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    1" Air Operated Double Diaphragm Pump, 15 GPM

    Industrial air operated double diaphragm pump for sale at favorable price, 1 inch fluid inlet/outlet, 1/4 inch air inlet, 15 GPM, working pressure 100 PSI, max. suction lift 25 ft., max. air consumption 12 SCFM, driven by compressed air, non-metallic, aluminum alloy, cast steel, stainless steel body material available.
    SKU: T-AODD-25
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    Delivery date: 6-12 days

    Industrial 1 inch air operated double diaphragm pump is a highly efficient compact pneumatic tool that adopts reliable pilot operated type air valve. It is small in size and easy to move, perfect for various usages, such as pumping a variety of toxic, flammable, volatile liquid, acids, alkalis, corrosive liquids, paint, rubber and paint binders. AODD pump also can help you clean not only sewage and residual oil from cruises or barges, but also sediment contaminants in shaft, tunnel and sewers.


    • Air operated double diaphragm pump adopts pilot operated type air valve to eliminate the air tool downtime and extend its service life. All the parts can be replaced when the liquid chamber is not opened.
    • Designed with multiport, the pneumatic dual diaphragm pump can be installed easily.
    • It structures with non-porous embedded diaphragm to improve the usage rate of diaphragm and make it more compact.
    • Air powered diaphragm pump can be used as a movable-type material transfer pump because it has such advantages as small in size, easy moving, no need base, small occupied area and easy installation.
    • It can be externally connected to electromagnetic valve for remote control. And the reversing valve requires no lubrication.


    Model T-AODD-25
    Max. Flow 15 GPM (57 LPM)
    Max. Working Pressure 100 PSI (0.7 Mpa)
    Fluid Inlet Size 1 inch (DN25) NPT
    Fluid Outlet Size 1 inch (DN25) NPT
    Air Inlet Size 1/4 inch NPT
    Max. Suction Lift Dry Suction 15 ft. (4.5m)
    Wet Suction 25 ft. (7.6m)
    Max. Permitted Grain 3/32 in. (2.5mm)
    Max. Air Consumption 12 SCFM
    Every Stroke Flow 0.04 gal. (0.15L)
    Max. Reciprocating Speed 400 cpm
    Body Structure Material Cast Steel/Aluminum Alloy/Stainless Steel/Non-Metallic (Plastic)


    1 inch Air Operated Diaphragm Pump 15 gpm Details 1. Air valve cover
    2. Air valve cover O-ring
    3. Discharge outlet
    4. Colum
    5. Feed inlet
    6. Plug
    7. Small slider
    8. Auxiliary shaft
    9. Auxiliary shaft O-ring
    10. Piston
    11. Piston V-Ring
    12. Pitman shaft O-ring
    13. Air valve chamber gasket
    14. Baffle
    15. Inner clamp
    16. Poly rubber diaphragm
    17. PTFE diaphragm
    18. Outer clamp
    19. Sliding plate
    20. Sliding plate gasket
    21. Pitman shaft
    22. Air valve chamber
    23. Muffler
    24. Sealing ball
    25. Ball seat O-ring
    26. Sealing seat

    Diagram of Air Consumption

    1 inch Air Operated Diaphragm Pump 15 gpm Air Consumption

    Diagram of Fluid Flow

    1 inch Air Operated Diaphragm  Pump 15 gpm Fluid Flow

    Dimension Drawing

    Units: mm

    1 inch Air Operated Diaphragm Pump 15 GPM Dimension Drawing


    Air Operated Diaphragm Pump Applications

    Tips: Air Operated Double Diaphragm Pump Working Principle

    There installs each diaphragm in both aligned working cavities A & B of the AODD pump, which can be connected together with a central coupling lever. The compressed air enters the air distribution valve from the air entrance of the pneumatic diaphragm pump, draw the compressed air into one cavity through the air distribution mechanism, and push out the diaphragm movement in the cavity. The gas in another cavity will be drained. Once reaching the stroke terminal, the air distribution mechanism will automatically draw the compressed air into another working cavity, push out the diaphragm to move towards the opposite direction, so as to let the both diaphragms continuously reciprocate motion in synchronism. The compressed air enters the air distribution valve from E shown as the diagram, let the diaphragm piece move towards the right direction. And the suction force in A chamber lets the medium flow into from C entrance, push out the ball valve 2 to enter A chamber, the ball valve 4 will be locked due to the suction force; The medium in B chamber will be pressed, push out the ball valve 3 to flow out from the exit D. Meanwhile, let the ball valve 1 close, prevent backflow. Such movement in circles will let the medium uninterruptedly suck from C entrance and drain from D exit.

    Air Operated Double Diaphragm Pump Working Principle

    Existing reviews
    Mazhar 1/13/2021 6:35 AM
    Perfect air double diaphragm pump
    This is the second time I have purchased air double diaphragm pump. Previously, our company used a pump that was also purchased from It can not only transport materials, but also clean up contaminants deposited in shafts, tunnels and sewers, saving the company cleaning expenses.
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