Product Type: Check Valve Product Name: API 594 Check Valve Product Details: Place of Origin: China Certification: ISO9001-CE Product Description Product design and scope Design standard:API 594 Length of structure:API 594 Pipe flange:ASME B16.5 Wall thickness:ASME B16.34 Inspection and test:API 598 Pressure and temperature rating:ASME B16.34 Product scope:NPS 1/2″~NPS 36″,CL150~CL2500 Main body material:WCB、LCB、WCC、WC6、WC9、CF8、CF8M、CF3、CF3M、A890 4A、A105、LF2、F11、F22、F51、F91、F304、F316、F304L、F316L etc.http://www.fagong-valve.com