China Check Valve manufacturers Executive standard Deign specFaca to faceFlanged endTest and check GB/T12235GB/T12221ASME B16.5JB/T9092 Main performance specification Nominal pressureShell testBody materialApplicable medium 1.6MPA2.4CF8/CF8MWATER,STEAM,OIL MAIN external and connecting dimensions DNLDD1D2b-fZ-d 401601451108516-34-18 5017016012510016-34-18 6518018014512018-34-18...