Zhejiang Huaxia valve company which the online product showroom is ,We specialize in producting and exporting valves(ball/gate/check/globe, butterfly),for food field and industrial field material is cast iron/ss316/ss304/316L/304L/WCB/A105 and so on.we also passed CE,DNV,API 6D. Iterms: Swing Check valve Specificaiton: 1. Ma: Cast Steel 2. Bolted Cover 3. Flanged Or Butt-Welding ends 4. Manufacture in accordance with API 6D 5. Face to Face /End to End. Dimensions to ANSI B 16.10 6. Flange dimensions to ANSI B 16.25 7. Valve tested to API 6D