... 2.ISO9001:2008 3.Sell to Europe,Africa,South America. 4.EPDM seat ISO9001 Cast Iron Gate Valve Specification:1. ... (PN10, PN16), BS 10 Table E4. Disc: Grey iron, Ductile iron, with or without EPDM5. Seat: Stainless steel, Brass/ ... , Oil and gasParts & Materials: PartsMaterialsBodyGrey iron, Ductile iron, Carbon steel, Stainless steelDisc Grey iron, Ductile iron, Carbon steel, Stainless steel, with or ...