... Sell to Europe,Africa,South America. 4.EPDM seat ISO9001 Cast Iron Gate Valve Specification:1. Size: 1-1/2”-24” ... iron, Ductile iron, with or without EPDM5. Seat: Stainless steel, Brass/Bronze etc6. Testing: API 598, ISO 52087. Options: Lever, Gearbox ... " ringNBR, PTFELevelMalleable iron, Carbon steelContact: Ms. Annie Tel: +86-311-85520268/9, Fax: +86-311-85520266 ISO9001 Cast Iron Gate Valve