Working principle of pneumatic clamp type hard seal butterfly valve
Pneumatic clamp type hard sealed butterfly valve is a pneumatic valve that uses a circular butterfly plate that rotates with the valve to achieve opening and closing, mainly used as a block valve to achieve activation action. It can also be designed to have the function of regulating or regulating both section valves. Currently, disc valves are increasingly used in low-pressure large and medium diameter pipelines.
The main advantages of pneumatic clamp type hard seal butterfly valves are simple structure, small volume, light weight, and low cost. This feature is particularly prominent for pneumatic hard seal butterfly valves, which can be installed in high-altitude tunnels and controlled by a two position five way solenoid valve for easy operation. They can also adjust the flow medium. The fluid resistance is small, and the effective flow area of the pneumatic disc valve with a medium to large diameter is large when fully opened. The opening and closing are quick and labor-saving, and the disc can be opened and closed by rotating the disc lever 90 degrees. Due to the nearly equal force of the disc lever on both sides of the shaft, the torque direction is opposite, resulting in a small opening and closing torque. Good sealing can be achieved under low pressure. The sealing materials of the disc valve include nitrile rubber, fluororubber, edible rubber, and PTFE lining, which have good sealing performance. The hard sealed disc valve is a soft hard laminated metal plate with the advantages of metal hard sealing and elastic sealing, and has excellent sealing performance at low temperatures.
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