Butterfly valves are widely used not only in general industries such as petroleum, gas, chemical industry, and water treatment, but also in cooling water systems of thermal power plants. Pneumatic quick-install butterfly valves have become an indispensable and important part of the industrial field due to their simple structure, excellent performance, and wide application fields. Its working principle is like the working principle of precision instruments. Let us follow the stainless steel sanitary valve manufacturer Yuyi Pipe Valve to understand the advantages and principles of pneumatic quick-install butterfly valves. Pneumatic quick-install butterfly valves are pneumatic valves that use a circular butterfly plate that rotates with the valve to achieve the opening and closing action. It is mainly used as a cut-off valve, and can also be designed with the functions of regulating or sectional valves and regulation. At present, butterfly valves are increasingly used in low-pressure large and medium-diameter pipelines.
The main advantages of pneumatic quick-install butterfly valves are simple structure, small size, light weight and low cost. This feature of pneumatic quick-install butterfly valves is particularly significant. It is installed in a secret passage at a high altitude. The control operation is simple through the two-position five-way solenoid valve, and the flow rate of the medium can also be adjusted. The fluid resistance is small, and the effective flow area of the medium and large-caliber pneumatic butterfly valve is large when it is fully opened. The opening and closing are quick and labor-saving. The opening and closing can be completed by rotating the disc wrench 90 degrees. Since the medium force of the disc wrench on both sides of the rotating shaft is almost equal, and the torque generated is in the opposite direction, the opening and closing torque is small, and good sealing can be achieved under low pressure. The butterfly valve sealing materials are nitrile rubber, fluororubber, edible rubber, and lined with polytetrafluoroethylene, so the sealing performance is good. Among them, the hard-sealed butterfly valve is a soft and hard laminated metal sheet with the advantages of metal hard sealing and elastic sealing, and has excellent sealing performance regardless of low temperature. The structure and working principle of pneumatic quick-install butterfly valve are applicable to environmental analysis. The butterfly plate of the pneumatic quick-install 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 open. The pneumatic quick-install butterfly valve has a simple structure, small size, light weight, and is composed of only a few parts. Moreover, it can be quickly opened and closed by rotating 90°, and the operation is simple. At the same time, the electric valve has good fluid control characteristics. When the 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. Therefore, the pressure drop generated by the valve is very small, so it has good flow control characteristics. There are two types of sealing forms of pneumatic quick-install butterfly valves: elastic sealing and metal sealing. For elastic sealing valves, the sealing ring can be embedded in the valve body or attached to the periphery of the butterfly plate.
