sand casting/cast iron knife gate valve body Standard:DIN,ASTM,JIS etc. OEM service offered ... gas, marine....) Especially we are most professional on gate valve and knife valve castings.Name: cast iron knife gate valve body 1) Material: gray iron, ductile iron ... 5) Pressure: low pressure, medium pressure, high pressure6) Manufacture standards: API/ANSI, BS4504, JIS, MSS, ISO, EN, DIN, NF 7) ...