Butterfly valve is a valve commonly used in industrial automation control. Its structure design is simple and easy to use and maintain. It is widely used in petrochemical, chemical, electric power, water treatment and other industries. So, what is a butterfly valve? This article will conduct a professional analysis of the classification, applicable working conditions and advantages of butterfly valves.
1. Classification of Butterfly Valves
Butterfly valves are mainly divided into three types: electric butterfly valves, pneumatic butterfly valves and manual butterfly valves. The electric butterfly valve uses a motor as the driving force, and an electric actuator is installed to realize electric control; the pneumatic butterfly valve uses a pneumatic actuator as a power, and the operation of opening and closing the valve is completed by controlling the air source in the cavity; the manual butterfly valve is relatively simple, and can be operated manually or manually. Manual power opens or closes the valve.
2. Application conditions of butterfly valve
Butterfly valves are widely used in low pressure, medium pressure and high pressure pipelines. Among them, the applicable pressure range of the low-pressure butterfly valve is below 0.6MPa, and the electric butterfly valve is widely used in processing large quantities of liquid or high-power equipment; the medium-pressure butterfly valve is suitable for the medium with a pressure below 1.6MPa, and the working medium can be steam, gas and Liquids, etc.; high-pressure butterfly valves are suitable for controlling high-temperature and high-pressure media such as steam, oil, gas, and acid and alkali liquids, and can withstand pressures up to 6.4MPa.
Butterfly valves are widely used in the following aspects:
1. Food and pharmaceutical: Butterfly valves have smooth control and non-stick properties, so they are suitable for food and pharmaceutical industries.
2. Chemical manufacturing industry: Butterfly valves can withstand high-pressure corrosive and high-temperature fluids, so they are suitable for chemical manufacturing industries.
3. Water treatment: Butterfly valve can be used for flow control and pressure control, suitable for water treatment field.
advantage
1. Low operating force: The butterfly valve is equipped with a short-stroke rotary shaft, so it can realize fast switching with low operating force.
2. Fast switching speed: Compared with other valves, the butterfly valve has a faster switching speed.
3. Easy maintenance: butterfly valve has simple structure and easy maintenance.
4. Various sizes and materials: Butterfly valves can be produced in various sizes and materials to suit various fluids.
5. Low weight: Compared with other valves, the butterfly valve is lighter in weight, so it is easy to install and maintain.
Summarize
Butterfly valve is a widely used control valve. It has simple structure, convenient use and maintenance, and has the advantages of fast switching speed and low operating force. Butterfly valves are suitable for a variety of working conditions, such as food, pharmaceutical, chemical manufacturing and water treatment. Butterfly valves are an option worth considering when conventional control valves are required.