team from NASA’s Marshall Space Flight Centre in Huntsville, Alabama.

“We manufactured and then tested about 75 percent of the parts needed to build a 3-D printed rocket engine,” Elizabeth Robertson, the project manager for the additively manufactured demonstrator engine at the Marshall Space Flight Center, said in a NASA press release.

NASA has been working on the 3D-printed engine project for more than three years in cooperation with various companies, and had already conducted separate tests for some of the 3D-printed parts in 2014.

The engine components are built by a 3D printer by layering metal powder and fusing it together in a process of ‘selective laser melting.’

By testing the turbo pumps, injectors and valves together, we’ve shown that it would be possible to build a 3-D printed engine for multiple purposes such as landers, in-space propulsion or rocket engine upper stages “By testing the turbo pumps, injectors and valves together, we’ve shown that it would be possible to build a 3-D printed engine for multiple purposes such as landers, in-space propulsion or rocket engine upper stages,” she added.

Seven tests were conducted by NASA specialists, with the longest lasting 10 seconds. During the experiments the engine experienced both extreme heat, as fuel was burned in the propulsion system at a temperature of more than 3,315C (5,999F), and extreme cold, with its turbo pump delivering liquid hydrogen cooled below -240C (-400F).

30

Pumps and Valves Africa - Q1 - 2016

The 3D-printing process allowed the scientists to build more complex pieces of the engine which would usually consist of several separate parts. As a result, the engine’s turbo pump had 45 percent fewer parts than its traditional analogues; the injector had over 200 fewer parts than a traditionally manufactured version and contained features that became possible only with 3D-printing.

Additionally, the parts such as valves that usually take more than a year to produce were created in a few months.

NASA’s future plans include adding new 3D-printed components to the engine such as a cooled combustion chamber, a nozzle and a turbo pump for liquid oxygen as well as conducting tests with liquid oxygen and methane, as these substances could potentially be produced on Mars and become key propellants for the Martian landers.

NASA, www.nasa.gov

Pumps and Valves Africa - Q4 - 2016

31

Efficient Engineering’s Diversified Strategy Delivers Solid Value At its open day, Efficient Engineering’s Managing Director, Graham Hartley, said that withstanding plunging commodity prices and resulting slowing demand, the company continues to be part of the solution within the steel industry which plays a critical role in mineral beneficiation and is a key enabler of every part of the economy. The top five steel consuming industries include the automotive, mining, construction, energy, and infrastructure sectors and jointly contribute 15 percent of the total of South Africa’s GDP and employ more than 8 million people.

“We offer first to market, tailor made solutions to our clients through the expertise of our management team which has more than 200 years’ cumulative experience, in harnessing contemporary machinery and industry leading manufacturing processes.

T

hrough developing their own intellectual property in the areas of custom engineering mining solutions, pressure vessels and modular solutions, Efficient Engineering continues to diversify its business even further.

The company has gone from purely mechanical design and manufacture, to including electrical design, and full fit out and testing of modular power control, electro houses and generator sets.

Efficient Power, which was launched 18 months ago, has since turned over more than R100 million.

32

Pumps and Valves Africa - Q1 - 2016

“This has led to our robust growth and has seen us evolve from a respected family business to becoming the preferred supplier for numerous blue chip original equipment manufacturers in the local and international mining, material handling, oil and gas, satellite communication and radio astronomy, petrochemical as well as engineering industries. Further, we continue to add to our diverse portfolio through acquisitions such as that of Trotech, a division recently gained through the business rescue process.”

Trotech, now known as Efficient Trotech, offers specialist services in the field of engineering, design, manufacture and installation of bulk storage tanks, pressure vessels, heat exchangers, reactors, air receivers and fired heaters to the petrochemical, mining and minerals industry, as well as to the pulp and paper sectors. It is an exciting addition to Efficient Engineering’s site which currently boasts a total manufacturing surface area of 21,600m2, fully equipped to undertake any engineering job, regardless of its size or complexity.

At Efficient Engineering, equipment is fabricated to world class standards by a hand-picked team of production staff, many of whom are highly skilled artisans and metalworkers. This is essential to maintaining the requirements that allow the company to retain its ISO 9001:2008 certification year after year. The company is also ISO 3834 certified as well as OHSAS 1801:2007 compliant.

A benchmark audit conducted by the United

A Survival Guide in Times of A Water Crisis Nations Industrial Development Organisation’s (UNIDO) Subcontracting Partnership Exchange (SPX) programme resulted in an outstanding outcome. Under the category of Overall Performance and Practices Matrix, Efficient Engineering was placed in the “World Class” quadrant, along with only a few other international group companies operating in the same league.

Also, the prestigious SAISC Steel Awards recognised Efficient Engineering, its partners and client as Overall Winners this year for their work on the SKA Africa Radio Antenna Positioner project. The judges said that this project ‘radiates excellence not only in the use of structural steel but in every aspect of its structure and purpose.’

“This is testament to our commitment to being a partner of choice to our clients as well as good corporate citizens by contributing towards the growth of the economy through world class solutions that benchmark South Africa as the global industry standard,” concludes Hartley.

Efficient Engineering Graham Hartley Tel: (011) 928-4800 www.efficient.co.za

The South African agricultural industry, amongst many others worldwide, are in a state of panic. The recent draughts experienced in South Africa have been a scary reminder of just how dependent we are on our agricultural resources, and also highlighted how tremendously vulnerable these resources can be. Water shortages not only within South Africa, but on the continent at large have caused major detrimental economic knock-on effects and this eventually impacts every citizen directly. One could blame it on bad resource Governance, inefficient infrastructures, Global warming, etc. The truth remains that at the end of the day, you have to ensure that your farming business survives, and that is only possible with one liquid gold – WATER. The recent draughts have had a harsh effect on our farmers, and they are in desperate need of securing better backup facilities for the future.

How are you optimizing on your water supply?

If you have a limited water supply, you need to optimize your usage.

Getting through a drought is a combination of having enough water stored and utilizing your water supply in the most efficient and sparing way possible. Ensure that your irrigation system is not over-designed and that you are not overusing your water. Without a continuous water source, you need to consider storage. When planning your storage, ensure that you optimize its purpose. This may be to enlarge the storage volume, and where possible cover it to avoid excess evaporation. Eradicating leakages is vital, as large volumes of water are lost over time. Once you have storage, optimize and extend the time of your water availability.

We at Elsumo, supply energy efficient water-supply equipment, combined with over 100 years of expertise. With our technical advice and guidance, you’ll soon be headed in the right direction of making the most of your valuable resource, and survive it through the worst of times.

“Reduction in energy consumption does not require us to spend more money, it requires a change in our perception on how we live with and use power” B.Geiger, Elsumo.

For any questions and/or advice on implementing a reliable and sustainable water system, please visit our website at www.elsumo.co or call us at one of our branches (Cpt) 021 875 5781 (Jhb) 021 452 4981

Pumps and Valves Africa - Q4 - 2016

33

Tectra Automation Gains Entry To Oil & Gas Valve Process Market Tectra Automation entered into a sole distribution agreement with Italy-based process valve and actuator manufacturer OMAL® Automation. In terms of the agreement, Tectra Automation stocks and distributes OMAL’s entire range of oil & gas industry-certified valves and actuators throughout South Africa and sub-Saharan Africa.

T

he agreement gives Tectra Automation a foothold in the sub-Saharan Africa process market, and facilitates the expansion of the company’s Pneumatics Division. Essentially, in addition to its pneumatic and vacuum products, technology and solutions, the division adds process market products as a third leg to its offering. It also puts the company in a position to bring customers from the oil & gas industry into the fold.

“We have had our growth strategy in place for some time now,” explains Malan Bosman, Product Manager, Pneumatics, Tectra Automation. “When OMAL began the process of withdrawing its South African office from the country, we took the opportunity to enter into an agreement with the Italian head office. Their product range quality is in-line with Tectra Automation’s quality offering, and the addition of this range enhances our overall solution offering.”

The process industry valves and actuators, now a part of the Tectra Automation’s process market products, comprise pneumatic scotch yoke actuators, electrical actuators, co-axial valves, angle seat valves, butterfly valves and ball valves.

“It is a win-win agreement for both parties,” he Bosman points out. “OMAL will benefit from Hytec’s South African

Shake on it! Pictured at the conclusion of the agreement with OMAL® in Italy are OMAL S.p.A Sales Director Piergiorgio Cittadini (left) and Tecra Automation’s Pneumatic Product Manager Malan Bosman

and sub-Saharan African footprint, as well the Group’s established African distribution channels.” While there are smaller established OMAL distributors in the country, Tectra Automation’s appointment as sole distributor for the region means each of them will now source their OMAL products from Tectra Automation. As Tectra Automation now holds comprehensive stock of all OMAL valves and actuators, the smaller distributors will benefit from fast order turn-around times.

Bosman and former OMAL South Africa sales representative Marno Gloy, who has taken up a similar position with Tectra Automation, underwent a week’s product training at OMAL offices in Italy. “The transition has been seamless,” Bosman concludes, “and for the smaller distributors and established South African and African OMAL customers there was no lapse in service or stock delivery.”

OMAL Automation is one of four OEMs internationally that have certification to manufacture valves and actuators for the oil & gas industry.

Effective 1 November 2015, Tectra Automation stocks and distributes OMAL’s entire range of oil & gas industry-certified valves and actuators throughout South Africa and sub-Saharan Africa. Pictured, a sample of OMAL process valves

34

Pumps and Valves Africa - Q1 - 2016

Tectra Automation, Malan Bosman Tel: 011 974 9400, Malan.Bosman@tectra.co.za www.hytecgroup.co.za

VALVE GUIDE Air Valves Air valves in pipeline systems serve two primary functions. The first is the release of accumulated air that comes out of solution within a pressurized pipeline.

This air will result in bubble formation, which will gather at localized high points along the pipeline profile.

This air accumulation will occur when the bubble’s buoyancy is greater than the energy to convey the bubble with the liquid. The air valve used to release this free air is known as an air release valve.

(Vacuum release valve) Pressure Type

Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

50 -300 mm

PN10 - PN25

70%

High Pressure

50 -300 mm

PN10 - PN40

70%

Ball Valves A ball valve is a form of quarter-turn valve which uses a hollow, perforated and pivoting ball (called a “floating ball”) to control flow through it. It is open when the ball’s hole is in line with the flow and closed when it is pivoted 90-degrees by the valve handle. The handle lies flat in alignment with the flow when open, and is perpendicular to it when closed, making for easy visual confirmation of the valve’s status.

(Spherical Valves, Rotary Valves) Pressure Type

Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

20mm - 300 mm

PN10 - PN25

70%

High Pressure

20mm - 600 mm

Class 150 - 4500 Matric PN25 - PN 450

70%

Pumps and Valves Africa - Q4 - 2016

35

VALVE GUIDE Butterfly Valves

Rotating Disk Valves, rotary Control Valve, Quarter Turn Gate Valve)

A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of a ball valve, which allows for quick shut off. Butterfly valves are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. The disc is positioned in the center of the pipe; passing through the disc is a rod connected to an actuator on the outside of the valve.

Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, so apressure drop is always induced in the flow, regardless of valve position

Pressure Type

Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

80mm - 3500 mm

PN6 - PN25

70%

High Pressure

80mm - 2500 mm

Class 150 - 1500 Matric PN25 - PN 250

70%

36

Pumps and Valves Africa - Q1 - 2016

VALVE GUIDE Check Valves A check valve, is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction.

Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Check valves are often part of common household items.

Although they are available in a wide range of sizes and costs, check valves generally are very small, simple, or inexpensive. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem.

(Non-Return Valve, reflux Valve, Tilting The bodies (external shells) of most check valves are Disk Valve, Double Door, Mu.ti Door, Swing made of plastic or metal.

Check)

Pressure Type

Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

80mm - 3500 mm

PN6 - PN25

70%

High Pressure

80mm - 2500 mm

Class 150 - 1500 Matric PN25 - PN 250

70%

Control Valves Control valves are valves used to control conditions such as flow, pressure, temperature, and liquid level by fully or partially opening or closing in response to signals received from controllers that compare a “setpoint” to a “process variable” whose value is provided by sensors that monitor changes in such conditions.

Control Valve is also termed as the Final Control Element.

(Globe Control Valve, Piston Type Control Valve) Pressure Type Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

25 - 600 mm

PN10 - PN25

70%

High Pressure

25 - 600 mm

Class 150 - 4500 Matric PN25 - PN750

70%

Pumps and Valves Africa - Q4 - 2016

37

VALVE GUIDE Diaphragm Valves Diaphragm valves (or membrane valves) consists of a valve body with two or more ports, a diaphragm, and a “weir or saddle” or seat upon which the diaphragm closes the valve. The valve is constructed from either plastic or metal.

(Slurry Valve or Saunders Valve) Pressure Type

Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

15mm - 1800 mm

PN6 - PN25

70%

70

YEARS

44 Harry Str., Robertsham, Johannesburg, South Africa P.O. Box 1122, Southdale, 2135 Tel. (011) 433 3968 Fax (011) 433 3623 UVC Fax (011) 433 9107 Website: www.uvc.co.za e-mail: 44 Harrysales@uvc.co.za Str., Robertsham, Johannesburg, South Africa

YEARS

P.O. Box 1122, Southdale, 2135 Tel. (011) 433 3968 Fax (011) 433 3623 UVC Fax (011) 433 9107 Website: www.uvc.co.za e-mail: sales@uvc.co.za

38

Pumps and Valves Africa - Q1 - 2016

VALVE GUIDE Fire Hydrants A fire hydrant is a connection point by which firefighters can tap into a water supply. It is a component of active fire protection.

(Underground) Fire deluge Valve Pressure Type Size Low Pressure

65 mm inlet

Pressure Rating (or imperial Equivalent)

% Local Content per unit

PN16

70%

Gate Valves A gate valve, also known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar, so gate valves are often used when a straightline flow of fluid and minimum restriction is desired.

The gate faces can form a wedge shape or they can be parallel.

(RSVs, Wedge Gates, Slice Valves, Parallel Slides, Penstocks, Bonnet Gates, Scour Valves) Pressure Type Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

15mm - 1800 mm

PN6 - PN25

70%

High Pressure

80mm - 1800 mm

Matric PN25 - PN 100

70%

Pumps and Valves Africa - Q4 - 2016

39

VALVE GUIDE Knife Gate Valves Knife gate valves were originally designed for the pulp and paper industry. Stringy pulp would impinge between the wedge and seat of a normal gate valve and prevent flow shut-off

(Spherical Valves, Rotary Valves) Pressure Type

Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

40mm - 1200 mm

PN10 - PN16

70%

KNIFE GATE VALVE DUAL‘s Knife Gate Valve is built with a cast SG Iron GR. 42 or fabricated body and features a heavy-duty stainless steel blade.

Removable sleeves on either side of the blade provide a bi-directional bubble tight seal, with no metal parts in contact with the Dual’s Knife Gate Valves.

WE MANUFACTURE THE FOLLOWING KNIFE GATE VALVES Tel : +27 11 422 4326/7 Fax: +27 11 421-7842 Email: sales@dualvalves.com Web: www.dualvalves.com

Urethane Lined Slurry Knife Gate Valve (DULSKG) Wafer Slurry Knife Gate Valve (DWSKG) Slurry Knife Gate Valve (DSKG) Dual High Pressure Slurry Knife Gate Valve (DHPSKG)

Untitled-2.indd 2

40

Pumps and Valves Africa - Q1 - 2016

4/11/2016 1:16:22 PM

VALVE GUIDE Manual Actuator Manual handwheel actuators are used in applications that require a throttling type of control valve that can be manually operated and set. Capable of giving precise manual throttling control, these actuators can be used on nearly all standard globe-style or angle-style valve body assemblies. A travel indicator on the actuator yoke can provide a visual indication of valve plug position.

(Gearboxes) Pressure Type

Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

-200 000nm torque

N/A

70%

Plug Valves Plug valves are valves with cylindrical or conically tapered “plugs� which can be rotated inside the valve body to control flow through the valve. The plugs in plug valves have one or more hollow passageways going sideways through the plug, so that fluid can flow through the plug when the valve is open. Plug valves are simple and often economical.

(Excluding expanding plug valves) ( Double Block & Bleed Valve) Pressure Type

Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

20-600mm

PN10 - PN 26

70%

High Pressure

20-600mm

pn25 - PN100

70%

Pumps and Valves Africa - Q4 - 2016

41

VALVE GUIDE Pinch Valves Pinch valves are suitable for handling slurries and solids in suspension, avoiding contact with the valve mechanism and any contamination towards or from the environment.

(Slurry Valve) Pressure Type Size Low Pressure

50 - 800 mm

Pressure Rating (or imperial Equivalent)

% Local Content per unit

PN10 - PN40

70%

DUAL‘s Pinch Valve DUAL‘s Pinch Valve consists of a tough, but flexible full bore sleeve, which forms part of the pipeline. The valve is closed mechanically via movement of the Pinch Bars located on opposite sides of the sleeve. The core of the Dual Pinch Valve is the sleeve — this sleeve is reinforced with high-strength fabric.

The valves are well suited for on/off and throttling control applications where scale build up is a problem.

We manufacture three types – Dual Straight Through Pinch Valve (DSTPV), Dual Pinch Valve Enclosed (DPVE), then the Dual Pinch Valve Open (DPVO).

Tel : +27 11 422 4326/7 Fax: +27 11 421-7842 Email: sales@dualvalves.com Web: www.dualvalves.com Untitled-2.indd 1

42

Pumps and Valves Africa - Q1 - 2016

4/11/2016 1:24:15 PM

VALVE GUIDE Pneumatic Actuators - Double acting Pneumatic actuators utilize compressed air to generate the operating energy. These actuators are quick to respond, but are not ideal for environments under high pressures, as gas is compressible. Pneumatic actuators can be either spring return or double acting.

(Vein type, Linear Type, Scotch Yolk Type, Rotary Type, Double Crank Type, Rack & Pinion Type)

Double Acting – Actuators in a double acting configuration have air/liquid supplied to both sides of the piston, with one side being higher pressure which achieves the movement required to actuate the valve. This configuration uses the air/liquid as energy to both open and close the valve.

Pressure Type

Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

-392 000nm torque

N/A

70%

Pneumatic Actuators - Spring return Pneumatic actuators utilize compressed air to generate the operating energy. These actuators are quick to respond, but are not ideal for environments under high pressures, as gas is compressible. Pneumatic actuators can be either spring return or double acting.

(Vein type, Linear Type, Scotch Yolk Type, Rotary Type, Double Crank Type, Rack & Pinion Type)

Spring Return – Actuators in a spring return configuration have air/liquid supplied to only one side of the piston, and the energy to move the mechanisms comes from a spring on the opposite side. This configuration uses the air/liquid as energy to open or close the valve, while the spring acts to affect the opposite motion.

Pressure Type

Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

- 215 000nm torque

N/A

70%

Pumps and Valves Africa - Q4 - 2016

43

VALVE GUIDE Pressure Reducing Valve (PRV) Pressure Regulating Valve (PRV) automatically reduces a higher inlet pressure to a steady lower downstream pressure, regardless of changing flow rate and/or varying inlet pressure. PRVs are installed in water distribution systems throughout the world and are know for their superior performance, reliability and long service life.

(Self-Regualting Valve)

Pressure Type

Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

Full Range

Full Range

70%

OPTIMISED FOR ENERGY EFFICIENT PUMPING General advert Pump and Valves 15.indd 1

44

Pumps and Valves Africa - Q1 - 2016

GRUNDFOS (Pty) LTD 16 Lascelles Road Meadowbrook Ext 13.

Germiston 1609 Phone: (+27) 10 248 6000 www.grundfos.co.za 2015-12-03 04:25:12 PM

VALVE GUIDE Safety Valve A safety valve is a valve which has the function of increasing the safety of a thermal-hydraulics plant. An example of safety valve could be a pressure safety valve (PSV), i.e. a pressure relief valve (PRV) which automatically releases a substance from aboiler, pressure vessel, or other system, when the pressure or temperature exceeds preset limits. Also pilot-operated relief valves could have the function of safety valves.

(Pressure Valve or Vacuum Valve)

Pressure Type

Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

15mm - 32 mm

PN16

70%

Sleeve Valve The sleeve valve is a type of valve mechanism for piston engines, distinct from the usual poppet valve. Sleeve valve engines saw use in a number of pre-World War II luxury cars and in the United States in the Willys-Knight car and light truck. They subsequently fell from use due to advances in poppet-valve technology, including sodium cooling, and the Knight system double sleeve engine’s tendency to burn a lot of lubricating oil or to seize due to lack of it.

(Fixed Cone Valves, Discharge Valves, Scour Valves, Howell Bunger Valves, Energy Dissipating Valves)

Pressure Type

Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

Full Range

PN10 - PN25

70%

Pumps and Valves Africa - Q4 - 2016

45

VALVE GUIDE Taps, Cocks Taps are normally connected to the water supply by means of a “swivel tap connector”, which is attached to the end of the water pipe using a soldered or compression fitting, and has a large nut to screw onto the threaded “tail” of the tap, which hangs down underneath the bath, basin or sink. A fibre washer (which expands when wet, aiding the seal) is used between the connector and the tap tail. Tap tails are normally 1/2” in diameter for sinks and 3/4” for baths, although continental Europe sometimes uses a 3/8” (still imperial) size. The same connection method is used for a ballcock.

(Spherical Valves, Rotary Valves)

The term tap is widely used to describe the valve used to dispense draft beer from a keg, whether gravity feed or pressurized.

Pressure Type

Size

Pressure Rating (or imperial Equivalent)

% Local Content per unit

Low Pressure

Full Range

N/A

70%

Since 1989 Gunric Valves Manufacturing (Pty) Ltd, has been at the forefront of triple eccentric butterfly valve design. Our high quality valves are effectively used in the water, oil, process, mining, power generation, petrochemical, gas, sugar and steel refinery industries worldwide.

Engineered for strength and durability, Gunric Valves endure arduous conditions and operate under extreme pressures and temperatures.

Practical Expertise | Cutting Edge Technology | Service Excellence Tel: +27 (0) 11 474 6180/4

www.gunric.com

Untitled-1 1

46

Pumps and Valves Africa - Q1 - 2016

sales@gunric.co.za 2016/03/17 1:20 PM

World-class pumping system solutions Franklin Electric is the leading manufacturer of world-class pumping system solutions providing the highest quality, availability, service, innovation and value-for-money in the industry. Backed by unsurpassed expertise throughout Africa, these leading brands are ideal for various pumping applications.

13 Engwena Road, Sebenza, Edenvale, 1610, South Africa Tel: +27 11 723-6500 info@franklin-electric.co.za www.franklin-electric.com Branches: Bloemfontein: +27 51 434-1565, Cape Town: +27 21 949-5458, Durban: +27 31 700-4160 Depot: Port Elizabeth: +27 41 487-2866, Export Division: +27 11 723-6500 Franklin Electric Botswana (Pty) Ltd: +267 397-4926 Franklin Electric Zambia: +260-966-014-144, +260-966-303-019 Pumps and Valves Africa - Q4 - 2016

47

48

Pumps and Valves Africa - Q1 - 2016