My Cart

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.
View as List Grid

Items 11-20 of 105

Set Descending Direction
per page
  1. Oberdorfer Pumps

    Bronze Rotary Gear Pump & Motor

    N61K10G-01F02

    $555.00
    PUMP AND MOTOR. No relief valve.

    This Bronze Rotary Gear Pump is popular among OEM users. It is a diesel fuel transfer pump featuring an all bronze design and 303 stainless steel shafts with options of non-metallic gears and a variety of sha...

  2. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor

    N990H-N26

    $1,751.00
    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. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor

    N990J-T47

    $1,871.00

    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 shaf...
    1-1/2HP 115/230v 1" Learn More
  4. Hypro Pumps

    Cast Iron Gear pump

    GMCV6VC7

    $2,587.51
    Rotary Cast Iron Gear pump 1" with electric motor. 303 SS fasteners, steel gears.

    Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discharge. Do not operate the relief valve for more ...

    3HP 230v/1 ODP 1" Learn More
  5. Oberdorfer Pumps

    N991 Oberdorfer PUMP & MTR.

    N991-F41

    $753.00
    Glycol circulation Pump by Oberdorfer is just one of hundreds of applications. 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 selec...
    1/3HP 115 Learn More
  6. Oberdorfer Pumps

    N991 Oberdorfer Bronze gear pump & motor

    N991-32F41

    $753.00
    Oberdorfer Bronze gear pump & motor. 3/8" 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 ser...
    115v 3/8" Learn More
  7. Hypro Pumps

    Cast Iron Gear pump

    GMCV5VA6

    $2,255.39
    Rotary Cast Iron Gear pump with electric motor. 303 SS fasteners, steel gears.

    Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discharge. Do not operate the relief valve for more than...

    2HP 115/230v ODP 3/4" Learn More
  8. Hypro Pumps

    316SS Gear pump

    GMSV4A4

    $2,956.66

    316SS Rotary Gear pump with 1HP motor. 303 SS fasteners, Ryton gears. Stainless steel gear pump for aggressive chemicals.

    Use for pressure spraying, circulation of lubricants, tank / drum filling. Will handle water like liquids to very thick. B...

    1/2" 1HP 115/230v Learn More
  9. Oberdorfer Pumps

    Bronze Rotary Gear Pump EXP

    N999S5-EXP

    $1,595.00
    1/2 gpm pump with EXPlosion proof motor.

    Features N999 Series:

    • Compact design eases installation and use in limited space hazardous areas.
    • Construction is bronze and stainless steel wetted components.
    • Close tolerance design allows for cons...
    Explosion Proof 1/4" Learn More
  10. Oberdorfer Pumps

    N991 Gear PUMP & motor reversible

    N991M-F07

    $989.00

    Reversible Gear PUMP & 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 service life. Pump ...

    115v/230v Reversible 1/4" Learn More
View as List Grid

Items 11-20 of 105

Set Descending Direction
per page