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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. All-Flo Pumps

    PP Air Operated Double Diaphragm Pump Bolted Series

    PV-10

    $1,659.69
    PolyPro Air 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. Click here to Learn How to Size your Diaphragm Pump and for a Material Se...
  2. All-Flo Pumps

    PP Air Operated Double Diaphragm Pump Bolted Series

    PV-15

    $4,089.74
    PolyPro Air AODD Pump 1.5". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical 3/4" air inlet. Click here to Learn How to Size your Diaphragm Pump a...
  3. All-Flo Pumps

    PP AODD Pump 1"

    C100-NPP-TTPT-G70

    $2,392.50
    PolyPro 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 from .25...
  4. All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump

    C050-SPK-VVKV-G70

    $2,005.26
    PVDF Kynar 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. Replaces KN-05 PVDF used in the KN model handles a wide range of chemic...
    1/2" Kynar Learn More
  5. All-Flo Pumps

    PP Air Operated Double Diaphragm Pump

    C050-SPP-VVPV-G70

    $1,274.55
    PolyPro 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. Models available in PP, PVDF, Nylon, Conductive Nylon, Al and 316SS from ....
    PolyPro FKM 1/2" Learn More
  6. All-Flo Pumps

    PP Air Diaphragm pump 1/2"

    C050-SPP-TTPT-G70

    $1,161.74

    PolyPro AODD Pump 1/2". Double diaphragm or air operated diaphragm pump. Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Model available in PP Click ...

  7. Flojet Pumps

    Diaphragm Pump 1.9GPM

    N5100050A

    $300.00
    Oil Resistant Acetyl Copolymer housing with Buna Elastomers. 5100-050A Flow rates to 1.9gpm and operating pressures 20 to 75psi, Duplex diaphragm design. Foam application. SALE!!!

    Max. air 80 PSI and .77 CFM For use on water like liquids.

    Buna Learn More
  8. Flojet Pumps

    Diaphragm Pump 1.9GPM

    N5100040

    $290.00
    Oil Resistant Acetyl Copolymer housing with Santoprene, FKM, Geolast and Buna Elastomers. Flow rates to 1.9gpm and operating pressures 20 to 75psi, Duplex diaphragm design. Foam application. SALE!!!

    Max. air 80 PSI and .77 CFM

    Neoprene Learn More
  9. Pulsafeeder

    Chemical Feed Pump

    LB02SA-PTC1

    $1,844.33
    Chemical Feed Pump, Metering pump. 5.76GPD The Pulsatron Series A Plus offers manual control over stroke length and stroke rate. Head mat'l is glass-filed PPL.
    • 4 distinct flow/pressure envelops
    • 100:1 turn down ratio
    • Internally dampened to reduce...
  10. Pulsafeeder

    Metering Pump

    LB64SA-PTC1

    $1,084.71
    Metering pump, Chemical Feed Pump. The Pulsatron Series A Plus offers manual control over stroke length and stroke rate. Head mat'l is glass-filed PPL.
    • 1.25 GPH 30GPD 4.7LPH
    • 1/4" ID tubing
    • 100:1 turn down ratio
    • Internally dampened to reduce nois...
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