The design of butterfly valves can vary depending on specific characteristics and applications. Two popular types are the triple offset and double offset butterfly valves, which differ in their number of offsets and capabilities. Essentially, the triple offset butterfly valve has three offsets while the double offset butterfly valve has two. This difference results in unique features for each type that make them suitable for different needs.
Double Offset Butterfly Valve:
Double offset butterfly valves have two offsets:
By having an eccentric shaft offset, the valve's shaft is deliberately placed away from the center, which results in less friction between the disc and the seat. This design allows for smoother operation and extends the lifespan of the valve.
Eccentric disc offset is a feature where the butterfly disc is intentionally positioned away from the centerline of the pipe. This unique design minimizes wear on the valve seat and enhances the sealing capabilities of the valve.
For control applications, commonly used for both on/off and throttling, this device is frequently employed.
This flexible solution is perfect for various industries with diverse needs, especially those that involve the handling of moderate to high-pressure and temperature situations.
This particular component can effectively achieve a secure shut-off, making it ideal for situations where even minimal leakage is unacceptable and a perfect seal is a must-have.
Industrial processes such as power generation, water treatment, and other applications frequently utilize this technology.
Triple Offset Butterfly Valve:
Triple offset butterfly valves have three offsets:
Offset eccentric shaft: By minimizing friction, the shaft is deliberately positioned off-center, much like in a double offset configuration.
The offset eccentric disc enhances the sealing performance as it is positioned away from the centerline.
The distinguishing feature of a triple offset valve is its conical or cam-shaped sealing surface. This unique design ensures a tight seal with minimal friction when the valve is closed. The third offset, whether it is conical or cam-shaped, plays a crucial role in achieving optimal performance.
Designed primarily for demanding conditions, our product is perfect for high-performance applications that require bubble-tight shut-off and low friction.
Industries such as oil and gas, petrochemical, and high-pressure and high-temperature applications often make use of this technology.