Model SRVP consists of a main valve, low and high pilot valve, and accessory, which is completely assembled and tested as a unit and ready for field installation. SRV is installed in the bypass line pipe to protect the piping system from the surge(water hammer) by sudden flow change and sudden pump stop. Main Valve is opened when low pilot valve anticipates the negative pressure in piping system to prevent the pipe pressure arisen, and when high pilot valve detects the exceeding pressure in piping system, it discharge pressure. Main Valve is closed tightly when normal operation is in state.
