General Description 711.02edition 07/2004

Serving the Gas Industry - WORLDWIDE

Safety Shut-Off ValveRMG 711/S2 DN25 to DN100

maximum service pressure pmax sizes

connections

valve seat diameter

materials

temperature range class 2

response time

function and strength

CE-sign according to PED

100 bar (depending on flange rating) DN 25, DN 50, DN 80, DN 100

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

equal to pipe size diameter

main valve body cast steel, steelswitching device cast aluminiummeasuring unit aluminium forged alloyinternal parts aluminium, stainless steel, brass, steeldiaphragms, o-rings rubber-like plastic material (NBR)closing spring stainless steel

-20°C to +60°C

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

according to DIN EN 14382 (DIN 3381)

2

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

Safety Shut-Off ValveRMG 711/S2 DN25 to DN100

Adjustable ranges

greybrownred

grey brown red

5.06.37.0

5.0 6.37.0

9.0

9.0

234

234

1

1

2 … 10 5 … 2010 … 40

20 ... 90

0.40.81.2

1,5

1 1 1

5 5 5

1

1

4 ... 10 5 ... 2010 ... 40

20 ... 90

re-engagementdifferentialbetween responsepressure and service pressure ∆p (bar)

0.40.81.2

1.5

re-engagementdifferentialbetween responsepressure and service pressure ∆p (bar)

K 16

K 17

K 18

actu

ato

rel

emen

t

setpoint spring

Nr . colour

wiredia.Ømm

specificsettingrange

Wao (bar)

specificsettingrange

Wau (bar)

responseprecisioncategory

AG

overpressure release underpressure release

3

weights

size DN weight kg

25 50 80100

20265685

connections

measuring linebleed/vent line

E 12E 12

Safety Shut-Off ValveRMG 711/S2 DN25 to DN100

K 19

4

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 spi-ral springs exerting the closing force. After pressure balance has been established manually the pressure compen-sating 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 clo-ses. The valve can be re-opened by turning the valve flap shaft by a handlebar. The switching mechanism automa-tically adjusts itself into open position. After re-engagement of the valve the handlebar is automatically pressed out of its retaining hole by theforce 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.

Safety Shut-Off ValveRMG 711/S2 DN25 to DN100

5

Main valve

cover

valve body

valve flaplever

valve flap

pressure compensatingvalve

indication

closing springs(flat spiral spring)

spring housing

valve flap shaft

switching mechanism

switching stem

manual release lever

operatinglever

handlebar

Safety Shut-Off ValveRMG 711/S2 DN25 to DN100

proximity sensor

control element

6

breathing/discharge line

setpoint spring

setpoint adjuster

valve flap shaft

switching mechanism

switching stem

pressure converter

amplifying valve

measuring line

double diaphragm system

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)

outlet pressure

atmosphere

Safety Shut-Off ValveRMG 711/S2 DN25 to DN100

7

electric release with magnetic valve

Safety Shut-Off ValveRMG 711/S2 DN25 to DN100

connection to outlet pressure line

magnetic valve

switching mechanism

switching stem

pressure converter

manual release lever

operation with magnetic valve

The pressure to be monitored prevails in front of the magnetic switch. Depending on the version, the magneticvalve 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.

8

3. Dimensions

Dimensions in mm

255080

100

sizeDN

A B C D E

170230280320

170230290330

180240300340

180250310350

130145165175

160175195205

150175185195

165175185195

190175185195

245245270285

160160190205

PN25, 40

ANSI 300 RF RJ

ANSI 600RF RJ

K18K19

K16K17

K18K19

K16K17

Safety Shut-Off ValveRMG 711/S2 DN25 to DN100

CB

C

A E D

breathing/discharge lineE 12 (M14x1,5)

E12 (M14x1,5)

measuring line

K16 o. K17Wh 10 - 40 bar

9

DN flange A B UN-thread bolts number of thread boltstype dimensions G x L

PN 25 u. 40 18 2 1/2" x 70 4ANSI 300 RF 18 5 5/8" x 80 4

25 ANSI 300 RJ 22,5 5 5/8" x 90 4ANSI 600 RF 24 5 5/8" x 90 4ANSI 600 RJ 24 5 5/8" x 90 4

PN 25 u. 40 23 2 5/8" x 85 4ANSI 300 RF 23 5 5/8" x 90 8

50 ANSI 300 RJ 29 5 5/8" x 100 8ANSI 600 RF 33 5 5/8" x 110 8ANSI 600 RJ 34 5 5/8" x 110 8

PN 25 u. 40 27 2 5/8" x 95 8ANSI 300 RF 29 5 3/4" x 110 8

80 ANSI 300 RJ 36 5 3/4" x 125 8ANSI 600 RF 38,5 5 3/4" x 130 8ANSI 600 RJ 40 5 3/4" x 130 8

PN 25 u. 40 27 3 3/4" x 105 8ANSI 300 RF 32 5 3/4" x 115 8

100 ANSI 300 RJ 38 5 3/4" x 130 8ANSI 600 RF 45 5 7/8" x 150 8ANSI 600 RJ 46 5 7/8" x 150 8

UN-thread bolts dimensions of the screw joint SSV to SSV

Safety Shut-Off ValveRMG 711/S2 DN25 to DN100

A

L

I

B

"

200

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

10

200000

100000

50000

10000

20000

1000

2000

5000

30004000

4000030000

70000

7000

0,01

0,1

1

4. Pressure loss depending on the gas flow rate (different inlet pressures and sizes)

pre

ssu

re lo

ss (

bar

)g

as f

low

rat

e q

n in

m3 /

h (

nat

ura

l gas

)

DN 25

DN 50

DN 100

DN 80

0,02

0,030,040,050,07

0,2

0,30,40,50,7

21 100

inlet pressure (bar)

example:

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

7040201052

Safety Shut-Off ValveRMG 711/S2 DN25 to DN100

11

sizes DN

25 25 50 50 80 80100 100

SAV-control elementWho [bar] Whu [bar]

2,0 ... 40 K164,0 ... 40 K17

20 ... 90 K1820 ... 90 K19

in addition:

manual release HAcurrent supply E1loss of current E2

remote indication F

outdoor type FA

special version (to be specified in detail) So

RMG 711 - 50 - K16 - HA - F - FA - So

5. Type description (example)

Safety Shut-Off ValveRMG 711/S2 DN25 to DN100

Serving the Gas Industry - WORLDWIDE We reserve the right for technical changes

RMG REGEL + MESSTECHNIK GMBHOsterholzstrasse 45, D-34123 Kassel, GermanyTelephone (++49) 561 5007-0 • Fax (++49) 561 5007 107

gas pressure regulators and safety devices

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

We supply you with products forgas pressure regulation:

Bryan Donkin RMG Gas Controls Ltd.Enterprise Drive, Holmewood, Chesterfield S42 5UZ, EnglandTelephone (++44) 1246 501-501 • Fax (++44) 1246 501-500

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

Karl Wieser GmbHAnzinger Strasse 14, D-85560 Ebersberg, GermanyTelephone (++49) 8092 2097-0 • Fax (++49) 8092 2097-10

Heinrich-Lanz-Strasse 9, D-67259 Beindersheim/Pfalz, GermanyTelephone (++49) 6233) 3762-0 • Fax (++49) 6233 3762-40

data logging, monitor systems, danger alarm systems

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

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

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

works Beindersheim

gas pressure regulating equipment, underground compact units