Reduced pressure pneumatic valve inlet pressure fluctuations

( Reduced pressure pneumatic valve inlet pressure fluctuations should be controlled in inlet pressure given value % ~ %, if exceed the scope, reduced pressure pneumatic valve performance will be affected. ( Often reduced pressure of the pneumatic valve pneumatic valve after pressure Pc should be less than before the pneumatic valve. Times, namely Pc< 。 Ｐ１。 ( Decompression of the pneumatic valve each leg spring applies only within a certain range of outlet pressure, beyond the scope of a spring should be replaced. ( Work in the medium temperature is higher, generally choose the guide piston vacuum flash to quit the forerunner bellows type pneumatic valve to relieve stress. ( Medium for air or water, Liquid, general appropriate chooses direct acting diaphragm pressure pneumatic valve or pilot diaphragm pressure pneumatic valve. ( Medium for steam, appropriate chooses the guide piston vacuum pneumatic valve or pilot bellows type pressure relief valve. ( For operation, adjustment and maintenance convenience, the reduced pressure pneumatic valve should be installed in horizontal pipe runs.