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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. Pulsafeeder

    Metering Pump - 30 GPD/80 PSI

    LC54SA-PTC1

    $642.00
    Our lowest cost model; Manual function control for stroke length; Highly reliable timing circuit; EMI resistant; Thermally protected solenoid with auto-reset, Bleed valve assembly. Four compact and rugged models with capacities up to 30 GPD @ 80 ...
  2. Pulsafeeder

    Metering Pump 6 GPD/150 PSI

    LPA2SA-PTC1

    $928.53
    The Series E Plus offers manual control over stroke length andstroke rate.
    • 20 flow/pressure envelops
    • 100:1 turn down ratio
    • Auto-off-Manual selection switch with indicator lights
    • Built in fuse
    • Clear hinged cover over controls for water resistance...
  3. Pulsafeeder

    Chemical Metering Pump

    LB04SA-PTC1

    $1,291.08
    Chemical metering pump. 25GPD The Series A Plus offers manual control over stroke length and stroke rate. Head mat'l is glass-filed PPL.
    • 4 distinct flow/pressure envelops
    • 100:1 turn down ratio
    • Internally dampened to reduce noise - ideal f...
  4. Riverside

    2" Electric Diaphragm Pump

    DP2E

    $1,798.00

    Riverside Pumps' rugged and reliable Diaphragm Pumps are sometimes called "mudhogs" for their ability to pump heavy mud and sludge, thicker than any centrifugal pump can handle. Electric motor Diaphragm Pump also have the advantage of being able t...

    Electrci diaphragm pump Learn More
  5. Riverside

    3 in. Electric diaphragm pump

    DP3E

    $1,863.00

    Riverside Pumps' rugged and reliable Diaphragm Pumps are sometimes called "mudhogs" for their ability to pump heavy mud and sludge, thicker than any centrifugal pump can handle. They also have the advantage of being able to run dry without damage,...

    115/230v Learn More
  6. 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
  7. Pulsafeeder

    Metering Pump - 12 GPD/80 PSI

    LC03SA-VVC9

    $778.05
    PULSAtron Series C with External pacing & degassing Head Assembly with momentary prime switch; Highly reliable timing circuit; EMI resistant; Thermally protected solenoid with auto-reset, Bleed valve assembly. Compact and rugged model with cap...
    12GPD 1/2GPH Manual Learn More
  8. Pulsafeeder

    Chemical Feed Pump

    LB02SA-PTC1

    $1,263.24
    Chemical Feed Pump, Metering pump. 5.76GPD The Pulsatron Series A Plus offers manual control over stroke length and stroke rate. Head mat'l is glass-filed PPL.
    • 4 distinct flow/pressure envelops
    • 100:1 turn down ratio
    • Internally dampened to reduce...
  9. Pulsafeeder

    Metering Pump

    LB64SA-PTC1

    $742.95
    Metering pump, Chemical Feed Pump. The Pulsatron Series A Plus offers manual control over stroke length and stroke rate. Head mat'l is glass-filed PPL.
    • 1.25 GPH 30GPD 4.7LPH
    • 1/4" ID tubing
    • 100:1 turn down ratio
    • Internally dampened to reduce nois...
  10. Pulsafeeder

    Metering Pump 12 GPD/100 PSI

    LPA3SA-PTC1

    $815.67
    The Series E Plus offers manual control over stroke length andstroke rate.
    • 20 flow/pressure envelops
    • 100:1 turn down ratio
    • Auto-off-Manual selection switch with indicator lights
    • Built in fuse
    • Clear hinged cover over controls for water resistance...
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