Dual Check Valve, Size 1 In., Body Material Bronze, Max. Temp. 180 Degrees F, Width 1 1/2 in, Length 4 3/8 in, Standards ASSE 1003, IAPMO/ANSI/CAN Z1117, NSF/ANSI/CAN 372, NSF/ANSI/CAN 61, Compliance ASSE 1024, CSA B64.6