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Positive Displacement Pumps

These pumps are often thought of as high-pressure pumps. Their positive displacement of fluid and fixed volume are the result of the fluid being mechanically moved through their pump passage on a regular cycle. This means that regardless of the system they discharge into, the pressure and volume will remain constant. The power of the driving device and its speed, limit the volume and pressure.Positive Displacement pumps:Flow rates of GPD, CC/min to 100 GPM typically.Discharge pressures of a 1 to 1000 PSI.Low speed and fixed volume per cycle, they handle very viscid fluids well.Smaller than centrifugal pumps.Quiet, do not ad much heat to the fluid, suitable for shear sensitive fluids.Diaphragm pumps can easily pass solids, stringy and fibrous foreign matter. Are made in materials from CI to Titanium and PP, PVDF and PPS engineering resins.
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  1. PumpBiz

    WOBBLE STATOR PUMP & 3 phase MOTOR

    APM-15SSBM-3

    $4,968.93
    Liberty Pumps are backed by over fifty years of progressive cavity pump product sales and technical service experience. American Pump Series Progressive Cavity Pumps are designed with a singular helical rotor that eccentrically turns within a dou...
  2. PumpBiz

    WOBBLE STATOR PUMP & 3 phase MOTOR

    APM-15SSFM-3

    $7,067.13
    Liberty Pumps are backed by over fifty years of progressive cavity pump product sales and technical service experience. American Pump Series Progressive Cavity Pumps are designed with a singular helical rotor that eccentrically turns within a dou...
  3. PumpBiz

    WOBBLE STATOR PUMP & 3 phaseMOTOR

    APM-33CSFM-3

    $4,387.78
    Liberty Pumps are backed by over fifty years of progressive cavity pump product sales and technical service experience. American Pump Series Progressive Cavity Pumps are designed with a singular helical rotor that eccentrically turns within a dou...
  4. Flojet Pumps

    Air Diaphragm pump

    G575215A

    $214.51

    Air driven, pneumatic pump. Glass filled Polypropylene double diaphragm pump with Santoprene diaphragms and EPDM check valve seats. Springs are Hastalloy. Often used on water cooling circuit for spot welders. Coolant pump replacement weilander tim...

  5. Aquatec Pumps

    Ag 115v Diaphragm Pump

    5502-2F77-M526

    $527.06
    Aquatec 550 Series Super Flow Pump: These pumps are specifically designed for Ag applications such as MOSQUITO pesticides and fertilizers.
    • OPERATION: The 550 pumps can draw water from a holding tank and pressurize it, or boost the pressure from ...
    4GPM 70psi Learn More
  6. Aquatec Pumps

    5 chamber diaphragm pump 230V

    5513-1E12-B706

    $290.54
    550 Series Super Flow Pump: 230V Reverse Osmosis System Pump, High Powered RO / DI Reverse Osmosis Pump

    OPERATION: The 550 pumps can draw water from a holding tank and pressurizeit, or boost the pressure from a low pressure source. It is desig...

  7. Aquatec Pumps

    5 chamber diaphragm pump 230

    5503-1FE1-B706

    $289.08
    550 Series Super Flow Pump: Reverse Osmosis System Pump, High Powered RO / DI Reverse Osmosis Pump. Quad QD ports. Order fittings seperately.

    OPERATION: The 550 pumps can draw water from a holding tank and pressurizeit, or boost the pressure from...

  8. Flojet Pumps

    Air Diaphragm pump

    G573208

    $357.40
    Air driven, pneumatic pump. Glass filled Polypropylene double diaphragm pump with FKM diaphragms and check valve seats. Springs are Hastalloy.

    Connections are 3/8" HB straight. Air connection is 1/4" HB PLASTIC.

  9. Flojet Pumps

    Diaphragm pump

    G575205

    $214.51
    Air driven, pneumatic pump. Sale price as listed above.Glass filled Polypropylene double diaphragm pump with Santoprene diaphragms and EPDM check valve seats. Springs are Hastalloy.

    Connections are 3/8" straight. Air connection is 1/4" brass.

    ...
    3/8" Santoprene Learn More
  10. Flojet Pumps

    Duplex Diaphragm pump

    G575175

    $214.51
    Flojet double diaphragm pump with Santoprene diaphragms and EPDM check valve seats. Springs are Hastalloy.

    Connections are 1/2" MNPT. Air connection is 1/4" HB brass.

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