Design standard: AWWA C504; Connection standard: ASME B16.1, ANSI/AWWA C111 A21.11; Mounting flange: MSS SP101, ISO5211.; Face to face: AWWA C504 Size: Wafer 3"-20" ; Flanged 3"-160" ; MJ 3"-48" ; Operation type: manual, electric, pneumatic, hydraulic.