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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. General Pump

    MSZ 3Plex Plunger 46.0hp

    MSZ50

    $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" ...
  2. Oberdorfer Pumps

    Bronze Pedestal Gear Pump

    N9000S1

    $996.01
    Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the backpressure in the...
  3. General Pump

    MSZ 3Plex Plunger 46.0hp w/ gearbox

    MSZ5015R

    $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" ...
  4. Hypro Pumps

    Bronze gear pump

    GPBN5V

    $1,658.72
    20 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. 1/2Hp to 2HP motor required dep...
  5. General Pump

    MSZ 3Plex Plunger 55.5hp

    MSZ55

    $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" ...
  6. Hypro Pumps

    Bronze gear pump

    GPBN6V

    $1,355.72
    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.
  7. Oberdorfer Pumps

    N992R Gear Pump & Mtr

    N992RM-J07

    $1,485.77
    Rotary bronze gear pump with electric motor. 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 s...
    1/2Hp 115/230v ODP Learn More
  8. General Pump

    MSZ 3Plex Plunger 55.5hp w/ gearbox

    MSZ5515R

    $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. Hypro Pumps

    Bronze Rotary Gear pump

    GMBN5VB6

    $1,693.77
    Rotary Gear pump with electric motor. 303 SS fastners, Ryton gears. Heavy duty rotary external Gear pump, heavy duty with motor.

    Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discha...

    3/4" 2HP 115/230v Learn More
  10. Oberdorfer Pumps

    Bronze Pedestal Gear Pump

    N9000S15

    $1,247.81
    Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the backpressure in the...
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