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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

    H Series Sanitary & Hygienic

    H050-THL-PTTT-G70

    $5,247.00
    1/2” (13mm) HDPE/ Polished 316L Stainless Steel. Suction lift capability may vary depending on the construction materials and application parameters. The range is from 16.4 feet dry to 30 feet in a primed condition. Tri Clamp Click here to ...
  2. All-Flo Pumps

    PP Air Operated Double Diaphragm Pump

    C150-FPP-SSPE-B70

    $3,980.19
    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, pneumatic pump for chemicals. Click here to Learn How to Size your D...
  3. All-Flo Pumps

    Nylon Air Operated Double Diaphragm Pump

    A025-SPK-TTKV-S70

    $877.19
    Nylon Air 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. Replaces RDD-025 Models available in PP, PVDF, Nylon, Conductive Nylon, ...
    1/4" Learn More
  4. All-Flo Pumps

    Aluminum Air Operated Diaphragm Pump

    A150-NAA-GGPN-B30

    $2,163.51
    Aluminum AODD Pump 1 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 fro...
    Geolast Diaphragm 1.5" Learn More
  5. All-Flo Pumps

    Air Operated 3" Diaphragm Pump

    A300-NAA-GGNN-000

    $4,037.55
    Aluminum AODD Pump 3". 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 .2...
    Aluminum Nitrile Learn More
  6. All-Flo Pumps

    Air Diaphragm pump Aluminum

    A100-NAA-TTYT-B30

    $2,800.50
    Aluminum 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 Materi...
  7. All-Flo Pumps

    Kynar Air Operated Double Diaphragm Pump

    A100-FPK-TTKT-S70

    $3,660.32

    Kynar PVDF Air AODD Pump 1/4". Air operated Diaphragm pump. Suitable for strong acids and bases. Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Repl...

    1" KT-10 Kynar Teflon Learn More
  8. All-Flo Pumps

    PolyPro 1" Air Operated Double Diaphragm Pump

    A100-FPP-SSPE-S70

    $1,737.56

    PolyPro Air AODD Pump 1". Chemical double diaphragm pump made in USA. Featuring All-Flo's 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 PE...

    1" PE-10 PolyPro Santo Learn More
  9. All-Flo Pumps

    PolyPro Air Operated Double Diaphragm Pump

    A100-FPP-GGPN-S70

    $2,857.80

    PolyPro Air AODD Pump 1", Geolast diaphragm. Chemical double diaphragm pump made in USA. Featuring All-Flo's Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-elec...

    1" PE-10 PolyPro Geolast Learn More
  10. All-Flo Pumps

    PolyPro Air Operated Double Diaphragm Pump

    A100-FPP-TTPT-S70

    $2,143.32

    PolyPro Air AODD Pump 1", PTFE diaphragm. Chemical double diaphragm pump made in USA. Featuring All-Flo's Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electri...

    1" PE-10 PolyPro PTFE Learn More
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