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Diaphragm Pumps

Diaphragm pump is a positive displacement pump that uses a combination of the reciprocating action of a rubber, thermoplastic or Teflon diaphragm and suitable non-return check valves to pump a fluid. Sometimes this type of pump is also called a membrane pump. A membrane made of elastomers or TFE, which flexes to produce pumping action. High viscosity liquids and solids ok.

The diaphragm is sealed with one side in the fluid to be pumped, and the other in air. The diaphragm is flexed, causing the volume of the pump chamber to increase and decrease. A pair of non-return check valves prevent reverse flow of the fluid.

Diaphragm pumps: have good suction lift characteristics, have good dry running characteristics, are low-shear pumps, can handle highly viscous liquids, cause a pulsating flow.

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  1. Flojet Pumps

    Explosion Proof beverage alcohol pump for high proof spirits

    G70C202A

    $926.00

    Flojet G70C202A Explosion-Proof Alcohol Pump


    Reliable, High-Performance Pump for High-Proof Beverages

    The Flojet G70C202A Little Explosion-Proof Alcohol Pump is specifically designed for high-proof beverage alcohol and other low flashpoint flamm...

    G70C ATEX Kalrez® Air Operated Diaphragm Pump for alcohol and high proof spirits Learn More
  2. All-Flo Pumps

    Air Diaphragm pump Stainless

    A050-NA3-VV3V-000

    $1,867.80

    Stainless Steel Diaphragm Air AODD Pump 1/2". 

    All-Flo pneumatic diaphragm pumps are used throughout industry, chemical, paints, solvents and paints. Standard (Suction Right / Discharge Right). Made in USA.

    Lube-free air valve, Non-stalling, No ...

    1/2" Stainless Learn More
  3. All-Flo Pumps

    Air Diaphragm pump Stainless

    A050-NA3-GT3N-S70

    $1,867.80

    Stainless Steel Diaphragm Air AODD Pump 1/2". 

    All-Flo pneumatic diaphragm pumps are used throughout industry, chemical, paints, solvents and paints. Standard (Suction Right / Discharge Right). Made in USA.

    Lube-free air valve, Non-stalling, No ...

    1/2" Stainless Geolast Learn More
  4. Flojet Pumps

    Duplex Diaphragm pump

    G573205A

    $345.00
    Glass filled Polypropylene double diaphragm pump with FKM diaphragms and check valve seats. Springs are Hastalloy.

    Connections are 3/8" straight. Air connection is 1/4" BARB brass. Air operated diaphragm pumps used for cleaning chemicals an...

    3/8" FKM Learn More
  5. Pulsafeeder

    Metering Pump - 30 GPD/80 PSI

    LC54SA-PTC1

    $642.00
    Our lowest cost model; Manual function control for stroke length; Highly reliable timing circuit; EMI resistant; Thermally protected solenoid with auto-reset, Bleed valve assembly. Four compact and rugged models with capacities up to 30 GPD @ 80 ...
  6. Flojet Pumps

    Demand Spray Pump

    LF152421

    $179.00
    Demand Spray Pump. Far and away the best selling pump in the industry. Choose from standard models or configure to meet the special needs of your OEM application. Long-life (2000 hours typical) motors have either a chemically resistant plastic ho...
    12vdc Learn More
  7. All-Flo Pumps

    PP Air Operated Double Diaphragm Pump

    A050-SPP-SSPE-S70

    $966.42
    PolyPro Air AODD Pump 1/2". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Click here to Learn How to Size your Diaphragm Pump and for a Mater...
  8. Pulsafeeder

    100 GPD/60 PSI Metering Pump

    100-XA-AAAAXXX

    $971.10
    100 GPD/60 PSI metering pump 115 vac. 70 strokes / minute max. 1.0 Amps full load.

    Dimensions: 6.75" x 8.875" x 7.25" (H x W x D)

  9. All-Flo Pumps

    Air Operated Double Diaphragm Pump Bolted Series

    A050-NAA-GGPN-S00

    $1,171.50

    Diaphragm Pump, Aluminum Air AODD Pump 1/2". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Click here to Learn How to Size your Diaphragm Pump and ...

  10. All-Flo Pumps

    Conductive Nylon AODD Pump

    CN-025B

    $513.15
    Although the air powered pump eliminates ignition from electrical motors and internal combustion engines when pumping flammable fluids there is still the possibility of static electrical charge build up on the outside of the pump. All-flo now p...
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