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Ventilation butterfly valve

It is used in dust-containing cold air or hot air gas pipelines for ventilation, environmental protection projects in chemical, building materials, power stations, glass and other industries, as a gas medium to regulate flow or cut off pipeline control devices. This type of valve should generally be installed horizontally in the pipeline. The butterfly valve is a simple regulating valve and can also be used for switching control of low pressure pipeline media.

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It is used in dust-containing cold air or hot air gas pipelines for ventilation, environmental protection projects in chemical, building materials, power stations, glass and other industries, as a gas medium to regulate flow or cut off pipeline control devices. This type of valve should generally be installed horizontally in the pipeline. The butterfly valve is a simple regulating valve and can also be used for switching control of low pressure pipeline media.

 

  Ventilation butterfly valve features:

 

  1. It is designed and manufactured by adopting a 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, bolts, etc., reliable operation and long service life. Can be installed in multiple stations, independent of media flow

 

  Ventilation butterfly valve use:

 

  Ventilation butterfly valve is a non-closed butterfly valve, widely used in building materials, metallurgy, mining, electric power and other production processes. The medium temperature is ≤300°C and the nominal pressure is 0.1Mpa. It is used to connect, open and close or adjust the medium volume.

 

  Ventilation butterfly valve works:

 

  The ventilating butterfly valve is driven by the motor to drive the actuator, so that the disc can rotate freely within the range of 90° to achieve the purpose of opening and closing or regulating the flow of the medium.

 

It is widely used in many fields such as petroleum, chemical, metallurgy, hydropower, etc. for a part to realize the on-off and flow control of pipeline system. In the well-known butterfly valve technology, the sealing form is mostly sealed, and the sealing material is rubber, polytetrafluoroethylene or the like. Due to structural limitations, it is not suitable for industries such as high temperature resistance, high pressure, corrosion resistance and wear resistance. A relatively advanced butterfly valve is a three-eccentric metal hard sealing butterfly valve. The valve body and the valve seat are connected members, and the sealing surface layer of the valve seat is welded with a temperature-resistant and corrosion-resistant alloy material. The multi-layer soft stack sealing ring is fixed on the valve plate. Compared with the traditional butterfly valve, the butterfly valve has high temperature resistance, light operation, no friction in opening and closing, and the seal is compensated with the increase of the torque of the transmission mechanism when closing, and the butterfly valve is improved. The sealing performance and the advantage of extending the service life.