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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.

Positive Displacement Pumps

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Items 1 to 10 of 1045 total

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  1. Marco Mate

    Oil Transfer Pump UP14/Oil

    M164-520-12

    Oil transfer gear pump, 12V DC.4.0 GPM Self-priming electric pump with helical bronze gears for transferring lubricating oils and viscous liquids. Nickel-plated brass body and stainless steel shaft. Particularly suitable for draining engine sumps ...

    4gpm 290GPH 12v
  2. Oberdorfer

    N994 12v DC Gear Pump

    N994H-H75

    12v DC Gear Pump. Pump housings and gears are made of top quality bronze;
    shafts are from stainless steel 303. Bearings are designed of high
    performance carbon-graphite material selected for wear resistance
    and long service life.

    12 volt Gear ...

    1HP 12VDDC
  3. Marco Mate

    Oil Transfer Pump UP6

    M164-080-12

    12v DC Oil transfer gear pump. GPM Self-priming electric pump with helical bronze gears for transferring lubricating oils and viscous liquids. Nickel-plated brass body and stainless steel shaft. Particularly suitable for draining engine sumps wit...

    4gpm 290GPH 12v
  4. Oberdorfer

    N992 Pump & Mtr.

    N992-F41

    Bronze gear pump. Pump housings and gears are made of top quality bronze; shafts are
    from stainless steel 303. Bearings are designed of high performance
    carbon-graphite material selected for wear resistance and long
    service life. Motor may not ...
    1/3HP 115v
  5. Oberdorfer

    N993 Bronze Pump & Motor

    N993M-J07


    Bronze Gear pump. Pump housings and gears are made of top quality
    bronze; shafts are from stainless steel 303. Bearings are designed
    of high performance carbon-graphite material selected for wear
    resistance and long service life.

    Gear pumps are p...

    1/2 HP 115v
  6. Stenner

    Adj. mechanical feed rate, Dual head Dual control 50GPD

    100MDC5


    G.H. Stenner & Company offers a complete line of highly
    reliable peristalic chemical feeders. Use for grease trap enzymes,
    algaecide, biocide, biocidal, antimicrobial, chlorination -
    chlorine sanitizers and disinfectants injection, cooling towers...
  7. Stenner

    Peristaltic Injection Pump 40GPD

    85MJL3A1S

    PATENTED MECHANICAL CONTROL – Stenner’s
    unique control mechanism allows the peristaltic metering injection
    pump’s output to be scaled from. 5% to 100% with the
    simple turn of a dial. This eliminates the need for troublesome
    electronic timers.
    ...
    85M3-120-1/4 85m3
  8. Stenner

    Single Head Adjustable Peristaltic Pump

    85MJL1A1S


    Peristaltic Pump – Stenner’s unique
    control mechanism allows the peristaltic metering injection
    pump’s output to be scaled from. 5% to 100% with the
    simple turn of a dial. This eliminates the need for troublesome
    electronic timers.

    PERISTALTIC AD...

    85M1-120-1/4
  9. Flojet

    Duplex Diaphragm pump V

    G573205A


    Glass filled Polypropylene double diaphragm pump with Viton
    diaphragms and check valve seats. Springs are Hastalloy.

    Connections are 3/8" straight. Air connection is 1/4" BARB
    brass.SALE!!!



  10. Stenner

    High Pressure Peristaltic Pump 40GPD

    85MHP40-120-1/4


    PATENTED MECHANICAL CONTROL – Stenner’s
    unique control mechanism allows the pump’s output to
    be scaled from. 5% to 100% with the simple turn of a dial. This
    eliminates the need for troublesome electronic timers.

    HIGH PRESSURE HANDLING – Stenner m...

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Items 1 to 10 of 1045 total

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