Reduced pressure pneumatic valve shall meet the performance requirements of testing

Reduced pressure pneumatic valve in the usual production often used, several problems should be paid attention to when choose. Reduced pressure pneumatic valve is suitable for the industrial compressed air, steam, water, gas, oil and other liquid medium. Therefore, given the number of possible structure change, when you consider when choosing reduced pressure pneumatic valve, pneumatic valve is one of the main stress of the exact performance, should be fully testing in the first place, to ensure the good use effect. At the time of detection, the reduced pressure pneumatic valve should be able to meet the performance requirements are as follows:










(1) within a given level of spring pressure, outlet pressure between the maximum and minimum values should be able to adjust continuously, can not have jam and abnormal vibration.

(2) for decompression of the soft sealing pneumatic valve in a fixed period of time can not have leakage, for metal seal vacuum pneumatic valve, the leakage should be no greater than the maximum flow of 0. 05%.

3. Outlet flow changes, the outlet pressure negative deviation values, direct acting type is not more than 20%, guiding type is not greater than 10%.

(4) when the inlet pressure change, its outlet pressure deviation values, direct acting type is not more than 10%, guiding type is not greater than 5%.

5) to sit idle decompression, pneumatic valve, adjusting spring in a free state. Import and export side should cover closed.