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Circular louver ventilation butterfly valve
It is widely used in the dust containing cold air or hot air gas pipelines of ventilation and environmental protection projects in metallurgy, building materials, chemical industry, power station, glass and other industries, especially at the inlet and outlet of fans as air volume regulators or hoists
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Introduction
Product use
It is widely used in the dust containing cold air or hot air gas pipelines of ventilation and environmental protection projects in metallurgy, building materials, chemical industry, power station, glass and other industries, especially at the inlet and outlet of fans as air volume regulators or hoists
Product features
·The valve body and door plate are of integral welded structure, with short structure length and light weight.
·The door panel is of integral frame type, with good rigidity and small flow resistance.
·Louver, multi shaft structure and shaft seat adopt assembly structure, which is convenient for maintenance.
·The sealing filler adopts flexible stone black, the sealing specific pressure is adjustable, the valve plate streamline structure, the flow resistance is small, the flow is uniform, the opening and closing torque is small, the action is sensitive, and the performance is reliable.
·The louver ventilation valve plays an air volume regulation role in the pipeline and cannot be used as a flow cutoff.
standard specification
| Design Criteria | GB/T12238 |
| Structure length | GB/T12221 |
| Flange connection size | GB/T1724.6 |
| Inspection and test | GB/T13927 |
Model and transmission mode
| Manual D345W | Worm gear |
| Pneumatic D645W | Switch/regulation/intelligent/explosion-proof |
| Electric D945W | Switch/regulation/intelligent/explosion-proof |
Main parts and materials
| Valve body | Q235/Q345/304/316 |
| Valve plate | Q235/Q345/304/316 |
| Stem | 20Cr13 |
| Filler | Flexible graphite/PTFE |
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Main： Butterfly valves, blind valves, gate valves, globe valves, ball valves, check valves, regulating valves, gates, metallurgical valves, hydraulic dams
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