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Safety Shut-Off Valve RMG 711/S2 DN25 to DN100

General Description

711.02 edition 07/2004

Serving the Gas Industry - WORLDWIDE

Safety Shut-Off Valve RMG 711/S2 DN25 to DN100 Application • safety device for gas pressure regulating stations • suitable for gases according to G 260 and all non-corrosive gaseous media

Characteristics • easy maintenance, easy replacement of internal parts without dismantling the main valve from the line • integrated safety by-pass valve for pressure compensation with automatic resetting into service position • low pressure drop due to in-line flow • four tripping possibilities; manual release as a standard feature • electro-magnetic release and electric remote indication of valve position as special features • high response accuracy and short response time • same face-to-face dimensions as safety shut-off valve RMG 710 and RMG 711

1. Technical data maximum service pressure pmax

100 bar (depending on flange rating)

sizes

DN 25, DN 50, DN 80, DN 100

connections

flanges according to DIN PN 25 and PN 40, and ANSI 300, ANSI 600

valve seat diameter

equal to pipe size diameter

materials

main valve body switching device measuring unit internal parts diaphragms, o-rings closing spring

temperature range class 2

-20°C to +60°C

response time

0,1 ... 0,3 s (depending on service pressure, valve size and control unit)

function and strength

according to DIN EN 14382 (DIN 3381)

CE-sign according to PED

2

cast steel, steel cast aluminium aluminium forged alloy aluminium, stainless steel, brass, steel rubber-like plastic material (NBR) stainless steel

Safety Shut-Off Valve RMG 711/S2 DN25 to DN100 Adjustable ranges overpressure release re-engagement specific differential setting between response range wire pressure and dia.Ø Wao (bar) service pressure mm ∆p (bar)

actuator element

setpoint spring

Nr . colour

2 3 4

grey brown red

5.0 6.3 7.0

K 17

2 3 4

grey brown red

5.0 6.3 7.0

K 18

1

9.0

K 19

1

9.0

K 16

2 … 10 5 … 20 10 … 40

20 ... 90

25 50 80 100

response precision category

AG

1 1 1

0.4 0.8 1.2 4 ... 10 5 ... 20 10 ... 40

0.4 0.8 1.2

5 5 5 1

1,5 20 ... 90

weights size DN

underpressure release re-engagement specific differential setting between response range pressure and Wau (bar) service pressure ∆p (bar)

1.5

1

connections weight kg

measuring line bleed/vent line

E 12 E 12

20 26 56 85

3

Safety Shut-Off Valve RMG 711/S2 DN25 to DN100 2. Design and operation The safety shut-off valve (SSV) RMG 711 consists of a one-piece main valve body, a switching device, a control element and a pressure compensating valve.

The angle-joint valve flap with o-ring sealing gives tight shut-off in the position "closed" with corrosion-resistant spiral springs exerting the closing force. After pressure balance has been established manually the pressure compensating valve is automatically forced back into the position "closed".

A release mechanism is integrated in the switching device. When the pressure to be monitored reaches the pre-set response point or when the manual release lever is pulled, the switching mechanism is released and the valve closes. The valve can be re-opened by turning the valve flap shaft by a handlebar. The switching mechanism automatically adjusts itself into open position.

After re-engagement of the valve the handlebar is automatically pressed out of its retaining hole by the force of an ejecting spring.

This safety shut-off valve is particularly easy to maintain: - after unscrewing the spring casing the valve flap can be swivelled out of the main valve body.

- external functional parts are perfectly identical for the sizes DN 25, DN 50, DN 80, and DN 100.

4

Safety Shut-Off Valve RMG 711/S2 DN25 to DN100 Main valve cover

valve body valve flap lever

valve flap pressure compensating valve

operating lever

handlebar

indication closing springs (flat spiral spring) spring housing

valve flap shaft

proximity sensor switching mechanism

switching stem control element manual release lever

5

Safety Shut-Off Valve RMG 711/S2 DN25 to DN100 operation with control element K 16, K 17, K 18, K 19 The pressure to be monitored (service pressure) at the double diaphragm system has to be compared with a setpoint value (response pressure setpoint) which is determined by the setpoint spring. When the upper response pressure is reached, the overpressure at the control element K16 or K 18 causes the amplifying valve to open.

When the lower response pressure is reached, the underpressure at the control element K 17 or K 19 equally causes the amplifying valve to open. In both cases gas flows from the monitoring system to the pressure converter.

The pressure increase moves the switching stem, which releases the switching mechanism. The valve flap shaft is set free to turn, and the actuator springs shut the SSV.

control element (K 16 for upper setting range) valve flap shaft switching mechanism switching stem pressure converter breathing/discharge line

setpoint spring setpoint adjuster amplifying valve measuring line

double diaphragm system

outlet pressure atmosphere

6

Safety Shut-Off Valve RMG 711/S2 DN25 to DN100 operation with magnetic valve The pressure to be monitored prevails in front of the magnetic switch. Depending on the version, the magnetic valve can open by current failure or current supply, thus allowing gas to flow to the pressure converter.

The integrated pressure converter releases the switching mechanism and the SSV closes.

electric release with magnetic valve

switching mechanism switching stem pressure converter

connection to outlet pressure line magnetic valve manual release lever

7

Safety Shut-Off Valve RMG 711/S2 DN25 to DN100 3. Dimensions

measuring line

C

C

B

E12 (M14x1,5)

breathing/ discharge line E 12 (M14x1,5)

A

E

D

Dimensions in mm A size DN 25 50 80 100

8

PN ANSI 300 25, 40 RF RJ 170 230 280 320

170 230 290 330

180 240 300 340

B

C

D

ANSI 600 RF RJ

K16 K17

K18 K19

K16 K17

K16 o. K17 Wh 10 - 40 bar

K18 K19

180 250 310 350

130 145 165 175

160 175 195 205

150 175 185 195

165 175 185 195

190 175 185 195

245 245 270 285

E

160 160 190 205

Safety Shut-Off Valve RMG 711/S2 DN25 to DN100 UN-thread bolts dimensions of the screw joint SSV to SSV A

I

B

L

DN

flange type

A

B

UN-thread bolts dimensions G x L

number of thread bolts

25

PN 25 u. 40 ANSI 300 RF ANSI 300 RJ ANSI 600 RF ANSI 600 RJ

18 18 22,5 24 24

2 5 5 5 5

1/2" x 5/8" x 5/8" x 5/8" x 5/8" x

70 80 90 90 90

4 4 4 4 4

50

PN 25 u. 40 ANSI 300 RF ANSI 300 RJ ANSI 600 RF ANSI 600 RJ

23 23 29 33 34

2 5 5 5 5

5/8" x 85 5/8" x 90 5/8" x 100 5/8" x 110 5/8" x 110

4 8 8 8 8

80

PN 25 u. 40 ANSI 300 RF ANSI 300 RJ ANSI 600 RF ANSI 600 RJ

27 29 36 38,5 40

2 5 5 5 5

5/8" x 95 3/4" x 110 3/4" x 125 3/4" x 130 3/4" x 130

8 8 8 8 8

100

PN 25 u. 40 ANSI 300 RF ANSI 300 RJ ANSI 600 RF ANSI 600 RJ

27 32 38 45 46

3 5 5 5 5

3/4" x 105 3/4" x 115 3/4" x 130 7/8" x 150 7/8" x 150

8 8 8 8 8

Note: A distance piece is necessary: 1. When using ductile screw bolts according to DIN 2510 2. When using - control element and magnetic switch - two control elements - two control elements and a magnetic switch

"

200

9

Safety Shut-Off Valve RMG 711/S2 DN25 to DN100 4. Pressure loss depending on the gas flow rate (different inlet pressures and sizes)

inlet pressure (bar)

pressure loss (bar)

2

1

2

5

10

20

1 0,7 0,5 0,4 0,3 0,2 0,1 0,07 0,05 0,04 0,03 0,02

gas flow rate qn in m3/h (natural gas)

0,01 200000 100000 70000 50000 40000 30000 20000

DN

50

10000 7000 5000 4000 3000 2000 1000

example: qn = 8000 m3 (natural gas); pe = 20 bar; DN 50 result: pressure loss 0,14 bar

10

100 DN 80 DN

DN

25

40

70 100

Safety Shut-Off Valve RMG 711/S2 DN25 to DN100 5. Type description (example)

RMG 711 - 50 -

K16

-

HA

-

F

-

FA

-

So

sizes DN 25 50 80 100 SAV-control element Who [bar]

25 50 80 100

Whu [bar]

2,0 ... 40 4,0 ... 40 20 ... 90 20 ... 90

K16 K17 K18 K19

in addition: manual release current supply loss of current remote indication outdoor type special version (to be specified in detail)

HA E1 E2 F FA So

11

We supply you with products for gas pressure regulation: RMG REGEL + MESSTECHNIK GMBH Osterholzstrasse 45, D-34123 Kassel, Germany Telephone (++49) 561 5007-0 • Fax (++49) 561 5007 107 gas pressure regulators and safety devices

RMG-GASELAN Regel + Meßtechnik GmbH Julius-Pintsch-Ring 3, D-15517 Fürstenwalde, Germany Telephone (++49) 3361 356-60 • Fax (++49) 3361 356-836 gas pressure regulating equipment, displacement meters, complete stations

Bryan Donkin RMG Gas Controls Ltd. Enterprise Drive, Holmewood, Chesterfield S42 5UZ, England Telephone (++44) 1246 501-501 • Fax (++44) 1246 501-500 gas pressure regulating equipment, underground compact units

Bryan Donkin RMG Canada Ltd. 50 Clarke Street South, Woodstock, Ontario N4S 7Y5, Canada Telephone (++1) 519 5398531 • Fax (++1) 519 5373339 domestic regulators and safety devices

RMG Messtechnik GmbH Otto-Hahn-Strasse 5, D-35510 Butzbach, Germany Telephone (++49) 6033 897-0 • Fax (++49) 6033 897-130 turbine meters, vortex meters, correctors, flow computers, odorizers

Karl Wieser GmbH Anzinger Strasse 14, D-85560 Ebersberg, Germany Telephone (++49) 8092 2097-0 • Fax (++49) 8092 2097-10

works Beindersheim Heinrich-Lanz-Strasse 9, D-67259 Beindersheim/Pfalz, Germany Telephone (++49) 6233) 3762-0 • Fax (++49) 6233 3762-40 data logging, monitor systems, danger alarm systems

WÄGA Wärme-Gastechnik GmbH Osterholzstrasse 45, D-34123 Kassel, Germany Telephone (++49) 561 5007-0 • Fax (++49) 561 5007-207 design and assembly of gas pressure regulating and metering stations

Die RMG Group of Companies on the internet: http://www.rmg.de

Serving the Gas Industry - WORLDWIDE

We reserve the right for technical changes