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Pneumatic Vacuum Butterfly Valve

Keywords: metering pump accessories

Classification:

Pneumatic butterfly valve

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  • DESCRIPTION

    Features of pneumatic high vacuum butterfly valve:

     1. The bearings adopt self-lubricating bearings with small friction resistance.

    2. The butterfly plate sealing ring can be replaced without disassembling the valve from the pipeline.

    3. The valve can cut off the medium in both directions, achieving reliable sealing and zero leakage in both directions.

    4. The shaft seal adopts a special structure with automatic compensation to isolate the connection between the outside atmosphere and the pipeline, thereby ensuring the vacuum of the pipeline.

      

    Pneumatic vacuum butterfly valve structure diagram

     

     Product parameters

    Technical parameters of pneumatic high vacuum butterfly valve:

    Scope of application (Pa)

    2x105~1.3x10-5

    Air leakage rate (Pa.L/S)

    ≤1.3x10-6

    Drive form

    Compressed air (4-7bar)

    Medium temperature(℃)

    Nitrile rubber -25 ~ +80, fluorine rubber -30 ~ +150

    Flange standard

    GB6070.3-85

    Installation location

    arbitrary

    Action form

    Single-acting type: air-closed type (B)--the valve position is open (FO) when the air is lost; air-opening type (K)--the valve position is closed (FC) when the air is lost.

    Double-acting type: air-closing type (B)--the valve position is maintained when the air is lost (FL); air-opening type (K)--the valve position is maintained when the air is lost (FL)

    control method

    Switch type (switch two-position control)

    Adjustable type (4-20mA signal adjusts flow size)