My Cart

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.
View as List Grid

Items 1-10 of 33

Set Descending Direction
per page
Page
  1. Hypro GCCN33V Cast Iron Gear Pump 1/2

    Hypro Pumps

    Cast Iron Gear Pump 1/2"

    GCCN33V
    $940.81
    Cast Iron Gear pump close coupled to a 1/2 hp Carbonator type motor. Use with lubricating liquids only, not water based.
    115/230v 1/2HP Learn More
    Add to Wish List Add to Compare
  2. Hypro GCCN22V Cast Iron Gear Pump 1/4

    Hypro Pumps

    Cast Iron Gear Pump 1/4"

    GCCN22V
    $807.73
    Cast Iron Gear pump close coupled to a 1/3 hp Carbonator type motor. Includes adjustable relief valve. For lubricating liquids, not water.
    115v/230v Learn More
    Add to Wish List Add to Compare
  3. Little Giant 555110 Flexible impeller pump PP-1S

    Little Giant Pumps

    Flexible impeller pump PP-1S

    555110
    $224.54

    Non-Submersible, Self-Priming Stainless Steel Transfer Pump This lightweight, self-priming, portable pump with stainless steel pump head can be used to empty waterbeds, drain water heaters or aquariums, pump out a basement, transfer water to an...

    115v AC Learn More
    Add to Wish List Add to Compare
  4. Aquatec 8841-2J03-B421 RO Pump w/transformer

    Aquatec Pumps

    RO Pump w/transformer

    8841-2J03-B421
    $210.00
    Veg. misting or Pre-Filter water treatment RO Booster pump. In / Outlets are 1/4" push-to-connect JG style for easy installation into R.O. water supply line. Kit includes 24vac to 115vac transformer with plug and 20-40 psi pressure switch for use...
    Learn More
    Add to Wish List Add to Compare
  5. Aquatec 5503-1FE1-J526 5 chamber diaphragm pump

    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
    Add to Wish List Add to Compare
  6. Aquatec 5513-1E12-J526 5 chamber diaphragm pump

    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
    Add to Wish List Add to Compare
  7. Aquatec 5513-1E12-J606 5 chamber diaphragm pump

    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
    Add to Wish List Add to Compare
  8. Aquatec 5501-2D01-N526 5 chamber diaphragm pump

    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
    Add to Wish List Add to Compare
  9. Aquatec 5512-1F02-J526 Demand diaphragm pump

    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
    Add to Wish List Add to Compare
  10. Aquatec 5513-1E12-B606 5 chamber diaphragm pump

    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
    Add to Wish List Add to Compare
View as List Grid

Items 1-10 of 33

Set Descending Direction
per page
Page
Compare Products
  1. Remove This Item
Compare
Clear All
Shop By
Now Shopping by
  1. Category Rotary Pumps - Gear, Flexible Impeller, Screw Remove This Item
  2. Phase (Ø) Single (1) Remove This Item
  3. Motor TENV Remove This Item
Clear All
Shopping Options
Category
  1. Electric Diaphragm Pumps 21 items
  2. Chemical Feed Pumps 1 item
  3. Dry Running Pumps 21 items
  4. Variable Speed Pumps 19 items
  5. Mechanical Sealed Pumps 12 items
Voltage (Range)
  1. 110-120 22 items
  2. 110-120/220-240 6 items
  3. 220-240 4 items
  4. 12/24/36 VDC 1 item
Horse Power (HP)
  1. 1/4 1 item
  2. 1/3 1 item
  3. 1/2 2 items
  4. 1 1/2 1 item
  5. 2 1 item
inlet size
  1. Less than 1" 25 items
PRICE $
$  -  $