Reduced pressure pneumatic valve series selection reference

the reduced pressure pneumatic valve, in order to meet the demand of working condition of pressure drop, through reduced the inlet pressure to a needed discharge pressure, and to rely on the energy of the medium itself, make the outlet pressure automatic stable industrial pneumatic control valve. Widely used in industrial steam, compressed air, gas, water, oil, and many other liquid medium is one of the necessary equipment and piping of pneumatic valve.
the reduced pressure pneumatic valve type selection reference:
road, small diameter pipe, copper thread reduced pressure pneumatic valve is used in the general. （ For measuring pressure, with pressure gauge pressure pneumatic valve)
hydraulic pipeline, high-rise buildings, generally USES film spring type vacuum pneumatic valve or X hydraulic pneumatic valve to relieve stress.
, general steam pipeline with special vacuum pneumatic valve.
and steam in low voltage, small and medium size medium, can be directly with bellows type vacuum pneumatic valve.
, working in the medium temperature is higher, generally choose the guide piston vacuum pneumatic valve or the forerunner bellows type pressure pneumatic valve
, gas pressure pneumatic valves are used for control of air, oxygen, nitrogen, ammonia and other media.
, the pressure drop ratio in:,,,,,,,,, use proportion type pneumatic valve to relieve stress.
, steel bottles of corrosive gas, gas pressure reducer is generally selected.
, laboratory, gas purge system, gas bus-bar, test equipment, etc. , generally USES the stainless steel back pressure.
( Note: selection, soft sealing structure, within the prescribed period of time can not have leakage. Metal hard seal structure, the leakage should be no greater than the maximum flow. %）