Air Operated Butterfly Valve

Product Advantages

The main advantages of air operated butterfly valves are their simple structure, small size, light weight, and low cost. These characteristics are particularly significant. They are convenient to operate when installed in high-altitude, concealed passageways and are controlled by a 2-position 5-way solenoid valve. They can also regulate the flow of the medium.

Working Principle

A air operated butterfly valve uses a circular disc that rotates with the valve stem to open and close, achieving the actuation of the action of the action. Primarily used as a shut-off valve, it can also be designed to have regulating or shut-off/regulating functions. Butterfly valves are increasingly used in low-pressure, large- and medium-diameter pipelines.
Butterfly valves have a simple structure, small size, and light weight, consisting of only a few parts. They can be quickly opened and closed with just a 90° rotation, making operation simple.

Furthermore, this electric valve has excellent fluid control characteristics. When a butterfly valve is fully open, the thickness of the butterfly plate represents the sole resistance to the medium flowing through the valve body. Therefore, the pressure drop across the valve is minimal, resulting in excellent flow control characteristics. Butterfly valves are available in two sealing types: resilient seal and metal seal. In resilient seal valves, the sealing ring can be embedded in the valve body or attached to the periphery of the butterfly plate.
If a butterfly valve is required for flow control, the most important factor is correctly selecting the valve size and type. The structural principle of butterfly valves is particularly suitable for manufacturing large-diameter valves. Butterfly valves are widely used not only in general industries such as petroleum, gas, chemical, and water treatment, but also in cooling water systems of thermal power plants.

1. Compact and lightweight, easy to disassemble and maintain, and can be installed in any position.
2. Simple and compact structure, low operating torque, and rapid 90° rotation opening.
3. Flow characteristics are nearly linear, with good regulating performance.
4. The connection between the butterfly plate and the valve stem uses a pinless structure, overcoming potential internal leakage points.
5. The butterfly plate features a spherical outer circle, improving sealing performance and extending valve lifespan, maintaining zero leakage even after over 50,000 pressurized opening and closing cycles.
6. The seals are replaceable and provide reliable bidirectional sealing.
7. The butterfly plate can be coated with materials such as nylon or PTFE according to user requirements.
8. This valve can be designed for flange or wafer connections.
9. The actuation method can be manual, electric, or pneumatic.

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