PN16/CL125 cast iron Kb type diaphragm valve Body Material:Cast iron Size Range:DN50-DN300;Application:chemical, food, paper, steel, mining, pharmaceutical, and other process industries wherever positive shut off, non-contamination, or ease of maintenance is required; Normal pressure PN16/CL125 Seal test pressure 1.76Mpa Strength test pressure 2.4Mpa Suitable temperature NBR:-10~+80°C EPDM:-10-+120°C VITON:-10-+150°C Medium Fresh water,Sea water,Waste water,food stuff,All kinds of oil,All kinds of acid and alkaline liquid etc.