Quick Detail
Design standard: API609
Body material: CF8M
Nominal diameter: 8″.6″ 12″
Pressure: CL150LBS
End connection: RF. Flange/FF flange ANSI B 16.9
Face to face: EN558 Series 13
Normal. Working temperature: -45℃~+650℃.
Test and inspection: API 598.
Bubble Tight Closure
Fire Safe Function
Blowout-Proof Stem
Renewable Seat Butterfly valves.

Product Range
Metal Seat Butterfly Valve API ANSI
Pressure Rating from 150LBS to 2500LBS.
Size Range: 2″-24″
Face to face: API 609 & BS5155 & ISO5752 & BS EN558 SERIES 20/14/16
Available Body Material : ASTM A216WCB/LCB/WCC/CF8/DUPLEX 4A 5A
Available Body Seat: overlay 13cr/STL /SS316
Available Dis Material c: ASTM A216WCB/LCB/Stainless steel /SDSS
Availed Protect Ring: A105/LF2/CF8M
Available Laminated Seal: SS316+SS316/Graphite /PTFE /Teflon

Optional available on request
Metal to Metal Seal: A182F316+Stellite STL

Performance
Three-offset butterfly valve, the structural feature is that the cone-shaped axis of the sealing surface of the butterfly plate is deviated from the cylindrical axis of the body while the eccentric shaft position of the double-eccentric stem is eccentric The sealing cross-section is no longer a true circle, but an ellipse, the shape of the sealing surface is therefore asymmetric, one side is inclined to the body centerline, and the other side is parallel to the body centerline. The biggest feature of this third eccentricity is that the sealing structure is fundamentally changed. It is no longer a position seal, but a torsion seal, that is, it does not rely on the elastic deformation of the valve seat, but depends entirely on the contact surface pressure of the valve seat to achieve the seal. The effect, therefore, solved the problem of zero leakage of the metal valve seat in one fell swoop, and because the contact surface pressure is proportional to the medium pressure, high pressure and high temperature resistance are also solved.

Application
oil and gas mining, offshore platforms, petroleum refining, petrochemicals, inorganic chemicals, energy generation, and other important pipelines.