Triple Offset Butterfly Valve

Shipman Valves valves offer several benefits over other types of butterfly valves. They have a low-pressure seal, require less energy to operate, and can handle a wider range of temperatures and pressures. These advantages make them ideal for industrial and water treatment applications.

The geometry of these valves is designed to eliminate the friction between the disc and seat that can occur in conventional concentric butterfly valves. This is possible thanks to the three different offsets on the valveā€™s body. The first offset is located in the center of the valve, where the stem is attached to the disc. This allows the valve to open with minimal friction, which helps increase its lifespan. The second offset is situated on the side of the valve body, which minimizes wedging and binding between the seat and disc. It also improves the abrasion resistance of the seat and increases its lifetime service.

Inside the Butterfly: Understanding the Inner Workings of Triple Offset Designs

The third offset is found at the axis of the seat cone angle. This offset position allows the valve to be seated in an angled position, which minimizes seat damage while allowing the valve to be opened with minimum friction and reducing the operating torque. This allows the valve to have a long lifespan, even in high-cycle applications. This design also makes the valve more suitable for use in harsh environments where chemical corrosion and abrasion can occur.

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