My Cart

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.

View as List Grid

Items 91-100 of 153

Set Descending Direction
per page
  1. All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump Bolted Series

    C150-FPK-TTKT-B70

    $9,879.18
    PVDF Kynar Air AODD Pump 3/4". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Replaces KT-15 Click here to Learn How to Size your Diaphragm Pum...
  2. All-Flo Pumps

    Conductive Nylon AODD Bolted Model

    C038-SQY-TT3T-SF0

    $1,092.69
    Diaphragm pump, Conductive Nylon. AODD pumps, 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 buil...
    3/8" Learn More
  3. All-Flo Pumps

    Double Diaphragm Pump Exp Cycle Count

    SE-05-A43-10E

    $2,016.30
    316 SS AODD Pump 1/2". Installed option Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Counting the number of cycles provides a method of measuring how much flui...
  4. All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    SV-10

    $2,627.69
    Stainless Steel AODD Pump 1". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Models available in PP, PVDF, Nylon, Conductive Nylon, Al and 316SS fr...
  5. All-Flo Pumps

    Nylon AODD Pump 1/4".

    RD-025B

    $563.00
    Nylon AODD Pump 1/4". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Models available in PP, PVDF, Nylon, Conductive Nylon, Al and 316SS from .25...
  6. All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    SP-10

    $3,862.65

    Stainless Steel AODD Pump 1".

    New PN A100-NA3-TT3T-B70   Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Inlet and outlet manifolds can be rotated s...

  7. Pulsafeeder

    Metering Pump 6 GPD/150 PSI

    LPA2SA-PTC1

    $928.53
    The Series E Plus offers manual control over stroke length andstroke rate.
    • 20 flow/pressure envelops
    • 100:1 turn down ratio
    • Auto-off-Manual selection switch with indicator lights
    • Built in fuse
    • Clear hinged cover over controls for water resistance...
  8. All-Flo Pumps

    Plastic Air Operated Diaphragm Pump

    A050-SPP-GGPN-S70

    $1,030.50
    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 Materi...
  9. All-Flo Pumps

    PP Air Operated Double Diaphragm Pump Bolted Series

    S038-SQP-GNPN-S70

    $634.49

    PolyPro Air AODD Pump 3/8". Max-Pass valve installed. Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Replaces previous model PB-038.  Click here to ...

  10. All-Flo Pumps

    PP Air Operated Diaphragm Pump

    PT-038

    $947.10
    PolyPro Air AODD Pump 3/8". C038-SQP-TTPT-S70 Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. For handling large size solids order the Max-pass v...
    3/8" PP/TFE Learn More
View as List Grid

Items 91-100 of 153

Set Descending Direction
per page