The Grandfar non-return valve is suitable for domestic water service, heating and Air-conditioning plants, compressed

air systems. It can be installed in any position: Vertical, horizontal, oblique. Perfect seal at low and high pressure, with

a wide temperature rang. Very silent functioning, compact dimensions, superior performancesand constant quality.

Its function is to ensure the one-way flow of the liquid in the suction pipe and make the pump work normally.

When the pump stops working intermittently for a short time, the liquid cannot return to the water source tank.

The suction pipe is filled with liquid to facilitate the start of the pump