... 558-1, BS5155 , ISO 5752Top flangeISO 5211BodyDuctile iron,Stainless steel,WCBDiscDuctile iron,CF8,CF8M,C95400,C95500StemSS416,SS420,SS431,SS316SeatNBR,EPDMSuitale ... oil etc.Working Temperature:-10°C~150°COperator:Suitalbe for handles(dn50~300), gear operators, electric and pneumatic control ... gate valves and so on with the materials of ductile iron, carbon steel, stainless steel to order. Our products ...