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Safety Relief Valve RMG 832

General Description

832.00 Edition 09/2000

Serving the Gas Industry - WORLDWIDE


Safety Relief Valve RMG 832 Application • as a safety relief valve for gas leakages • as a main safety device • for stations in municipal gas distribution and industrial supply systems • suitable for natural gas and all non-corrosive gases Advantages • simple, compact design • can be mounted in any position • safe operation • high response accuracy • integrated vent line for application as a safety relief valve for gas leakages

1. Technical Data max. service pressure pmax adjusting ranges (Wh) and response pressure categories /AG)

(bar) 0,5 ... 2 1 ... 4 2 ... 8 4 ... 16 12 ... 30

setpoint spring no. colour wire dia. 1 grey 5.0 2 yellow 5.6 3 brown 6.3 4 red 7 5 green 8

AG (%) 5 / 2.5 2.5 / 1 2.5 / 1 2.5 / 1 2.5 / 1

valve seat diameter

8 mm

flow rate coefficient KG

32 m3/h

connections

screw connections without brazing to DIN 2353, PN 100 for outside pipe diameter inlet: 12 mm outlet: 20 mm

vent for spring housing - as relief valve for gas leakages: - as main safety device:

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100 bar

internal venting via discharge line separate vent-line connection, outside pipe diameter 12 mm

materials

valve body spring housing measuring diaphragm valve sealing

weight

3 kg

ambient temperature range

-15°C to +60°C

function and strength

acc. to DIN 3381

DIN-DVGW registration no.

NG-4305AT0046

aluminium wrought alloy aluminium wrought alloy synthetic rubber (NBR) synthetic rubber (FPM)


Safety Relief Valve RMG 832 2. Measurements

145 80

65

28

70

E12

E12 (only with separate vent-line connection)

250

95

E20

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Safety Relief Valve RMG 832 3. Design and Operation This safety relief valve (SBV) was designed to automatically relieve a gas stream from a pressure bearing line, as soon as the pressure prevailing in the system to be protected rises up to the pre-set response pressure limit. The SBV will close again, after this pressure will have fallen below the closing pressure limit. The RMG 832 is a spring-loaded, direct acting safety relief valve (without auxiliary energy from the inlet pressure). The valve is available in two versions: as a relief valve (SBV) for gas leakages, and as a main safety device. If it is used as a relief valve for gas leakages, provision is made for internal venting of the spring housing. If the valve is used as a main safety device, its spring housing is provided with a connecting piece for a separate external vent line. The pressure to be monitored is conveyed to the measuring diaphragm through the inlet connection and compared to the force given by the pre-adjusted setpoint spring. If the pressure within the system to be protected rises above the pre-set response pressure, the valve opens and allows the gas to escape through the outlet line. The relief valve will close automatically, as soon as the pressure prevailing in the system to be protected will have fallen below the response pressure level. The piston of the control element is relieved and balanced by a pressure spring protecting the valve sealing from stress and premature wear. The measuring diaphragm is designed as a preformed diaphragm which guarantees a high response accuracy, even if the valve is exposed to low ambient temperatures. The setpoint spring is guided by a metal sleeve bearing to absorb its lateral forces.

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Safety Relief Valve RMG 832

outlet line internal vent inlet line/ measuring line measuring diaphragm

setpiont spring setpoint adjuster cover

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Safety Relief Valve RMG 832

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Safety Relief Valve RMG 832 4. Type description

(example)

RMG 832

-

E12 / E20

-

F1 - eA

type inlet connection outlet connection setpoint spring external vent connection

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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, below ground gas control modules

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

The other RMG Companies: 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

Betriebsstelle 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

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

Serving the Gas Industry - WORLDWIDE

We reserve the right for technical changes

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