Take you to understand the advantages and disadvantages of pneumatic butterfly valves
Pneumatic butterfly valves can be divided into pneumatic butterfly valves, electric butterfly valves, manual butterfly valves, etc. The butterfly valve is a kind of valve that uses a circular butterfly plate as an opening and closing part and rolls with the valve stem to open, close and schedule fluid channels; today's editor is popular science. The advantages and disadvantages of pneumatic butterfly valves help you to choose valves.
Pneumatic butterfly valves can be divided into offset plate type, straight plate type, inclined plate type and lever type according to the structure method. According to the sealing method, it can be divided into two types: relatively sealed type and hard sealed type. The soft seal type generally uses rubber ring seal, and the hard seal type generally uses metal ring seal. According to the connection type, it can be divided into flange connection and wafer connection; according to the transmission method, it can be divided into manual, gear transmission, pneumatic, hydraulic and electric.
Pneumatic butterfly valve has the advantages of convenient and sensitive opening and closing, labor saving, low fluid resistance, and can be operated frequently. Simple structure, small size and light weight. The slurry can be transported, and there is little liquid accumulation in the pipe mouth. Under low pressure, the sealing can be completed. Pneumatic butterfly valve has good scheduling performance. Disadvantages of pneumatic butterfly valve 1. The application pressure and working temperature are small. The tightness is poor.
Pneumatic butterfly valve, also known as pneumatic control butterfly valve, is a valve whose closed part (butterfly plate or butterfly plate) is a butterfly plate. It rotates around the valve axis to open and close. It mainly plays the role of intercepting and throttling the pipeline. It can be used for switch control of low-pressure pipeline media. The opening and closing part of the pneumatic butterfly valve is a disc-shaped butterfly plate that rotates around its axis in 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 start port, and the valve opens. 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 risky environments and where a high degree of automation is required. Pneumatic butterfly valves transport various corrosive and non-corrosive fluid media in engineering systems such as coal gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, chemical industry, power generation, and environmental protection, and are suitable for various pipeline conditioning and blocking fluids. Many control terminals for automated control of industrial pipelines are widely used, and the dry and smooth gas is input into the air pressure through the control of the positioner.
