Water Pressure Regulator - Wall Mount - Black - 65 PSIShurlfo's exclusive diaphragm design prevents high-pressure damage often caused by city water systems. These high performance water entries limit water pressure and include a check valve. 3/4" GHT - Female Swivel Inlet. 1/2" NPSM - Male Outlet. Features:Quick, Permanent Wall MountContinuous Protection from High Pressure SurgesFits Standard Hose FittingsBuilt-In Check Valve65 PSIFor RV and Marine use