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Safety Relief Valve RMG 832

Product information

serving the gas industry worldwide

Safety Relief Valve RMG 832 Application, characteristics, technical data

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 Characteristics


• 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

technical data max. service pressure pmax

100 bar setpoint spring

adjusting range Wh adjusting ranges (Wh) and response pressure categories /AG




wire-dia (mm)


0,50 ... 2,00 1,00 ... 4,00 2,00 ... 8,00 4,00 ... 16,0 12,0 ... 30,0

1 2 3 4 5

grey yellow brown red green

5.0 5.6 6.3 7,0 8,0

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


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

outlet: 20 mm

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


valve body spring housing measuring diaphragm valve sealing

ambient temperature range

3 kg

function and strength

-15°C to +60°C

function and strength

acc. to DIN 3381

DIN-DVGW registration no.


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

Safety Relief Valve RMG 832 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.


Safety Relief Valve RMG 832 Design and operation

outlet line


internal vent inlet line/ measuring line measuring diaphragm

setpiont spring

setpoint adjuster


Safety Relief Valve RMG 832 Dimensions and connections


Safety Relief Valve RMG 832


Safety Relief Valve RMG 832 Type description

RMG 832 - E12 / E20 - F1 - eA type



type description inlet connection outlet connection setpoint spring external vent connection

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