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Butterfly valve is simple in structure, small in size and light in weight, and consists of only a few parts. Moreover, it can be quickly opened and closed only by rotating 90 degrees, and the operation is simple. At the same time, the valve has good fluid control characteristics. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0 and 90. When it rotates to 90, the valve is fully opened. When the flange butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is very small, so it has good flow control characteristics. Butterfly valve has two sealing types: elastic seal and metal seal. Elastic sealing valve, the sealing ring can be embedded in the valve body or attached to the periphery of the butterfly plate.
The triple offset design allows for bidirectional sealing, meaning the valve can provide effective closure regardless of the flow direction.
This feature enhances the versatility of the valve and ensures reliable performance in varied operating conditions.
Compared to traditional butterfly valves, triple offset designs generally require lower torque for operation.
This contributes to efficient actuation and ease of use, especially in large-sized valves.
Triple-Offset valves use three offsets to create a high performance and low friction seal.
The fundamental feature of the valve design is the three offsets, these are highlighted in the 3D figure below:
Offset 1 - an offset between the shaft centreline and seat
Offset 2 - an offset between the centreline of the pipeline and the valve shaft
The valve shaft is offset from the centre line in both the X and Y axis, which makes up the first two offsets.
Offset 3 - An angular offset of the seating faces creating the conical geometry of the seat faces
The third offset consists of a conical angle on the sealing faces meaning the sealing faces only come into contact at the point of sealing.
The triple offset design provides bubble-tight sealing, ensuring a complete and tight closure of the valve.
This is particularly advantageous in applications where leakage prevention is critical, such as in high-pressure or hazardous fluid environments.
The continuous contact-less rotation and seating characteristic of the triple offset design result in minimal wear and tear.
This leads to an extended service life and reduced maintenance requirements, making it a cost-effective choice in the long run.
Triple offset butterfly valves are suitable for high-temperature applications due to the use of materials that can withstand elevated temperatures.
This makes them ideal for industries such as petrochemical, refining, and power generation.
Size: 3"(DN80)-96"(DN2400)
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