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    3/4" Air Operated Double Diaphragm Pump, 15 GPM

    5 out of 5 based on 4 reviews | Write a review
    Air operated double diaphragm pump can be used for pumping high viscosity fluids and corrosive liquids, with 3/4 inch fluid outlet and inlet, 1/4 inch air inlet, 15 GPM max. flow, working pressure up to 100 PSI, body material of non-metallic, aluminum alloy, cast steel, stainless steel available.
    SKU: ATO-AODD-20
    Free Shipping Worldwide
    Delivery date: 6-12 days

    Air powered double diaphragm pump is a high efficient pneumatic device that can be used for water purifier with BioFloc technology. This 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.


    • Pneumatic dual diaphragm pump can transport high temperature media up to 150 ℃.
    • Adopt pilot operated type air valve to eliminate the AODD pump downtime and extend its life span.
    • It is designed with multiport to help you install it easily.
    • 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 an electromagnetic valve for remote control. And the reversing valve requires no lubrication.


    Model ATO-QBYK-20
    Max. Flow 15 GPM (57 LPM)
    Max. Working Pressure 100 PSI (0.7 Mpa)
    Fluid Inlet Size 3/4 inch (DN20) NPT
    Fluid Outlet Size 3/4 inch (DN20) 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 Aluminum Alloy/ Cast Steel/ Non-Metallic (Plastic)/ Stainless Steel
    Diaphragm Material Butyronitrile (Default)/ Teflon (Customizable)
    Weight 6kg/ 10kg/ 5kg/ 10kg

    Dimensions (Unit: mm)

    Dimension Drawing of 3/4 inch Air Operated Diaphragm Pump

    Air Consumption Diagram

    Air Consumption Diagram of 3/4 inch Air Operated Diaphragm Pump

    Fluid Flow Diagram

    Fluid Flow Diagram of 3/4 inch Air Operated Diaphragm Pump


    Details of 3/4 inch Air Operated Diaphragm Pump

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


    Applications of Air Operated Double Diaphragm Pump

    Tips: What is an air operated double diaphragm pump?

    Air operated double diaphragm pump is given mane as pneumatic membrane pump that is a kind of positive displacement pump. AODD pump is also a kind of new conveyor, driven by compressed air, which can pump up a variety of corrosive liquids, liquids with particles, high viscosity, volatile, flammable and highly toxic liquids. They are made of four kinds of body materials, no-metallic (polypropylene), cast steel, aluminum alloy and stainless steel. According to different liquid media, the AOD pumps use different diaphragm materials to meet different users' needs. It can be placed in various special occasions used to pump a variety of conventional pumps that can’t pump suction medium.

    Existing reviews of 3/4" Air Operated Double Diaphragm Pump, 15 GPM
    Very pleased with this air diaphragm pump.
    Order stainless steel one due to the fact a friend had one and he raved about how great it was. Great looking and great working air operated diaphragm pump. It’s a good size and surprisingly lightweight for its heavy duty construction. We were able to lift it to where we needed it with no problems. Highly recommend.
    From: Cynthia | Date: 25/04/2022
    Was this review helpful? Yes No (0/0)
    Very easy to use for coolant, oil and fuel.
    This aluminum alloy air diaphragm pump is light weight but delivers on performance. It is very easy to use for coolant, oil and fuel. It is a strong and durable pump, good quality and good performance make it an excellent value, and I highly recommend it.
    From: Maria | Date: 19/05/2022
    Was this review helpful? Yes No (0/0)
    Great transfer pump.
    I received this AODD pump yesterday, it is a great transfer pump and it seems to be adequate at everything else you expect from a pump of this type. It has a good flow rate with no leaking. Very simple design, easy to use and robust.
    From: Marcus | Date: 25/05/2022
    Was this review helpful? Yes No (0/0)
    I want to buy this AODD pump.
    Is the stainless steel body material 308 or 316?
    From: Couchman | Date: 30/05/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    The stainless steel body is made of 304 or 316. Currently, only 304 stainless steel is compatible and available. In addition, 304 stainless steel material is currently in stock.
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