09,22,2026 37 views
Pneumatic Butterfly ValveThe butterfly plate is installed in the diameter direction of the pipeline. In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis at an angle between 0 ° and 90 °. When it rotates to 90 °, the valve is fully open.
Pneumatic Butterfly ValveGenerally, it should be installed horizontally in pipelines.
Pneumatic Butterfly ValveThe structure is simple, small in size, and lightweight, consisting of only a few parts. It is widely used in general industries such as petroleum, gas, chemical, and water treatment, and is also applied in the cooling water system of thermal power plants.
Pneumatic Butterfly ValveThe classification based on different forms is as follows:
1. Classify by structural form
(1) Center sealed butterfly valve; (2) Single eccentric sealing butterfly valve; (3) Double eccentric sealing butterfly valve; (4) Triple eccentric sealing butterfly valve
2. Classify by sealing surface material
(1) Soft sealed butterfly valve; 1) The sealing pair is composed of non-metallic soft materials; 2) The sealing pair is composed of metal hard materials and non-metal soft materials.
(2) Metal hard sealed butterfly valve. The sealing pair is composed of metal hard materials.
3. Classified by sealing form
(1) Forced sealing butterfly valve: 1) Elastic sealing butterfly valve. The sealing pressure is generated by the compression of the valve seat by the valve plate when the valve is closed, and the elasticity of the valve seat or valve plate; 2) External torque sealed butterfly valve. The sealing pressure is generated by the torque applied to the valve shaft externally;
(2) Pressure sealed butterfly valve. The sealing pressure is generated by the pressurization of the elastic sealing element on the valve seat or valve plate;
(3) Automatic sealing butterfly valve. The sealing pressure is automatically generated by the medium pressure.
4. Classify by work pressure
(1) Vacuum butterfly valve;
(2) Low pressure butterfly valve;
(3) Medium pressure butterfly valve;
(4) High pressure butterfly valve;
(5) Ultra high pressure butterfly valve.
