Butterfly Valves, Wafer Style, Body Material Ductile Iron, Max. Water Pressure 200 psi, Pipe Size 12 in, Liner Material EPDM, Disc Material Ductile Iron, Handle Type Bare Stem, Number of Bolt Holes 4, Bolt Circle Dia. 5 in, Standards API 598, API 609 Category A, ASME 16.1, ASME 16.34, ASME 16.5, MSS SP-67, ANSI, API, ASME