The design standards of cast steel check valve

The design standards of cast steel check valve
Check valve is a check valve is a device that is installed in the pipes connected to a water heater to prevent the backflow of water.
The design standards of can be summarized as
(1)Design: BS 1868, BS 1873;
(2)Connection: ASME B16.34 Valves Flanged, Threaded and Welding Ends;
(3)Flange: ASME B16.5, ASME B16.47;
(4)Face to face: ASME B16.10;
(5)Size Range: 2"~48", DN 50—1200 mm;
(6)Pressure rating: ANSI Class 150~2500 LB;
(7)Operation: None;
(8)Test: API598;