Tripe Eccentric Butterfly Valve Features:- * Three-dimensional incline taper airproof seat 900 openinger cleaning * Triple eccentric, Bereled wedge disc small friction and torque, self-clean * Manual, electric, pneumatic 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 dimension complies to BSS5155 4. Flanges comply to API 605 5. Pressure-temperature grade complies to ANSI B6.34