Is this a one-way valve?
Thread Content
This is the outlet of a double-suction centrifugal pump in circulating water; is it a check valve?
The pilot-operated check valve is installed there primarily to protect the pump; it removes air first to ensure that the pump operates properly and to prevent air from remaining in the pipes, which could cause uneven stress on the pump’s impeller.
Yes, it is a pilot-operated check valve.
This post was last edited by CHANGBAISHI on 2017-5-19 at 16:16. It should be called a “slow-closing check valve”; you can find more details about its working principle on Baidu. It is mainly designed to control the excessive speed of valve spool movement and the impact it has on the system valves.