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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. Oberdorfer Pumps

    N994 Gear Pump & Mtr.

    N994R-N75

    $1,848.60
    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 posit...

    12VDC Learn More
  2. Oberdorfer Pumps

    N994 Gear Pump w/brkt

    N994-37

    $1,717.30
    Gear Pump. Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Gear Pump KIT. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long service life.

    Gea...

  3. Hypro Pumps

    Hot Oil Gear Pump

    NG7V

    $3,802.32

    NG NSF Listed Industrial Gear Pump (OBSOLETE)

    The Hypro NG7V industrial gear pump is designed for non-abrasive, non-flammable liquids that are compatible with pump component materials. Ideal for fluid circulation, lubrication, pressure boosting, ...

  4. Aquatec Pumps

    Variable sp / constant PSI 115v

    5853-GB12-V81D

    $405.88
    Variable speed, constant pressure pumps. These pumps integrate a state-of-the-art digital controller. This unique intelligent controller makes the pumps able to maintain a constant pressure (within 2 PSI) for variable flow rates throughout thei...
    115v 1.2gpm 40 / 65psi Learn More
  5. Aquatec Pumps

    Variable sp / constant PSI 115v

    5853-GE12-V81D

    $405.88

    Variable speed, constant pressure pumps. These pumps integrate a state-of-the-art digital controller. This unique intelligent controller makes the pumps able to maintain a constant pressure (within 2 PSI) for variable flow rates throughout their o...

    1.2gpm 60 / 65psi 115v Learn More
  6. Oberdorfer Pumps

    18 GPM CI GEAR PUMP & PED

    18GB1111S

    $1,593.80
    Medium duty CI gear pump with relief valve and pedistal for long coupling. Mechanical sealed, bronze bearings. CW rotation.

    b>Features:

    1. Shafts: Ground and polished steel.
    2. Helical Gears: For quiet running.
    3. Housing: Of close grain cast iron. Three...
  7. Aquatec Pumps

    Spray pump

    5502-IDN2-V77D

    $405.88
    5502-1DN2-V77D Spray Pump. Variable speed, constant pressure pumps. These pumps integrate a state-of-the-art digital controller. This unique intelligent controller makes the spray pump able to maintain a constant pressure (within 2 PSI) for var...
    Variable speed 115v Learn More
  8. Aquatec Pumps

    Variable speed constant PSI 115v

    5501-IEN2-V77D

    $405.88

    Variable speed, constant pressure pumps. These pumps integrate a state-of-the-art digital controller. This unique intelegant controller makes the pumps able to maintain a constant pressure (within 2 PSI) for variable flow rates throughout their op...

  9. Aquatec Pumps

    Variable speed constant PSI 115v

    5501-2D01-V578

    $467.20
    Variable speed, constant pressure pumps. 3 min time out if no water present. These pumps integrate a state-of-the-art digital controller. This unique intelegant controller makes the pumps able to maintain a constant pressure (within 2 PSI) for ...
  10. Flojet Pumps

    Industrial Demand Pump

    2100-789

    $675.60
    Spray pump is a Duplex Diaphragm demand pump 115v. Use as a carpet cleaning machines, solar water pump or any other powered shower, sprinkler, misting system. Demand switch automatically turns the spray pump on and off when discharge valve is o...
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