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    4" Air Operated Double Diaphragm Pump, 150 GPM

    5 out of 5 based on 4 reviews | Write a review
    Heavy duty industrial air operated double diaphragm pump for sale, driven by compressed air, body material of cast steel, non-metallic, aluminum alloy and stainless steel available, 4 inch fluid inlet and outlet, 1/2 inch air inlet, air consumption 45 SCFM. Used for transport various corrosive liquids and high viscosity fluids.
    SKU: ATO-AODD-100
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Heavy duty AODD pump is easy to install and operate, which can be used for pumping toxic, flammable, high viscosity fluids, volatile liquid, acids, alkalis, corrosive liquids and paint binders.


    • Pneumatic dual diaphragm pump can transport high temperature media up to 130 ℃.
    • 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 T-QBYK3-100
    Max. Flow 150 GPM (568 LPM)
    Max. Working Pressure 120 PSI (0.84 Mpa)
    Fluid Inlet Size 4 inch (DN100) NPT
    Fluid Outlet Size 4 inch (DN100) NPT
    Air Inlet Size 1/2 inch NPT
    Max. Suction Lift(Dry Suction/Wet Suction) 18 ft. (5.48m)
    Max. Permitted Grain 1/4 in. (6.4mm)
    Max. Air Consumption 45 SCFM
    Every Stroke Flow 1.03 gal. (3.90L)
    Max. Reciprocating Speed 145 cpm
    Body Structure Material Option Cast Steel/Aluminum Alloy/Stainless Steel/Non-Metallic (Plastic)
    Diaphragm Material Butyronitrile (Default)/ Teflon (Customizable)
    Weight 83kg/ 42kg/ 60kg/ 40kg

    Dimensions (Unit: mm)

    Dimension Drawing of 4 inch Air Operated Double Diaphragm Pump

    Air Consumption Diagram

    Air Consumption Diagram of 4 inch Air Operated Double Diaphragm Pump

    Fluid Flow Diagram

    Fluid Flow Diagram of 4 inch Air Operated Double Diaphragm Pump


    Details of 4 inch Air Operated Double Diaphragm Pump

    1 Discharge outlet (top cover) 11 Sliding plate 22 Air valve chamber
    2 Sealing ball 12 Sliding plate gasket 23 Muffler
    3 Sealing seat 13 Plug 24 Pitman shaft sleeve
    4 Air valve cover gasket 14 Air valve chamber cover 25 Baffle
    5 Large slider aluminum piece 15 Auxiliary shaft cover 26 Column
    6 Piston 16 Auxiliary shaft O-ring 27 Clamp screw
    7 V-Ring 17 Auxiliary shaft 28 Outer clamp
    8 Small slider 18 Pitman shaft 29 PTFE diaphragm
    9 Large slider O-ring 19 V-Ring 30 Poly rubber diaphragm
    10 Large slider plastic ring 20 Piston sleeve 31 Inner clamp
    21 Air valve chamber gasket 32 Feed inlet (bottom cover)


    Applications of Air Operated Double Diaphragm Pump

    Tips: Air Operated Double Diaphragm Pump Applications

    Air operated double diaphragm pump can adopt Fluor rubber, PTFE, butadiene rubber, neoprene, polytetrafluoroethylene as diaphragm material according to different fluid media. The pneumatic dual diaphragm pump placed various special places used for pumping all kinds of media that conventional pumps can’t obtain satisfactory results. AODD Pumps apply to the following areas:

    • Sewage treatment: lime slurry, soft sediment, sewage, chemicals, waste water.
    • Petrochemical industry: crude oil, heavy oil, grease, mud, sludge.
    • Food industry: Liquid semi-solid, chocolate, salt water, vinegar, syrup, rapeseed oil, soybean oil, honey, animal blood, yeast, syrup, concentrate, gas-liquid mixture, wine, juice, corn syrup.
    • Construction industry: cement paste, ceramic tile binder, rock paste, ceiling finish.
    • Pharmaceutical industry: solvent, acid, alkali, plant extract liquid, ointment, plasma and other kinds of pharmaceutical materials liquid.
    • Metallurgy, casting and dyeing industries: hydroxide and carbonized pulp, metal pulp, dust washing pulp.
    • Furniture industry: dyeing agent, white wood glue, binder, varnish, dispersion system, solvent, epoxy resin, starch binder.
    • Coating industry: resin, solvent, colorant, paint.
    Existing reviews of 4" Air Operated Double Diaphragm Pump, 150 GPM
    Works great!
    I replaced an electric pump with this AODD pump. Even though I had to get an air compressor also. In the long run it is a way better pump that moves product and I don't need to worry about the impeller getting bound up.
    From: Osbourne | Date: 26/10/2022
    Was this review helpful? Yes No (0/0)
    I would purchase again.
    Great air operated double diaphragm pump for pumping hydraulic fluid. This aluminum pump is light weight yet delivers on performance. Good quality and performance make it a good value. I would purchase again.
    From: Duncan | Date: 27/06/2022
    Was this review helpful? Yes No (0/0)
    I definitely recommend.
    I definitely recommend. This AODD pump is very reliable for the price. I use this transfer pump all day long for very hot liquids and have yet to deal with any leaking. I will continue to go with this one. And I will buy more if I need.
    From: Alexander | Date: 23/05/2022
    Was this review helpful? Yes No (0/0)
    No problems so far.
    This 4 inch air operated diaphragm pump seems to be adequate at everything else you expect from a pump of this type. Very simple design, easy to use and durable. I use this pump all day long for very hot liquids and have yet to deal with any leaking. I definitely recommend.
    From: Alaska | Date: 25/04/2022
    Was this review helpful? Yes No (0/0)
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