Detailed Product Description API Stainless Steel Flange Swing Check Valve Materials: 1) Body, bonnet and disc: WCB, WC1, WC6, WC9, C5 C12, CF8, CF8M, CF3, CF3M 2) Trim: 1Cr13, F22, F304, F316, F304L, F316L We can supply a wide range of butterfly valves, gate valves, globe valves, check valves, ball valves, relief valves, Strainers, hydraulic control valves, and pressure reducing valves. Features: Features:^$Features: 1) Size: 2" - 42" 2) Class: 150lbs - 1,500lbs 3) Design and manufacture: API 600 / API 6D 4) Face to face: ANSI B16.10 / API 6D 5) Flange dimension: ANSI B16.5 6) Inspection and test: API598 and API6D Notes: The specifications can be designed and satisfied for your special requirements We have obtained Certificates of CE, API 6D, API 607, TS and ISO 9001