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Triple Offset Double Flanged Butterfly Valve

Our triple offset design reduces the friction between disc and seat, and increases the valves service life. Disc and seat oblique cone design turns the compression seal into torque seal, achieves bi-directional seals. Metals and non-metallic compound seal ring combines the rigidity of the metal, the wear-resistance and flexibility of the soft seat, ensures reliable seal and greater performance. And we offer the material test report and the manufacture conformance for each order. If you have special test requirement, such as PT, MT, RT, it is available upon your request.

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Triple Offset Double Flanged Butterfly Valve    

 

1. FEATURES

QQ截图20171113102011.png Design: EN558 Series 20, ISO 5752 Series 20, API 609,   



                          201711121330569082755.png

QQ截图20171113102011.png Less seat wear, Low torque 
QQ截图20171113102011.png Extreme long service life
QQ截图20171113102011.png Torque generated resilient metal seal provides
    zero leakage performance
QQ截图20171113102011.png Suitable for cryogenic and high temperature services

2. TECHNICAL SPECIFICATIONS   
QQ截图20171113102011.png Pressure range: PN 6 to 100 bar, ASME 150 to 600   
QQ截图20171113102011.png Size: DN50-1800 (NPS 2”-72”)
QQ截图20171113102011.png Temperature range: -196℃~+425℃
QQ截图20171113102011.png End connections: Flange, wafer, BW, lug
QQ截图20171113102011.png Drive mode: hydraulic, worm-gear, electric, pneumatic


3. DIFFERENT TYPES OF SEATS

图片12.png


4. THE CENTERLINE,DOUBLE OFFSET AND TRIPLE OFFSET DEIGIN DIAGRAM

 图片13.png

 

5. MATERIALS

PARTS

MATERIALS

Body

WCB, CF8, CF8M, CF3M, CF3

Seat

NBR, PTFE

Disc

WCB, CF8M, CF8, CF3, CF3M

Stem

F6A, F304, F316,17-4PH, F51

Packing Bushing

A276 410, SS304, SS316

Thrust Washer

SS 304+Graphite or PTFE

Packing

Flexible Graphite or PTFE

Gland

A105, SS316

OTHER MATERIALS AND TRIMS ARE AVAILABLE


6. FLOW curve chart for your reference

 图片14.png

 


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