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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

    Bronze gear pump

    GPBN3V

    $1,610.51
    11 GPM Bronze pedestal mounted gear pump. For oils and other lubricating liquids. Excellent for water based fluids. Ryton PPS spur gears provide quiet operation and chemical compatibility. No metal to metal contact.
    1/2" Learn More
  2. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor & relief valve

    N990RH-N26

    $2,455.70
    Oberdorfer Close coupled bronze rotary gear pumps.
    • Bronze Construction with SS shaft
    • Helical gears for quiet operation
    • Self-lubricating carbon bearings
    • O-ring seal for max. leak protection
    • The pump drive shaft is connected to the motor shaft by ...
  3. General Pump

    MSZ 3Plex Plunger 29.2hp

    MSZ40

    $54,432.20
    MSZ Series, Triplex Plunger Pump, 316 SS Manifold and Wetted Parts, including Valve Plate and Seat.
    • Max. Inlet Pressure: 45 PSI
    • Max. Fluid Temp.: 140ï½°F
    • Inlet Port Thread: 2 1/2" NPT-F
    • Discharge Port Thread: 1 1/4" NPT-F
    • Pump Dimensions: 27.7" ...
  4. Hypro Pumps

    Carbonator-Mount Hot Oil

    GN60

    $2,160.49
    NSF Carbonator Close Coupled Gear Pumps, painted White epoxy paint. Hot Oil Cooking Pump Head, Fat Fryer / Filter, Recommended Motor HP 1/3. NSF paint Color White on outer surfaces. Steel gears.

    • Pumps can operate bi-directionally (15 PSI max....

    Pump Only Learn More
  5. General Pump

    MSZ 3Plex Plunger 29.2hp w/ gearbox

    MSZ4015R

    $55,214.26
    MSZ Series, Triplex Plunger Pump, 316 SS Manifold and Wetted Parts, including Valve Plate and Seat.
    • Max. Inlet Pressure: 45 PSI
    • Max. Fluid Temp.: 140ï½°F
    • Inlet Port Thread: 2 1/2" NPT-F
    • Discharge Port Thread: 1 1/4" NPT-F
    • Pump Dimensions: 27.7" ...
  6. Hypro Pumps

    Bronze gear pump

    GPBN4V

    $1,645.57
    11 GPM Bronze pedestal mounted gear pump. For oils and other lubricating liquids. Exellent for water based fluids. Ryton PPS spur gears provide quiet operation and chemical compatibility. No metal to metal contact.
    3/4" Learn More
  7. General Pump

    MSZ 3Plex Plunger 37.2hp

    MSZ45

    $54,432.20
    MSZ Series, Triplex Plunger Pump, 316 SS Manifold and Wetted Parts, including Valve Plate and Seat.
    • Max. Inlet Pressure: 45 PSI
    • Max. Fluid Temp.: 140ï½°F
    • Inlet Port Thread: 2 1/2" NPT-F
    • Discharge Port Thread: 1 1/4" NPT-F
    • Pump Dimensions: 27.7" ...
  8. General Pump

    MSZ 3Plex Plunger 37.2hp w/ gearbox

    MSZ4515R

    $55,214.26
    MSZ Series, Triplex Plunger Pump, 316 SS Manifold and Wetted Parts, including Valve Plate and Seat.
    • Max. Inlet Pressure: 45 PSI
    • Max. Fluid Temp.: 140ï½°F
    • Inlet Port Thread: 2 1/2" NPT-F
    • Discharge Port Thread: 1 1/4" NPT-F
    • Pump Dimensions: 27.7" ...
  9. All-Flo Pumps

    Nylon AODD Pump 1/4".

    RD-025B

    $563.00
    Nylon AODD Pump 1/4". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Models available in PP, PVDF, Nylon, Conductive Nylon, Al and 316SS from .25...
  10. All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    SV-10

    $2,627.69
    Stainless Steel AODD Pump 1". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Models available in PP, PVDF, Nylon, Conductive Nylon, Al and 316SS fr...
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