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Ventilation butterfly valves are available in manual, electric and pneumatic applications. The ventilated butterfly valve is machined into a seal ring using the same material as the valve body. The applicable temperature depends on the material selection of the valve body. The nominal pressure is ≤0.6MPa, which is generally suitable for industrial, metallurgical, environmental protection and other pipelines for ventilation and medium flow. Its main features are as follows: 1. The design is novel, reasonable, unique in structure, light in weight, and quick to open and close. 2. The operating torque is small, easy to operate, labor-saving and smart. 3. The adapted materials is used to meet low, medium and high dielectric temperature and corrosive medium, including handle worm gear drive flange type ventilation butterfly valve, worm gear drive flange type ventilation butterfly valve, worm gear drive flange type ventilation butterfly valve.

Manual ventilation butterfly valve structure features:

1. The ventilation butterfly valve has the novel and reasonable design, unique structure, lightweight and quick opening and closing.
2. Butterfly valve operating torque is small, easy to operate, labor-saving and smart.
3. Suitable materials are used to meet low, medium and high dielectric temperatures and corrosive media.
4. There are no connecting rods and bolts in the ventilation butterfly valve, which is reliable in operation and long in service life and is not affected by the flow direction of the medium.

Electric ventilation butterfly valve features:

1. It is designed and manufactured by adopting the new structure of medium-line disc and short-structure steel plate welding. It is compact in structure, light in weight, easy to install, small in flow resistance, large in circulation, avoiding the influence of high-temperature expansion, and easy to operate.
2. There are no connecting rods or bolts in the electric ventilation butterfly valve. It works reliably and has a long service life. It can be installed in multiple stations, independent of the flow of media.

Pneumatic ventilation butterfly valve features:

1. The pneumatic ventilation butterfly valve is compact in structure, light in weight, easy to install, small in flow resistance, large in circulation, avoiding the influence of high-temperature expansion, and light in operation;
2. There is no connecting rod or bolt in the pneumatic ventilation butterfly valve, which is reliable in operation and long in service life. It can be installed in multiple stations and is not affected by media flow.

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