Duplex Stainless Steel DN20-DN200 Double Flange Triple Offset Butterfly Valve

Product Description

Triple offset butterfly valves are a type of valve that has three offset shafts. The first offset is the shaft offset from the centerline of the valve. The second offset is the shaft offset from the sealing surface. And the third offset is the cone angle offset from the sealing surface. This design allows the valve to achieve a zero-leakage seal, even at high pressures and temperatures.

 

Triple offset butterfly valves offer several features and benefits that make them high-performance solutions for industrial applications. These include:

1. Zero Leakage: The triple offset design allows for a tight seal that prevents leakage, even in high-pressure and high-temperature applications. This reduces the risk of product loss, environmental damage, and safety hazards.
2. High Performance: Triple offset butterfly valves can handle high pressures and temperatures. Making them ideal for applications in industries such as oil and gas, chemical, and power generation.
3. Low Torque: The triple offset butterfly valve design requires less torque to operate, reducing the operation and maintenance cost.
4. Long Lifespan: Triple offset butterfly valves are highly durable. And resistant to wear and tear, resulting in a longer lifespan and reduced replacement costs.

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.

Maintenance

Proper maintenance is essential for ensuring the optimal performance and lifespan of triple-offset butterfly valves. Maintenance tasks include:

1. Regular Inspection: Regular inspection of the valve body, disc, and seat can help identify any signs of wear and tear or damage.
2. Lubrication: Proper lubrication can help reduce friction and wear, as well as prevent corrosion.
3. Cleaning: Regular cleaning can help prevent the buildup of debris and contaminants that can cause damage to the valve.

appearance and connect size