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Safety Relief Valve, Type SRV

DATA SHEET
SRV

FEATURES :

For Gaseous Media
Inlet Pressure Range upto 4 Bar
Adjustable Operating Pressure
Free of Non Ferrous Metal

APPLICATION :

The Safety Relief Valve has been designed for:

To reduce temporary pressure surges in the control system, especially downstream of Regulator, in order to avoid accidental operation of Safety Shut-Off Valve (SHV).
To avoid a sudden pressure rise in case of gas leakages due to the inadequate closure of gas governors.

Specified for all gas pressure regulating plants with inlet pressure greater than 100 millibar, in conjunction with Safety Shut-Off Valve (SHV), according to the code of practice G490/491.Suitable for air technical combustion gas, bio-gas etc.

Also applicable as bypass governors.

CONSTRUCTION :

Body	Aluminium Die Cast
Diaphragm	Perbunan
Seat	Aluminium
Spindle	Stainless Steel 304
Disc Seal	NBR

One way valve with spring loaded diaphragm assembly confirms to DIN 3381 and DVGW code of practice.
One pressure test point is standard.

TECHNICAL DATA :

Connection	BSP (R)
Inlet Pressure	4 bar maximum
Zero Shut-Off	Up to the set opening pressure
Operating Temperature	-15° C to +60° C.

Opening Prssure (mbar)	Spring Color
20-40	Red
35-50	Yellow
45-75	Green
70-170	Blue
165-330	Black
320-500	White

INSTALLATION:
With opening pressure up to 100 mbar, the spring retaining dome most point upwards.
Above 100 mbar, the fitting position is arbitrary.

Opening pressure can be easily set by means of adjusting or fitting different springs.

VOLUMETRIC FLOW DIAGRAM

SPECIFIC GRAVITY :
Natural Gas	0.62
Town Gas	0.45
LP Gas	1.56
Air	1.0

Note:

Technical specifications details & dimensions are subject to change without prior notice.
Dimensions in the table are approximate subject to final confirmation by AVCON.

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