Cast Steel Swing Check Valve

We are offering cast steel swing check valve.
technical standards
standard:design and manufacture:asme b16.34、api 6d； end flange dimension:asme b16.5(for nps24)。 bw end dimension:asme b16.25 face to face and end to end:asme b16.10 pressure-temperature ratings:asme b16.34
description
the features of check valve:bolted bonnet;swing and lift disc;metallic seating surfaces.
body and bonnet connection :the body and bonnet of class 150-class 900 check valves are usually with studs and nuts,and the body and bonnet of class 1500-class 2500 check valves are usually of pressurized seal design.
body-to-bonnet joint:stainless steel+flexible graphite wounded gasket is used for class150 and class300 check valve;stainless steel+flexible graphite wounded gasket is used for class600 check valve,and joint gasket is also optional for class600 check valve;ring joint gasket is used for class900 check valve;pressurized seal design is used for class1500-class2500 check valve.