Audited Supplier
bench stand or equipment for relief valve
1 .Introduction
The safety valve test bench is a new type of pressure test device developed by our company for reference to GB/T 12242-2005 (pressure
release device and performance test specification), which is used to adjust and test the setting pressure of the safety valve.
2, Function
The safety valve test bench can do the whole pressure test, the discharge pressure test, the back seat pressure test and the pressure safety
performance of various relief valves.
3. System composition
It consists mainly of high pressure power system, clamping device system, and so on
1). power system(High-pressure power source).
Air driven gas booster pump- GBT25 air driven gas booster pump
Driven air pressure: 3-8bar;
Output gas/air pressure 0-100bar;
Test medium: air, nitrogen
2). Clamping system:
The power of the clamping device is provided by a manual hydraulic(oil) pump to provide clamping pressure
,Valve diameter range:DN15-DN200
Technical specification for GBT seriel air gas booster pump inside of stainless steel frame
Model | Pressure boost ratio | Min. gas Inlet pressure PA (bar) | Max.gas Inlet pressure PA (bar) | Max. gas outlet pressure PB (bar) |
Driven air pressure PL | Formula to calculate gas outlet pressure PB | Connection: Gas Inlet / Gas outlet (NPT thread) | Max. flow at driven air pressure of 6bar (L/min) |
GBT25 | 25:1 | 1 | 10 | 200 |
3-8 bar | 25XPL+3.5XPA | 3/8/ 1/4 | 136(at PAof 8 bar ) |
GBT40 | 40:1 | 1 | 10 | 320 |
3-8 bar | 40XPL+ 6XPA | 3/8/ 1/4 | 124(at PAof 8 bar ) |
GBT60 | 10:1/60:1 | 1 | 10 | 480 | 3-8 bar | 60XPL+6X PA | 3/8/ 1/4 | 84(at PAof 8 bar ) |
GBT25/60 | 25:1/60:1 | 10 | 25 | 480 |
3-8 bar | 60XPL+2.5XPA | 3/8/ 1/4 | 80(at PAof 15 bar ) |
GBT100 | 100:1 | 1 | 10 | 800 | 3-8 bar | 100XPL+10XPA | 3/8/ M14*1.5 | 63(at PAof 8 bar ) |
Note: PLdriven air pressure PA: gas inlet pressure PB: gas outlet pressure In order to extend the lifetime of
the pump,
the driven air pressure should not be higher than 8 bar
Main components included in this portable air pressure safety
valve test bench
Typical layout drawing for clamping device 
Typical circuit of such portable safety valve test bench 
Factory corners
