Nozzle check valve size, 2 to 20 pressure, 150#, 300#moc, Wcb, Cf8, Cf8m according to the usage operating pressure, 10 kg/cm2Final link flange endapplication, Air, Gas, Liquidstandard manufacturing standard api 594 & api 6d one-on-one api 6d inspection and testing API 598 compliance standard pressure, Temperature rating asme b 16. 34 flanged end dimension Standard B16. 5 by ASME application oil, Gas, Petrochemical plant. Thermal and nuclear power plant. Industrial chemical piping. Distillery plant. Fertilizer plant. Textile and process industries. Marine & mining pulp & paper mill sugar mill features low, Pressure drop in a compact design. Axial flow path venturi effect. Reduce maintenance cost & easy installation short stroke length reduce closer time. Self, Aligning conical disc is the only moving part. Consistent tight shut, Off. Minimal pressure drop reduce operating cost. Reduces valve wear normally associated with turbulent flow from upstream piping. Fast dynamic response reduces reverse velocity and water hammer potential.