Class 600~2500 Pressure Seal Gate Valve OS&Y, Rising stem, Flexible wedge Pressure seat Bonnet, Threaded or welded seat ring ASTM A216 WCB,A217 WC6,A351CF8,A351CF8M, A351 CF3,A351 CF3M,A351 CN7M
Standards compliance Design and Manufacture: AMSI B16.34,API600 API6D,BS1414 Face to face(end to end):ANSI B16.10,API6D Flanged connection : ANSI B16.5 Butt welded end: ANSI B16.25 Test and inspection:API598,API6D
A. Back up ring: Absorbs thrust applied by internal pressure B. Thrust ring: Protects the soft metallic gasket from deformation C. Gasket: Unique angular design provides superior sealing