Double Offset Butterfly Valve
The Double Offset High-Performance Butterfly Valve represents an advanced valve design, integrating the best structural features from multiple butterfly valve technologies. Its disc features a spherical arc sealing surface that achieves true dynamic sealing through system pressure alone, delivering superior sealing integrity and extended service life in demanding applications.
Double Offset Butterfly Valve Product List
ASTM A351 CF8M Butterfly Valves, API 609, 2 Inch, CL150, Lug
ASTM A216 WCB Butterfly Valve, 8 Inches, Double Offset, Lug
API 609 Double Offset Butterfly Valve, CF8M, 2 Inch, 150 LB
ASTM A351 CF8M Lug Butterfly Valve, 2 Inch, CL150 LB, Lever
Double Offset Lug Butterfly Valves, A216 WCB, 20 Inch, CL150
Carbon Steel Lug Butterfly Valves, A216 WCB, 20 IN, CL150 LB
ASTM A351 CF8 Butterfly Valve, 8 Inch, Double Offset, Wafer
API 609 Lug Butterfly Valves, ASTM A351 CF8M, 8 IN, CL150 LB
Lug Type Butterfly Valve, API 609, A351 CF8M, 12 Inch, CL150
Stainless Steel Butterfly Valves, A351 CF8M, 8 Inches, CL150
Stainless Steel CF8M Butterfly Valve, API 609, 12 IN, CL150
Double Offset Lug Butterfly Valve, API 609, A351 CF8M, 14 IN
Stainless Steel Lug Butterfly Valve, A351 CF8M, 14 IN, CL150
ASTM A351 CF8M Butterfly Valves, 20 Inch, CL150 LB, Lug Ends
Stainless Steel Butterfly Valves, API 609, CF8M, 20 IN, CL150
API 609 Lug Butterfly Valve, ASTM A351 CF8M, 20 Inch, 150 LB
Total 28 Records, 16 records per page
Double Offset Butterfly Valve
The Double Offset High-Performance Butterfly Valve is a new type of butterfly valve designed by absorbing the advantages of several different structural butterfly valves. The sealing surface of the valve plate is a spherical arc surface. The sealing mechanism achieves a true dynamic seal through system pressure, thus providing reliable sealing performance and durability. It features a small volume, light weight, wide manufacturing range, and is easy to maintain and repair. Due to its double offset butterfly plate design and single-piece flexible lip-shaped sealing seat, it is ideal for applications requiring reliable sealing and good regulating characteristics. It can be used for quick shut-off or regulating flow.
Double Offset Frictionless Design
- 1st offset: Shaft is positioned downstream from the centerline of the seat.
- 2nd offset: Shaft is off center from the vertical axis of the seat.
- ISO 5211 Top Flange
- In addition to standard, durable V-ring packing, you can also choose from optional graphite
- high temperature packing or emissions control packing.
- Bi-Directional, Shut off performance
- Seat Options: Rubber, PTFE, RPTFE, or Fire Safe PTFE
- The double offset operating principle minimizes seat wear and lowers operating torque to
- improve durability.
- Positive sealing is mechanically achieved and does not rely on line pressure assistance.
Seat Structure
Double Offset PTFE Seat Butterfly Valve
- A surplus of material between the PTFE Seat and Disc ensures a reliable seal in a low pressure environment.
- In high pressure situations, the force of the medium pushes against the seat contacting the sealing surface for a stronger seal.
- The disc surface has a conical design to reduce frictional force. The valve seat can also be replaced or repaired easily.
Double Offset Fire Safe PTFE Butterfly Valve
- Fire Safe valve seat with dual seal includes a primary PTFE seat insert and metal seat.
- In the event that the PTFE insert is destroyed, the secondary metal seat provides an effective shut-off.
Shaft Retention
- Externally retained, double blowout proof stem design as API 609
- External: Shaft is designed with an integral collar and gland follower to prevent blowouts.
Zero Leakage
- Disc-Seat sealing is achieved by evenly loading torque force onto the disc's laminated seal
ISO 5211 Top Mounting
Different End Connections Available:
