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Butterfly valve is a regulating valve with a simple structure, and can also be used for switching control of low pressure pipeline media. The electric ventilation butterfly valve is a non closed type butterfly valve. Electric pneumatic ventilation butterfly valves are used in ventilation and environmental protection projects in industries such as chemical, building materials, power stations, glass, and other industries, in dusty cold or hot air gas pipelines, as pipeline control devices for regulating flow or cutting off gas media. This ventilation valve should generally be installed horizontally in the pipeline.
Structural characteristics of electric ventilation butterfly valve
1. Designed and manufactured using a new type of structure welded by a central line type disc plate and a short structural steel plate, it features compact structure, light weight, convenient installation, small flow resistance, large flow capacity, and easy operation.
2. No connecting rods, bolts, etc. inside, reliable operation, long service life. It can be installed at multiple stations without being affected by the flow direction of the media.
Purpose of ventilation butterfly valve
Ventilation butterfly valve is a non closed type butterfly valve, widely used in production processes such as building materials, metallurgy, mining, electric power, and other production processes. The medium temperature is ≤ 300 ℃, and the nominal pressure is 0.1Mpa. It is used to connect, open, or close, or regulate the flow of the medium.
Working principle of electric ventilation butterfly valve
The electric ventilation butterfly valve is driven by a motor to drive the actuator, allowing the butterfly plate to rotate freely within a 90 ° range to achieve the purpose of opening and closing or regulating the flow of media. Electric actuators are generally 220V or 380V, switch type and adjustment type.
Installation points of ventilation butterfly valve
3. The position, height, and inlet and outlet directions of the device must meet the design requirements. Note that the direction of media flow should be consistent with the arrow direction marked on the valve body, and the connection should be firm and tight.
4. Before installing the valve, it is necessary to conduct a visual inspection. The nameplate of the valve should comply with the current national standard "General Purpose Valve Signs" GB12220. The device shall undergo strength and tightness tests before use, and can only be used after passing the tests. During the strength test, the test pressure shall be 1.5 times the nominal pressure, and the duration shall not be less than 5 minutes. The valve shell and filler shall be considered as qualified if there is no leakage. During the tightness test, the test pressure shall be 1.1 times the nominal pressure; The duration of the test shall comply with the requirements of GB50243.
