SERVING THE GAS INDUSTRY WORLDWIDE
General Description
SAFETY RELIEF VALVE RMG 873
RMG REGEL + MESSTECHNIK GMBH
SAFETY RELIEF VALVE RMG 873 Application, Characteristics, Technical Data
Application • for venting gas leakages • for offtake stations in gas transmission and distributing systems, for industrial and power plant supply • suitable for natural gas according to DVGW G 260, other gases on request Characteristics
2
• direct acting, spring loaded, with proportional opening characteristic • safe operation • high response accuracy • no vent line needed • simple maintenance
TECHNICAL DATA max. operating pressure PS
100 bar • solderless pipe connection with cutting ring to DIN 2353, for pipe outer diameter inlet:
connections
12 mm / outlet: 20 mm, 25 mm
response precision catego-
10 bar to 25 bar
AG 2,5
ries
≥ 25 bar to 100 bar
AG 1
valve seat diameter
24 mm
smallest flow diameter
8 mm
venting of the spring housing
internal, via the outlet connection
material
body parts
aluminium alloy, copper-zinc alloy
internal parts
aluminium alloy, copper-zinc alloy
valve sealing disc
plastic material
sealings
NBR
temperature range
-20°C to +60°C
function and strength
acc. to DIN EN 334
DIN-DVGW-Reg.-No.
NG-4305AT0376
CE-sign to PED
TÜV-component testing
acc. to AD-leaflet A2 and Vd TÜV-leaflet
SAFETY RELIEF VALVE RMG 873 Dimensions, Design and Operation
The safety relief valve (SBV) RMG 873 is designed to protect station parts from exceedingly high pressure. It consists of the pressure retaining body parts and the internal parts important for function. The pressure to be controlled takes eect on the comparator designed as a valve plate. If the pressure in the system exceeds the value pre-determined by the setpoint spring, the valve opens and the gas is discharged via the outlet connection. If the pressure to be controlled falls below the response pressure (adjusted value), the valve closes automatically. The closing spring of the moving valve sleeve prevents an overcharge of the valve sealing disc, should the pressure to be controlled fall below a certain value. Then the force of the pre-tensioned setpoint spring is compensated by the body via the piston. In order to avoid unwanted changes in the setpoint, the adjusting screw is countered. A sealed protection cap prevents unpermitted setpoint alterations.
95
piston valve sleeve 100
closing spring relief-line connection
260
valvesealing disc setpoint spring setpoint adjuster protection cap
60 Type Description (example):
RMG 873 - E12 / E20 - F1
Type RMG 873 connection inlet E12 connection outlet E20/E25 E20 / E25 setpoint spring
response pressure
F1 F2
10 to 50 bar 40 to 100 bar
3
SERVING THE GAS INDUSTRY WORLDWIDE
RMG is your worldwide partner for gas control equipment, ranging from exploration to consumer supply. The comprehensive range of RMG products and systems provides you with a total solution for all your gas control and measurement needs. Modern manufacturing techniques combined with our expertise and specialist knowledge in
the design and build of gas control equipment, including fully automated stations has earned RMG a worldwide reputation for supply of safe, accurate and reliable equipment. RMG ... Welcomes the opportunity to meet your business requirements.
WWW.RMG.COM
GERMANY RMG REGEL + MESSTECHNIK GMBH Osterholzstraße 45 34123 Kassel Phone +49 (0)561. 5007-0 Fax +49 (0)561. 5007-107
WÄGA WÄRME-GASTECHNIK GMBH Osterholzstraße 45 34123 Kassel Phone +49 (0)561. 5007-0 Fax +49 (0)561. 5007-207
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ENGLAND
CANADA
BRYAN DONKIN RMG GAS CONTROLS LTD. Enterprise Drive, Holmewood Chesterfield S42 5UZ, England Phone +44. 12 46 501-501 Fax +44. 12 46 501-500
BRYAN DONKIN RMG CANADA LTD. 50 Clarke Street South, Woodstock Ontario N4S 7Y5, Canada Phone +1. 519 53 98 531 Fax +1. 519 53 73 339
POLAND GAZOMET SP. Z O.O. ul. Sarnowska 2 63-900 Rawicz, Polen Phone +48. 65 546 24 01 Fax +48. 65 546 24 08
We reserve the right for technical changes!
Edition 08/2007
Safety Relief Valve RMG 873