Our triple eccentric butterly valve realizes zero leakage relying on the composite stainless steel sealing ringinstalled in the disc.

Zero leakag isimplemented by the elastic sealing ing mounted on the disc.The elasticity of sealing ring is produced byitsradialcompression andlexibilty.The contact surface between the sealing ing and seatis anobliue cone.The contact angle between them gives slight"wedge fect°,makingthe sealing ring producing lexibiliy and radial compression.The even contact between the seat and sealing ring,and the elasticity of sealing makes theload on the seat even,thus to pertorm closest cut of by the lowest torue.The elasticty produced by the torque makes the valve closely cut off.regardless of the flow direction or pressure of medium.

Purpose and Characteristic

Elastic property of composite metal sealing ring performs zero leakage.

The torque seal ensures constant zero leakage characteristics of the valve.

The design of right-angled rotation with zero friction isimplemented by the distinctive triple eccentric principle;iteliminates the friction between theseat and sealing ring in 90°rotation.

STLone-piece hard-surface seat may adapt to many working conditions,whichis featured with long service life and easy maintenance.

One-piece cast(sheet welded)body,face to face dimensions conforming to ISO05752,ASME16.10 and API609,replacement of high performancebutterfly valves and other types of valves,easy and flexible installation,intrinsical freproof property thanks to all metal structure and leak tightperformance.

Anti-blowout stem designs for high dependability,completely conforming to API6109.

The valve position indicator on the stem and the flange mounted at the top of are in the favor of the indication of disc position.

The stem of American standard triple ecentric butterl valve,is a shaftstruoture,stem and disc are connected by key or pin-key combination.