... .Hot tags: Flange Knife Gate Valve, China, factory, supplier, cheap, manufacturerMetal Seat Flange Knife Gate ValveHuachao Metal Seat Flange Knife Gate Valves are deigned as metal to metal seat for high temperature and ... , ANSI 125-150Standards compliance: MAA sp-81Material: stainless steel, carbon steel, cast iron, ductile ironMetal seat: 2Cr13, 201, 304, 316, 316LEnd connections: flangeDrive ...