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Take you to understand the advantages and disadvantages of pneumatic butterfly valve


Release time:

2021-06-18

Take you to understand the advantages and disadvantages of pneumatic butterfly valve

pneumatic butterfly valveIt can be divided into pneumatic butterfly valve, electric butterfly valve, manual butterfly valve, etc. Butterfly valve is a valve that uses a circular butterfly plate as an opening and closing part and rolls with the valve stem to open, close and dispatch the fluid channel; today's editor is popular science. The advantages and disadvantages of some pneumatic butterfly valves help you choose and buy valves.
Pneumatic butterfly valve according to the structure can be divided into offset plate, straight plate, inclined plate and lever type. According to the sealing method can be divided into two kinds of sealing type and hard seal type. Soft seal type generally choose rubber ring seal, hard seal type generally choose metal ring seal. According to the connection type, it can be divided into flange connection and sandwich connection; according to the transmission method, it can be divided into manual, gear transmission, pneumatic, hydraulic and electric.
The benefits of pneumatic butterfly valve, open and close convenient sensitive, labor-saving, fluid resistance is small, can often operate. Simple structure, small size and light weight. Can transport mud, less liquid accumulation in the pipe mouth. Under low pressure, the sealing can be completed. Pneumatic butterfly valve scheduling performance is good. Disadvantages of pneumatic butterfly valve 1, the use of pressure and working temperature planning is small. Sealing is poor.
Pneumatic butterfly valve, also known as pneumatic control butterfly valve, is a closed part (butterfly plate or butterfly plate) for the butterfly plate valve, it rotates around the valve axis to open and closed, the first from the pipeline closure and throttling role. Can be used for low pressure pipeline medium switch control. The opening and closing part of the pneumatic butterfly valve is a disc-shaped butterfly plate that rotates around the axis of the valve body to achieve the purpose of opening and closing or conditioning. In industrial control, the principle structure of the pneumatic actuator drives the air source and the gear shaft to rotate counterclockwise from the starting port, and the valve is open. The driving air source is input from the closed port, the gear shaft rotates clockwise, and the valve is closed.
Pneumatic butterfly valves are suitable for blocking fluids for use in hazardous environments and where a high degree of automation is required. Pneumatic butterfly valve transport gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, chemical essence, power generation, environmental protection and other engineering systems in a variety of corrosive and non-corrosive fluid medium, suitable for a variety of pipeline conditioning and blocking fluid. Widely used in many automated control terminals of industrial pipelines, dry and smooth gas is input into air pressure through positioner control.