Regulating steps and the main function of reduced pressure pneumatic valve

, close vacuum pneumatic valve, pneumatic valve in front of the gate open decompression after pneumatic valve pneumatic valve, brake manufacturing downstream low pressure environment;
, will adjust screw counterclockwise rotation to the on position ( Relative to the lowest outlet pressure) , then close after decompression pneumatic valve pneumatic valve gate;
, slowly open decompression pneumatic valve pneumatic valve in front of the gate to open;
and slowly turn adjusting screw clockwise, the outlet pressure to the pressure needed to ( The table after pneumatic valve pressure shall prevail) ； After adjusted, fasten the
nut, pneumatic valve open decompression after pneumatic valve gate;
, such as adjusting the outlet pressure is higher than the set pressure, must start from the first step to readjust, namely only from low pressure to high pressure.

the main function of reduced pressure pneumatic valve and pressure relief mechanism of pneumatic valve by pneumatic valve flow within the local resistance to reduce the water pressure of water flow, the range of the pressure drop by the connection of pneumatic disc membrane or the import and export pressure difference on both sides of the piston automatic adjustment. Constant ratio reduced pressure principle is to use the floating piston in the hydraulic pneumatic valve body ratio control, import and export side pressure ratio is inversely proportional to the import and export side piston area ratio. The reduced pressure pneumatic valve work smoothly without vibration; Pneumatic valve body without spring, so no spring corrosion, metal fatigue failure were evident; Good sealing performance, leakage and dynamic pressure reduction (both The water flow) And static pressure reduction ( Traffic too) ； Especially in relief at the same time does not affect the water flow.
flow through reduced pressure pneumatic valve, though there is a lot of head loss, but due to reduced water waste and make the system layout and reasonable flow rate distribution and improve the system operating mode, so the overall is still the energy saving. 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.