Three-dimensional incline taper airproof seat 900 openinger cleaning
Triple eccentric,Bereled wedgedisc small friction and torque,self-clean
Manual,electric,pneumatit and gear operation etc.
A216WCB,A351 CF8,A351CF8M
A217LCB,A351 CF3,A351CF3M

Technical requirements
1.Design and manufacture comply to MSS SP 67-1997
2.Inspect and test comply to API 598
3.Face to face dimetion complies to BSS5155
4.Flanges comply to API 605
5.Pressure-remperature grade complies to ANSI B6.34