... 2501(PN10, PN16), BS 10 Table E4. Disc: Grey iron, Ductile iron, with or without EPDM5. Seat: Stainless steel, Brass/ ... 1.1 times of working pressureWorking Temperature-10°C to 80°C (NBR)-10°C to 120°C (EPDM)Suitable ... MediaWater, Oil and gasParts & Materials: PartsMaterialsBodyGrey iron, Ductile iron, Carbon steel, Stainless steelDisc Grey iron, Ductile iron, Carbon steel, Stainless steel, with or ...