Metallurgical Valve-Electric Ventilation Butterfly Valve

Overview of electric ventilation butterfly valve;
Electric Ventilation Butterfly Valve is suitable for two cut-off occasions. The connection between valve and actuator adopts direct connection mode. The electric actuator can control operation without servo amplifier and input 220VAC power supply. The butterfly valve of electric ventilation butterfly valve is made of steel plate welding, which has the characteristics of short structure size, light weight and convenient installation. The valve has small driving moment, flexible opening and closing, and convenient operation. There is no visible clearance between the sealing pairs, and the leakage rate is small. The expansion gap between the butterfly plate and the valve body of the electric ventilation butterfly valve is large, which can effectively prevent the stuck phenomenon caused by thermal expansion and cold contraction. Electric ventilation butterfly valve can be equipped with a variety of driving devices, such as manual device, worm gear transmission device, pneumatic device, electric device. Ventilation butterfly valves are widely used in industrial pipelines such as metallurgy, normalization, power, building materials, mines and so on. They can control or regulate medium gas.
Main uses and application scope of D941W electric ventilation butterfly valve:
The valve is installed in the cold air, gas, air and flue gas pipelines of hot blast stoves, heating furnaces, heat exchangers, dust collectors and other systems of iron and steel metallurgical system. It can cut off medium in a large area, reduce medium pressure (allow internal leakage), and also regulate medium flow.
II. Main parameters:III. Working Principle and Structural Characteristics
Electric ventilation butterfly valve is a vertical butterfly plate valve with regulating characteristics. It consists of valve body, valve plate, valve shaft, driving device and other main components. All of them are welded structure. The shaft end is sealed with flexible graphite braided packing, and it is high temperature resistant. The valve plate is opened and closed by hand wheel to drive the manual device. The final output moment of the manual device is transmitted to the valve shaft. The valve plate is rotated by the rotation of the valve shaft to change the cross-section area of the pipeline so as to achieve the function of cutting off medium in a large area, reducing medium pressure or regulating medium flow rate. The regulating angle is 0-90 degrees.
IV. Major Parts and Components Materials