Butterfly Valves, Wafer Style, Body Material Ductile Iron, Max. Water Pressure 250 psi, Pipe Size 2 in, Liner Material Buna-N, Disc Material 316 Stainless Steel, Handle Type Bare Stem, Number of Bolt Holes 4, Bolt Circle Dia. 3 1/4 in, Standards API 598, API 609 Category A, ASME 16.1, ASME 16.34, ASME 16.5, MSS SP-67, ANSI, API, ASME