Shurflo Pressure Regulating Fresh Water Fill - Wall Mount Shurflos 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.34 GSH Female swivel inlet. 12 NPSM - Male Outlet. Quick, Permanent Wall Mount Continuous Protection from High Pressure Surges Fits Standard Hose Fittings Built-In Check Valve 65 PSI Colors Available 183-029-14 - Chrome 183-029-18 - White Specifications Ov