This device is designed to absorb the pressure wave caused by the sudden manoeuvre of a valve.
Pressure reducing valves aim to reduce the water pressure in order to have a constant pressure downstream.
Regulating valves are protective devices which aim to reduce the pressure of the gas which flows through them in order to get an adjusted and constant pressure.
Safety valves protect installations against damage from network over pressure. In the event that the pressure goes over the setting, the valve allows fluid to escape until the pressure goes back to a normal level.