SWING CHECK VALVE DBP NO. 201 Size: NPS 1/2"-36" Pressure: Class 150-1500 Material:1/2"-2": A105, LF2, F11, F22, F5,F304, F316, F304L, F316L 2"-36": WCB, LCB, WC6, WC9, C12, C5, CF8, CF3, CF3M, CF8M Design & Manufacture Std.:API 6D,BS 1868,ASME B16.34 Face to Face Std.:API 6D,ASME B16.10,DIN 3202 End Connection Std.: ASME B16.11,ASME B1.20.1,ASME B16.5, ASME B16.47,DIN2543-2550,ASME B16.25 Test Standard:ISO5208,API 6D,BS 6755 Structure Type: Regular Pattern,Pressure Sealed Pattern,Damping Pattern   WAFER CHECK VALVE DBP NO. 202 Split-Disc Check Valve Size:NPS 2"-40" Pressure: Class 150-1500 Material: WCB, LCB, CF8, CF8M, CF3, CF3M, WC6, WC9, C5, C12 Design & Manufacture Std.: API 6D, API 594, ASME B16.34 Face to Face Std.: API 594, API 6D End Connection Std.: ASME B16.5, ASME B 16.47 Test Standard: ISO5208, API 6D