Dual disc check valves

Dualdisc check valves description: 1) Size: NPS 1/2"-32" 2) Pressure: Class 150 - 1, 500 3) Materials: A) 1/2" - 2": A105, LF2, F11, F22, F5, F304, F316, F304L, F316L B) 2" - 36": WCB, LCB, WC6, WC9, C12, C5, CF8, CF3, CF3M, CF8M 4) Design and manufacture standards: API 6D, BS 1868, ASME B16.34 5) Face to face standards: API 6D, ASME B16.10, DIN 3202 6) End connection standards: ASME B16.11, ASME B1.20.1, ASME B16.5, ASME B16.47, DIN2543-2550, ASME B16.25 7) Test standards: ISO5208, API 6D, BS 6755 8) Structure types: Regular pattern, pressure sealed pattern, damping pattern