Valve Type: Cast Steel Swing Check Valves Valve Size: 2 ”- 36”. Pressure Rating: Class 150 – 2500. Standards: Design & Manufacture BS 1868-1873, ASME B16.34, API 6D Inspection & Test API 598, API 6D End Flange Dimension ASME B16.5 End Flange Dimension ASME B16.47A, MSS ...