Sand Casting Valve Stem Cap 1)Grey Iron, Ductile Iron ... Valve Stem Cap1)Grey Iron, Ductile Iron2)Sand Casting Process3)Machined by NC Machine and CNC4)ISO9001:2008Stem Cap, Gate Valve ... is in accordance with ISO9001:2000Other Parts for Gate ValveGateHandleStemScrew HousingBonnetGate Valve BodyValve SeatInsertHandwheelStandard: ASTM, BF,BS, JIS, ... , JIS, UNI, ANSI, ISO etc. Sand Casting Valve Stem Cap