JR PRODUCTS CITYH2O FLNG W/1/2MPT BK Direct OEM Replacement; Used For RV Fresh Water System; Flange Type; 1-1/2 Inch Diameter Cutout Size; 3 Inch Outside Diameter x 1-11/16 Inch Valve Depth; Lead Free Brass Check Valve With 1/2 Inch Male Pipe Thread (MPT); Black; Single