... or Nonstandard: Standard 2,Power: Manual 3,Material: Stainless Steel 4,Pressure: High Pressure orge stainless check valve Specifications:1) Size: 1 ... , WC1, WC5, WC6, WC9, C12, CF3, CF8, CF3M, CF8M6)Operation: manual control, gear operated, motor actuated, pneumatic operated