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    Double Ball Exhaust Valve

    Size: 2”~12”

    Pressure Rating:PN10-PN25

    Material:Ductile Iron

    Design Standard:GB12224-2015/EN1074-2000

    Inspection Standard:EN12266

    Application medium:Water

    Application Temperature:0-80℃

    Applied projects:Water conservancy construction

    TAG: , ,


    Tel: +86-13849184495
    Fax: +86-371-55883235
    E-mail: weisidun@wsdvalve.com
    Address: ZhengZhou,HeNan,China.

    What is air exhaust valve?

    Air exhaust valves are applied on the water pipelines as the equipment to exclude the gas in pipelines. It enhances the efficiency of water transport and protects pipelines from transformation and break. When the pipeline is under negative pressure, this valve will suction air automatically to prevent the pipeline from breaking. The double ball exhaust valve has a big gas displacement for double air vents, and it owns a maintenance valve, close it when repaired then it can be on-line overhaul.

    Advantages of air exhaust valve:

    (1)Advanced design with a simple mechanism, strong float to prevent cracking during sudden water hammer, and quick closure.

    (2)Self-moving mechanism to resist blow shut under higher air velocity even up to the sonic velocity of air.

    (3)No arms or levers to prevent vibrating, bending, or direct closure of the float.

    (4)Smooth cage outside of the float. Keep float moving in the specified guide rail.

    (5)Bottom rubber buffer for collision prevention, and drain easily with proper holes around the cage during vacuum.6.Outside screen will be an option for safety and prevent insects and birds in.

    (6)Fully fusion epoxy coated inside and outside of valve for long service life.

    (7)Good for distribution pipeline system, if for transmission pipeline with high impact water hammer, the anti shock device should be required.

    Double air valves have three functions :

    (1)Evacuation of air at a high flow rate when pipes are being filled ;

    (2)Intake of air at a high flow rate when pipelines are being drained (protection of the network against a pressure drop in the pipelines in the case of a main being broken) ;

    (3)Degassing at a low flow rate when in operation.

    WESDOM  advantages

    1. WESDOM patent products, patent certification
    The product side flanges comply with national, German, Russian, American, British and Japanese standards and other domestic and international standards for multiple pressures, easy connection and wide adaptability, which can reduce the type of purchase and stock.

    2. The product has an independent identity to ensure traceability
    Each wesdom product has its own unique identification number, to ensure product traceability.

    3. Provide material inspection report
    All wesdom products can provide the material inspection report of the main parts.

    4. One-stop service
    One-stop service, we not only supply high quality products, also supply solutions and after-sales service.

    5. WESDOM has a lot of project experience
    We have a lot of project experience in countries such as Pakistan and the Philippines, WESDOM has always been noticed all over the world, and trust comes from quality.

    Quality control process

    quality control process quality control process

    quality control process


    Double ball exhaust valve

    Technical parameters 
    Using the pressure 1.0M Pa
    Test pressure  1.5MPa 
    Applicable medium Clear water
    Suitable temperature Normal temperature
    Body CI
    Floating ball and stopper Stainless steel
    Main external and connecting dimensions(mm) Double Ball Air valve
    DN D D1 D2 L H Z-ød
    50 160 125 100 325 325 4-14
    80 195 160 135 325 325 4-14
    100 215 180 155 380 380 4-18
    125 245 210 185 475 475 8-18
    150 280 240 210 475 475 8-18
    200 335 295 265 580 5B0 8-23
    *The above specfications to be varied to suit your specific requirements.
    Main external and connecting dimensions(mm) Combined Air Vent Valve
    DN D D1 D2 L L1 H Z-ød
    25 115 85 65 235 180 355 4-14
    50 160 125 102 325 205 450 4-18
    80 195 160 138 365 235 500 4-18
    100 215 180 158 385 258 535 8-18
    Choose different specifications according to pipe diameter size of exhaust valve
    Size Water pipeø Size Water pipeø Size Water pipeø Size Water pipeø
    25 100-250 80 500-700 150 1200- 1500 250 2200- 2800
    50 300-450 100 800-1000 200 1600-2000 300 2800-3400

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