Butterfly Valves, Wafer Style, Body Material Carbon Steel, Max. Water Pressure 200 psi, Pipe Size 4 in, Liner Material RPFTE, Disc Material 316 Stainless Steel, Handle Type Lever, Bolt Circle Dia. 187/250 in, Standards API 598, API 607, API 609, MSS SP-68, ANSI 150/300/600, API 598/607/609/MSS-SP-68