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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

    Cast Iron gear pump

    BPCV3V

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

    PVDF Air Operated Double Diaphragm Pump

    KN-5E

    $1,759.44

    PVDF air operated double diaphragm pump. AODD Pump 1/2". All-Flo 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,...

    Kyner EPDM Santoprene Learn More
  3. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor & relief valve

    N990RJ-T96

    $2,652.00
    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...
  4. General Pump

    T 76 Triplex Plunger 26.3hp

    T4251

    $10,935.47
    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...
  5. All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump

    KN-10V

    $3,902.76
    PVDF 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 from .25” t...
  6. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor & relief valve

    N990RJ-W95

    $2,143.70
    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 shaf...
  7. General Pump

    T 77 Sixplex Plunger 24hp

    T121

    $11,308.99
    T Series 77 Sixplex Plunger Pump--Forged brass manifold with an exclusive lifetime warranty. Dual manifolds utilizing a common crankcase for efficient performance in high flow applications.
    • High flow applications
    • Dual manifolds utilizing a commo...
  8. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor & relief valve

    N990RL-Y96

    $3,556.80
    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 ...
  9. General Pump

    T 77 Sixplex Plunger 29.5hp

    T151

    $11,308.99
    T Series 77 Sixplex Plunger Pump--Forged brass manifold with an exclusive lifetime warranty. Dual manifolds utilizing a common crankcase for efficient performance in high flow applications.
    • High flow applications
    • Dual manifolds utilizing a commo...
  10. Oberdorfer Pumps

    N992 Pump & Mtr.

    N992S5Q-J97

    $1,480.05
    Bronze rotary 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...
    230/460v 1/2HP FKM Learn More
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