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 371-380 of 414

Set Descending Direction
per page
  1. Pulsafeeder

    METRING PUMP 600GPD/30 PSI

    LPH8MA-PTCB

    $3,596.82
    The Series E Plus offers the option to choose between4-20mAfor external pace inputs for automatic control.
    • 20 flow/pressure envelops
    • 100:1 turn down ratio
    • Optional 4-20mA with stop function
    • Optional External Pacing with stop function
    • Auto-off-Ma...
  2. Flojet Pumps

    Diaphragm Pump 1.9GPM

    N5100050A

    $300.00
    Oil Resistant Acetyl Copolymer housing with Buna Elastomers. 5100-050A Flow rates to 1.9gpm and operating pressures 20 to 75psi, Duplex diaphragm design. Foam application. SALE!!!

    Max. air 80 PSI and .77 CFM For use on water like liquids.

    Buna Learn More
  3. Flojet Pumps

    Diaphragm Pump 1.9GPM

    N5100040

    $290.00
    Oil Resistant Acetyl Copolymer housing with Santoprene, FKM, Geolast and Buna Elastomers. Flow rates to 1.9gpm and operating pressures 20 to 75psi, Duplex diaphragm design. Foam application. SALE!!!

    Max. air 80 PSI and .77 CFM

    Neoprene Learn More
  4. Pulsafeeder

    Chemical Feed Pump

    LB02SA-PTC1

    $1,844.33
    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...
  5. Pulsafeeder

    Metering Pump

    LB64SA-PTC1

    $1,084.71
    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...
  6. PumpBiz

    Hypro Roller Pump

    6500C

    $1,233.00
    Hypro® SherTech® NR 6500 Series roller pumps generate high pressures at low flow rates. Their compact, self-priming design and their ability to handle abrasives make them a efficient solution for a wide variety of challenging applications.

    Hy...

  7. Aquatec Pumps

    115v Electric diaphragm pump

    5850-7E12-J574

    $281.78
    Electric diaphragm pump. These pumps are specifically designed for mobile low flow or low voltage applications such as Expreso coffee, water systems, ice makers, pesticides and fertilizers. Pressure switch set at 60 PSI. Connections are 3/8 " Joh...
  8. PumpBiz

    Roller Pump Ni-Resist

    6500N

    $1,014.00
    Hypro® SherTech® NR 6500 Series roller pumps generate high pressures at low flow rates. Their compact, self-priming design and their ability to handle abrasives make them a efficient solution for a wide variety of challenging applications.

    Hy...

  9. PumpBiz

    Roller Pump Silvercast

    6500XL

    $3,658.30
    Hypro® SherTech® NR 6500 Series roller pumps generate high pressures at low flow rates. Their compact, self-priming design and their ability to handle abrasives make them a efficient solution for a wide variety of challenging applications.

    Hy...

  10. Pulsafeeder

    METERING PUMP 24GPD/100 PSI

    LPB4MA-PTC1

    $1,261.98
    The Series E Plus offers the option to choose between4-20mAfor external pace inputs for automatic control.
    • 20 flow/pressure envelops
    • 100:1 turn down ratio
    • Optional 4-20mA with stop function
    • Optional External Pacing with stop function
    • Auto-off-Ma...
View as List Grid

Items 371-380 of 414

Set Descending Direction
per page