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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. Hypro Pumps

    Cast Iron Pedestal Gear Pump

    C6K

    $1,634.69
    Cast Iron Pedestal Gear Pump, light duty with grease zerks that requires greasing. NO relief valve.

    Self-priming, positive displacement, external rotary gear pumps are ideal for a wide range of light-duty industrial, marine, agricultural, and ...

    1" Cast Iron Learn More
  2. General Pump

    LHZ 3Plex Plunger 49hp

    LHZ5015

    $86,534.91
    LHZ Triplex Plunger Pump with Internal Gear Reduction. A heavy-duty industrial pump with a 316 stainless steel manifold for desalination and other corrosive applications.
    • Max. Inlet Pressure: 45 PSI
    • Max. Fluid Temp.: 140ï½° F
    • Inlet Port Thread: ...
  3. General Pump

    LHZ 3Plex Plunger 56.8hp

    LHZ5017

    $86,534.91
    LHZ Triplex Plunger Pump with Internal Gear Reduction. A heavy-duty industrial pump with a 316 stainless steel manifold for desalination and other corrosive applications.
    • Max. Inlet Pressure: 45 PSI
    • Max. Fluid Temp.: 140ï½° F
    • Inlet Port Thread: ...
  4. Hypro Pumps

    Cast Iron Pedestal Gear Pump

    C6V

    $1,821.38

    Cast Iron Pedestal Gear Pump 1"

    without relief valve.

    Self-priming, positive displacement, external rotary gear pumps are ideal for a wide range of light-duty industrial, marine, agricultural, and commercial applications, providing a nearly puls...

    Frame mount 1" Learn More
  5. General Pump

    LHZ 3Plex Plunger 59.3hp

    LHZ5515

    $86,534.91
    LHZ Triplex Plunger Pump with Internal Gear Reduction. A heavy-duty industrial pump with a 316 stainless steel manifold for desalination and other corrosive applications.
    • Max. Inlet Pressure: 45 PSI
    • Max. Fluid Temp.: 140ï½° F
    • Inlet Port Thread: ...
  6. All-Flo Pumps

    PP Air Operated Double Diaphragm Pump

    A050-SPP-TTPT-S70

    $1,234.50
    PolyPro / Teflon Air AODD Pump 1/2". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. For handling large size solids order the Max-pass valve under...
    PolyPro / Teflon 1/2" Learn More
  7. General Pump

    LHZ 3Plex Plunger 69.2hp

    LHZ5517

    $86,534.91
    LHZ Triplex Plunger Pump with Internal Gear Reduction. A heavy-duty industrial pump with a 316 stainless steel manifold for desalination and other corrosive applications.
    • Max. Inlet Pressure: 45 PSI
    • Max. Fluid Temp.: 140ï½° F
    • Inlet Port Thread: ...
  8. Oberdorfer Pumps

    Bronze Rotary Gear Pump EXP

    N999-spec

    $1,560.00
    1/2 gpm diesel oil pump with EXP motor.

    Features N999 Series:

    • Compact design eases installation and use in limited space areas.
    • Construction is bronze and stainless steel wetted components.
    • Close tolerance design allows for consistent perf...
  9. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ relief valve

    N991R-F41

    $1,056.90
    Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbongraphite material selected for wear resistance and long service life. Gear pumps are positive displacement p...
  10. General Pump

    LHZ 3Plex Plunger 70.9hp

    LHZ6015

    $86,534.91
    LHZ Triplex Plunger Pump with Internal Gear Reduction. A heavy-duty industrial pump with a 316 stainless steel manifold for desalination and other corrosive applications.
    • Max. Inlet Pressure: 45 PSI
    • Max. Fluid Temp.: 140ï½° F
    • Inlet Port Thread: ...
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