Sand Casting Valve Stem Cap 1)Grey Iron, Ductile Iron 2) ... NC Machine and CNC 4)ISO9001:2008 Sand Casting Valve Stem Cap1)Grey Iron, Ductile Iron2)Sand Casting Process3)Machined ... in accordance with ISO9001:2000Other Parts for Gate ValveGateHandleStemScrew HousingBonnetGate Valve BodyValve SeatInsertHandwheelStandard: ASTM, BF,BS, JIS, UNI, ANSI ... ,BS, JIS, UNI, ANSI, ISO etc. Sand Casting Valve Stem Cap