... Africa,South America. 4.EPDM seat DIN3202 F4/F5 NRS Gate Valve Specification:1. Size: 1-1/2”-24” ( ... Oil and gasParts & Materials: PartsMaterialsBodyGrey iron, Ductile iron, Carbon steel, Stainless steelDisc Grey iron, Ductile iron, Carbon steel, Stainless steel, with ... , PTFELevelMalleable iron, Carbon steelContact: Ms. Annie Tel: +86-311-85520268/9, Fax: +86-311-85520266 DIN3202 F4/F5 NRS Gate Valve