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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

    Gas Rubber Impeller Pump

    405MG-03UGY

    $2,525.00

    Gas Engine Oberdorfer rubber (flex) impeller pump with solid cast bronze housing. Close coupled Rubber Impeller Pumps are made of high quality bronze for maximum corrosion resistance. The rubber impeller is mounted on a separate stainless steel sh...

    3HP engine 1" Learn More
  2. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor & relief valve

    N990RK-Y95

    $2,466.00
    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...
  3. 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
  4. General Pump

    TT 51 Triplex Plunger 2.9hp

    TT9071EBF

    $496.80
    TT Series 51, Triplex Plunger Pumps. Hollow Shaft, Flanged for Direct Couple to Electric Motors (NEMA-56C).
    • Forged brass manifold with exclusive lifetime warranty
    • Die cast, anodized aluminum, oil-bath crankcase
    • Solid ceramic plungers with contin...
  5. General Pump

    TT 51 Triplex Plunger 3.1hp

    TT9071EBFU

    $667.00
    TT Series 51, Triplex plunger pump, hollow shaft, flanged for direct couple to electric motors, with built-in unloader. Pump Only.
    • Forged brass manifold with exclusive lifetime warranty
    • Die cast, anodized aluminum, oil-bath crankcase
    • Solid ceram...
  6. General Pump

    TP 51 Triplex Plunger 3.3hp

    TP2024C17

    $582.80
    TP Series 51, Triplex plunger pump, hollow shaft, flanged for direct couple to electric motors (NEMA-56C). Forged brass manifold with an exclusive lifetime warranty. Ideal for all general cleaning and misting applications.
    • Die cast, anodized...
  7. Hypro Pumps

    316 Stainless Steel Gear pump

    GMSV6C7T

    $4,300.18

    Rotary Gear pump with motor. 316 Stainless construction, Ryton gears. 

    Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the back pressure in the discharge line. Shaft...

    3HP 230V TEFC Learn More
  8. Hypro Pumps

    316SS Gear pump end only

    GMSV6C

    $3,217.03
    Rotary Gear pump PEO pump end only. 303 SS fasteners, Ryton gears.

    Use for pressure spraying, circulation of lubricants, tank / drum filling. Will handle water like liquids to very thick. Bi-rotational allows for flow direction reversal. Flu...

  9. Barnes Pumps

    Sumbersible Grinder Pump

    SGV3042L

    $6,842.00

    Rugged and reliable SGV Series pumps provide continuous, maintenance-free operation while effectively handling objects such as plastic, rubber, disposable diapers, towels and clothing.

    2HP SGV Series Ideally suited for pressure sewer systems,...

    3hp, 460v/3phase Learn More
  10. General Pump

    T 49 Duplex Plunger 2.9hp Hollow Shaft

    T9731EBF

    $619.85
    T Series 49, Duplex Plunger Pump, Hollow Shaft, NEMA 56 C Flange for Direct Couple to Electric Motors - Duplex pump specifically designed for the demands of the water jetting industry. Forged brass manifold with an exclusive lifetime warranty.
    • S...
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