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Double Offset Butterfly Valve

Specification of Double Offset Butterfly Valve

ParameterDetails
Size Range2" – 72" (DN50 – DN1800)
Pressure RatingClass 150 – 600 (PN10 – PN100)
Design StandardAPI 609, EN 593
Face to FaceAPI 609, EN 558, ISO 5752
Flange StandardASME B16.5, ASME B16.47, EN 1092-1
Inspection & TestingAPI 598, EN 12266-1, ISO 5208
Fire Safe (Optional)API 607, API 6FA
Body MaterialCarbon Steel, Stainless Steel, Duplex Stainless Steel, Alloy Steel
Disc MaterialWCB, CF8, CF8M, Duplex SS, Aluminum Bronze
Stem Material17-4PH, F6a, SS316, Duplex SS
Seat MaterialPTFE, RPTFE, EPDM, NBR, Metal Seat
Leakage ClassISO 5208 Rate A / API 598 Bubble Tight (Soft Seat)
Connection TypeWafer, Lug, Double Flanged
OperationLever, Gear Operator, Pneumatic Actuator, Electric Actuator, Hydraulic Actuator
Temperature Range-46°C to +425°C (Depending on Seat Material)
ApplicationOil & Gas, Petrochemical, Chemical, Power Plant, Water Treatment


Features of Double Offset Butterfly Valve

Double Offset Disc DesignThe shaft is offset from both the valve centerline and seat centerline, reducing disc-to-seat contact during opening and closing for smoother operation.Reduced Seat WearThe do...
Features of Double Offset Butterfly Valve

Double Offset Disc Design

The shaft is offset from both the valve centerline and seat centerline, reducing disc-to-seat contact during opening and closing for smoother operation.


Reduced Seat Wear

The double offset geometry minimizes friction between the disc and seat, significantly extending seat life compared with concentric butterfly valves.


Lower Operating Torque

Reduced sealing friction requires less operating torque, making the valve suitable for manual, pneumatic, and electric actuation while lowering actuator size and cost.


Bubble-Tight Shutoff

Soft-seated designs provide reliable bidirectional bubble-tight sealing, ensuring dependable isolation in demanding process applications.




Longer Service Life

Less mechanical wear on sealing components results in extended maintenance intervals and reduced lifecycle costs.


Excellent Performance in Medium-Pressure Systems

Optimized for Class 150–600 (PN10–PN100) applications, delivering dependable performance across a wide range of industrial services.


Compact and Lightweight Construction

Requires less installation space and weighs considerably less than gate or globe valves, reducing piping loads and installation costs.


Bi-Directional Sealing Capability

Designed to provide reliable sealing in both flow directions for greater installation flexibility.


Ideal Balance of Performance and Cost

Offers better sealing performance and longer service life than concentric butterfly valves while providing a more economical solution than triple offset butterfly valves for many industrial applications.


Features of Double Offset Butterfly Valve
SAVVY IMPORT AND EXPORT CO., LTD.
minaxue@savvyft.com
+86-18958911667
Room 1104, Poly Center Office Building, Lucheng District, Wenzhou City, Zhejiang Province, China
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minaxue@savvyft.com
+86-18958911667
Room 1104, Poly Center Office Building, Lucheng District, Wenzhou City, Zhejiang Province, China
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Room 1104, Poly Center Office Building, Lucheng District, Wenzhou City, Zhejiang Province, China
minaxue@savvyft.com +86-18958911667
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