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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. Flojet Pumps

    Quad Sensr VSD .5 hose barb

    R4400-503

    $257.50
    Flojet’s quad Variable Speed Drive (VSD) system needs no accumulator tank. Its microprocessor provides precise speed control to match the system demand. As more water is needed, the motor drives the pump for more flow. As the demand lessens, the ...
  2. Flojet Pumps

    Quad Sensr VSD .75 hose barb

    R4400-504

    $299.00
    Flojet’s quad Variable Speed Drive (VSD) system needs no accumulator tank. Its microprocessor provides precise speed control to match the system demand. As more water is needed, the motor drives the pump for more flow. As the demand lessens, th...
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  3. Aquatec Pumps

    115v Electric diaphragm pump

    5851-7E12-J574

    $197.00
    Electric diaphragm pump. 550 Series Super Flow Pump: These pumps are specifically designed for mobile low flow or low voltage applications such as water systems, ice makers, pesticides and fertilizers. Pressure switch set at 60 PSI. Connections a...
  4. Aquatec Pumps

    5 chamber diaphragm pump

    5503-1FE1-J526

    $198.00
    550 Series Super Flow Pump: Reverse Osmosis System Pump, High Powered RO/DI Reverse Osmosis Pump

    OPERATION: The 550 pumps can draw water from a holding tank and pressurize it, or boost the pressure from a low pressure source. It is designed to...

    5GPM 70PSI 115v Learn More
  5. Aquatec Pumps

    24v Elect. diaphragm pump

    5852-1F12-B423

    $193.00
    580 Series Super Flow Pump: These pumps are specifically designed for mobile low flow or low voltage applications such as RO water systems, pesticides and fertilizers. 24 VAC. Pressure switch set at 70 PSI. Connections are 3/8 " John Guest fittin...
  6. Aquatec Pumps

    5 chamber diaphragm pump

    5513-1E12-J526

    $199.00
    550 Series Super Flow Pump: 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 designed t...

    115v 5GPM 60psi Learn More
  7. Aquatec Pumps

    5 chamber diaphragm pump

    5513-1E12-J606

    $199.00

    550 Series Super Flow Pump: 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 designed to o...

    115v 6GPM 60psi Learn More
  8. Aquatec Pumps

    5 chamber diaphragm pump

    5501-2D01-N526

    $199.00
    550 Series Super Flow Pump: Great for water, paints, wine, soap and other liquids.OPERATION: The 550 pumps can draw water from a holding tank and pressurizeit, or boost the pressure from a low pressure source. It is designed to operate intermitte...
    3GPM 50PSI 115v Learn More
  9. Aquatec Pumps

    Demand diaphragm pump

    5512-1F02-J526

    $199.00
    550 Series Super Flow Pump: Water system, wash down, watering. 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 ...

    4gpm or 70psi Learn More
  10. Aquatec Pumps

    5 chamber diaphragm pump

    5513-1E12-B606

    $199.00
    550 Series Super Flow Pump: 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 designed t...

    115v Learn More
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