Fresh Water Inlet; B&B Molders; Used For City Fresh Water Fill; 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; UV And Impact Resistant; IAPMO/ NSF/ CSA/ TEI Certified; Single; B&B Cross Reference 160-85-A-36-A