Double Offset Butterfly Valve

Valvesonly Europe is your premier Double Offset Butterfly Valve manufacturers Germany and Italy. This is a type  of butterfly valve used in high performance applications. The double offset design of a double offset butterfly valve allows the disc to move away from the seat via action mechanism, hence the name. This valve is a type of quarter-turn valve used to control the flow of fluids in pipelines. It earns its name from its unique design, featuring two offsets:

• The first offset involves the shaft positioned behind the valve disc.
• The second offset slightly shifts the shaft position behind the valve disc in relation to the pipe centerline.

This dual offset configuration enables the valve disc to move in a cam-like motion when opening or closing, minimizing friction between the disc and the seat. As a result, the valve provides a tight seal with reduced wear and tear, allowing it to operate effectively even in high-pressure or high-temperature applications.

Difference between Double Offset and Triple Offset Butterfly valve?

The primary differences between double offset and triple offset butterfly valves lie in their design complexity and sealing mechanisms:

1. Number of Offsets: Double offset butterfly valves have two offsets while .
2. Triple offset butterfly valves have three offsets: the first two offsets are similar to those in double offset valves, while the third offset involves an asymmetrical shape in the sealing mechanism
3. The sealing mechanism is primarily achieved through a combination of the offset design and the interference fit between the disc and the seat. Whereas in Triple offset butterfly valves utilize a laminated or metal-to-metal sealing mechanism in addition to the offset design.
4. These valves are suitable for a wide range of applications where reliable sealing and moderate operating conditions are required. Triple offset butterfly valves are typically used in demanding applications where tight shut-off, high-pressure, high-temperature, or corrosive conditions are present, such as in oil and gas, petrochemical, and refining industries.

When in need of good quality valve, contact Valvesonly Europe your leading Double Offset butterfly valve manufacturers in Germany and Italy.

Description:

Materials: Ductile Iron, WCB, SS304, SS316, Aluminium Bronze, SS410, SS420, SS416, SS431

Operation: Gear Operated, Electric Actuated, Pneumatic Actuated

End Connection: Wafer Type

Nominal Diameter: DN50 to DN600

Nominal Pressure: PN10 to PN63, Class150 to Class1500