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 41-50 of 175

Set Descending Direction
per page
  1. Hypro Pumps

    Cast Iron Gear pump 3/8

    GMCV3VA4

    $1,826.07

    Rotary Cast Iron Gear pump 3/8". 303 SS fasteners, steel gears.

    Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discharge. Do not operate the relief valve for more than one minute.

    Use...

    1HP 3/8" Learn More
  2. Remco

    FatBoy Demand Diaphragm Pump

    5538-1E1-69C

    $412.56

    THE PROFLO FATBOY® PUMPS UP THE VOLUME WITH 7GPM. Demanding industrial pump environments require precise engineering and quality components. The ProFlo FatBoy® was designed with both. To maximize the potential of all five diaphragm chambers, Rem...

    7GPM 60PSI 115V NPT Demand Learn More
  3. Pulsafeeder

    115V digital metering pump 192 GPD/50 PSI

    LMK7KA-WTC3

    $2,034.00
    Chemical metering injection pump. True microprossor controled instrument for precise and accurate metering control. 190GPD / 7.9GPH flow max. Packed with standard features, it includes automatic control via 4-20mA or 20-4mA inputs, external pace ...
  4. Aquatec Pumps

    Hi-Flo Dem Pump

    5503-1E12-J526

    $198.00
    4.9 GPM 60PSI Demand delivery 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 operate intermittently, but most versions can run continuously f...
    5GPM 60PSI 115v Learn More
  5. Flojet Pumps

    Diaphragm Demand Pump

    4300-042

    $237.00
    Industrial QUAD pump - Developed to deliver higher flows up to 5 GPM using a four piston design with excellent self-priming capability. 04300-042A Built-in pressure switch automatically starts and stops pump at its 45 PSI setting.

    Santoprene...

    115v 3gpm FKM 40psi Learn More
  6. Pulsafeeder

    15 GPD/100 PSI Metering Pump

    015-XA-AAAAXXX

    $832.65
    15 GPD 100 PSI metering pump 115 vac. 25 strokes / minute max. Turn Down Ratio: 10:1
    CHEM-TECH Series 100 Metering Pump 15 GPD @ 100 PSI, 115 VAC Manual Control Stroke length is manually adjustable. See Specifications and Downloads tabs for de...
    115v 0.63GPH Learn More
  7. AMT Pumps

    2" Electric Diaphragm Trash Pump

    338E-96

    $3,140.00

    New model 338E-96 Powered by 1.5HP electric motor. AMT 2" Diaphragm pumps features 2-stage, 44 to 1 gear reduction with a large diameter output gear and heavy duty ball bearing construction. ALSO AVAILABLE IN 1-PHASE,115/230V Often referred to as ...

    1.5HP 115/230v Learn More
  8. Pulsafeeder

    24 GPD/100 PSI Metering Pump

    024-XA-BAAA7XXX

    $836.55
    Chem-Tech Series 100 & 150 positive displacement, Chem-Tech diaphragm pumps are respected by professionals around the world for dependability, easy maintenance and versatility in a wide range of water treatment applications.

    24 GPD 100 PSI met...

  9. Graco Pumps

    230v Electric APEX Oil Transfer pump

    260104

    $800.00

    The PBL oil transfer pumps are designed specifically to transfer bulk oils and hydraulic fluids, motor oil, antifreeze. Larger horsepower electric motors with a smaller displacement gear pump assure adequate power to pump viscous fluids at low ...

    230V - 4.25gpm Learn More
  10. Graco Pumps

    115v Electric APEX Oil Transfer pump

    260109 (TP32-15)

    $620.00

    The PBL oil transfer pumps are designed specifically to transfer bulk oils and hydraulic fluids, motor oil, antifreeze. Larger horsepower electric motors with a smaller displacement gear pump assure adequate power to pump viscous fluids at low ...

    115V- 7.9gpm Learn More
View as List Grid

Items 41-50 of 175

Set Descending Direction
per page