Pressure Release Valve used to protect the system by releasing pressure surges in water network elevation lines to atmosphere quickly which is caused by sudden changes in water speed due to pumps put into/out of service.
When network pressure exceeds set point, valve opens by itself quickly and protects system by releasing over pressure.
When the pressure decreases to normal level, it is closed slowly and automatically tightly without causing surge.
Provides pressure surge protection for irrigation system
Adjustable pressure setting maximizes performance for individual applications