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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

    Bronze Rotary Gear Pump w/ motor

    N990K-Y97

    $3,221.40
    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 ...
  2. Hypro Pumps

    Cast Iron gear pump

    CCN2V

    $2,940.47
    Cast iron carbonator motor mount gear pump with adjustable relief valve. For oils and other lubricating liquids. Used on fryers. Not for use on water.
  3. General Pump

    T 69 Triplex Plunger 8.8hp

    TS1041

    $2,701.35
    T Series 69 Triplex Plunger Pump, Solid Shaft--The industry's choice for high-flow applications. Ball bearings and over sized connecting rods for maximum life.
    • Forged brass manifold with an exclusive lifetime warranty
    • Large Capacity Die-cast, an...
  4. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor

    N990L-Y98

    $3,879.20
    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...
  5. General Pump

    T 76 Triplex Plunger 11.7hp

    T61

    $7,253.63
    T Series 76, Triplex Plunger Pump, Solid Shaft--Forged brass manifold with an exclusive lifetime warranty. The industry's choice for high flow applications, over sized connecting rods for maximum life.
    • Large-capacity, die-cast, anodized aluminum...
  6. Hypro Pumps

    Cast Iron gear pump

    BPCV4V

    $2,973.40
    11 GPM Cast Iron pedestal mounted gear pump. For oils and other lubricating liquids. Not for use on water.
  7. All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump

    KN-5

    $1,971.59

    PVDF AODD Pump 1/2". All-Flo diaphragm pump has Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into. A050-SPK-TTKT-S70 Kynar pneumatic pump. All plastic air system are corrosion resistant. For pumping aggressive chemic...

    Kynar TFE 1/2" Learn More
  8. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor & relief valve

    N990RH-N76

    $3,506.10
    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...
  9. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor & relief valve

    N990RJ-T45

    $3,081.00
    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...
  10. General Pump

    T 76 Triplex Plunger 20.9hp

    T1551

    $8,967.82

    T Series 76, Triplex Plunger Pump, Solid Shaft- Obsolete

    -Forged brass manifold with an exclusive lifetime warranty. The industry's choice for high flow applications, over sized connecting rods for maximum life.

    • Large-capacity, die-cast, anodi...
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