CHECK VALVE Mk4 3/8" IN - 1/2" STEM OUT

CHECK VALVE Mk4 3/8" IN - 1/2" STEM OUT

Check Valve (Demand Valve) with 3/8" John Guest IN + 1/2" Smooth Stem Tail OUT.

The smooth 1/2" Stem outlet allows the outlet of this unit to be fitting with a John Guest Push-Fit fitting.

A Check Valve is used in the beer line just before the beer engine to stop the beer flowing forward through the beer engine when there is no demand (pump not being pulled).

If you are going to use this valve to stop siphoning in a none pressurised system in PVC hose you will most probably require the adaptor fitting for the inlet to make this into a barbed tail. This is product PI251216S