Working principle of electric butterfly valve: The working power supply usually includes: AC220V, AC380V, etc. Input signal: 4~20mA 0~10v and other weak current signals. After the adjustment type electric actuator and the valve stem are connected and debugged, the electric energy is used as the driving force to drive the hard-sealed butterfly valve plate for a 0-90° partial rotation. Receive the 4-20mA signal of
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Electric butterfly valves belong to a variety of electric valves and electric regulating valves. Electric butterfly valve connection methods mainly include: flange type and wafer type; electric butterfly valve sealing forms mainly include: rubber seal and metal seal. The electric butterfly valve controls the switch of the butterfly valve through the power signal. The product can be used as a shut-off valve, control v
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According to the characteristics of butterfly valve, the following principles should be followed when selecting butterfly valves: ① Compared with gate valves, globe valves, ball valves, plug valves, etc., butterfly valves have the smallest structural size, lightest weight, and low price. Therefore, for large-size pipelines, replacing other shut-off valves with butterfly valves is very beneficial to reduce the constr
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The butterfly valve has 90. Features such as rapid opening and closing of rotation, light weight, small structure size (especially wafer butterfly valve) and other advantages. However, its sealing reliability is relatively poor, so it is often used in medium and low pressure and medium and low temperature conditions in industrial production equipment. With the large-scale petrochemical production equipment, it is a
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Butterfly valves are suitable for pipelines transporting various corrosive and non-corrosive fluid media in engineering systems such as generators, coal gas, natural gas, liquefied petroleum gas, city gas, cold and hot air, chemical smelting and power generation and environmental protection, and are used for regulation and interception. The flow of the medium. Butterfly valves are suitable for flow regulation. Since
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Cryogenic valves, as the name implies, are valves that can work in cryogenic and cryogenic conditions. The operating temperature is demarcated. Valves with operating temperatures below -40°C are usually called cryogenic valves, which are mainly used for gas liquefaction, For separation, transportation and storage equipment, the operating temperature can reach below -270℃. Currently, there are gate valves, globe v
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