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Rotary Pumps - Gear, Flexible Impeller, Screw

These pumps have a set of rotating gears, flexible impellers, screw rotor or vanes connected to a driven shaft. Therefore most of these pumps incorporate a mechanical seal, packing or lip seal along the shaft at its back end in order to keep the fluid from leaking along the shaft. There are a few models, which are magnetically coupled and thus seal-less. Another type which is seal-less is the Peristaltic which uses a rotating roller assembly to compress a hose over a given arc length. These pumps are very reliable in pumping medium to thick liquids which typically are not handled by Centrifugal pumps and in applications where medium to high discharge pressures are needed at low flow rates. Varying the motor speed easily controls their output. Most units include some sort of built in relief valve, but those that do not must have one installed into the piping to prevent a dangerous over pressure condition. Not recommended for liquids with fine abrasives or thin non-lubricating liquids like water that will accelerate pump wear.Typical Positive Displacement Rotary pumps include helical gear, spur gear, lobe, progressive cavity, peristaltic, flexible impeller and sliding vane to name a few.
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  1. graco_260106.jpg

    Graco Pumps

    115v Electric APEX Oil Transfer pump

    260108 (TP16-15)
    Call For Price

    The PBL oil transfer pumps are designed specifically to transfer bulk oils and hydraulic fluids, motor oil, antifreeze. Larger horsepower electric motors with a smaller displacement gear pump assure adequate power to pump viscous fluids at low ...

    115V- 4.2gpm Learn More
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  2. Graco 260106 (TP9-15) 115v Electric APEX Oil Transfer pump

    Graco Pumps

    115v Electric APEX Oil Transfer pump

    260106 (TP9-15)
    $628.00

    The PBL oil transfer pumps are designed specifically to transfer bulk oils and hydraulic fluids, motor oil, antifreeze. Larger horsepower electric motors with a smaller displacement gear pump assure adequate power to pump viscous fluids at low ...

    115V- 3gpm Learn More
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  3. Graco 260105 (TP8-15) 115v Electric APEX Oil Transfer pump wall mount unit

    Graco Pumps

    115v Electric APEX Oil Transfer pump wall mount unit

    260105 (TP8-15)
    $633.00

    The PBL oil transfer pumps are designed specifically to transfer bulk oils and hydraulic fluids, motor oil, antifreeze. Larger horsepower electric motors with a smaller displacement gear pump assure adequate power to pump viscous fluids at low ...

    115V- 3gpm Learn More
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  4. 115v Electric Fuel Transfer pump by Graco GTP

    Graco Pumps

    115v Electric Fuel Transfer

    FP115
    $576.00
    Graco Model 260025 GTP10 Fuel Transfer Pumps Blue Devil have an efficient motor and gear design that allows for high output and with minimal current draw. They can easily be mounted on any tank design, on either side of the truck. OPTIONAL flo...
    Manual Leaded / Diesel 260025 Learn More
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  5. Graco FP24 Automatic 24v Electric Fuel Transfer 260021

    Graco Pumps

    24v Electric Fuel Transfer 260021

    FP24 Automatic
    $505.00
    24v Electric Fuel Transfer pump kit 260021, includes 260082 Regular gas / diesel nozzle with auto shut-off

    Features:

    • Manufacturer recognized and designed for gasoline, diesel fuel, kerosene and fuel oil (FP115). OPTIONAL flow meter available.
      • ...
    260021 Learn More
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  6. Oberdorfer N13HDM 1.5 Bronze gear pump

    Oberdorfer Pumps

    1.5" Bronze gear pump

    N13HDM
    $3,200.00
    1.5" Bronze rotary gear pump without relief valve. Pedestal mount pump only. Upper drive shaft location. See performance graph for flow rates vs motor RPM and HP. If used above 900 RPM, then duty cycle is limited to intermittent.
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  7. Oberdorfer N1100XN46 1.25 Bronze gear pump

    Oberdorfer Pumps

    1.25" Bronze gear pump

    N1100XN46
    $4,751.50
    1 1/4" Bronze rotary gear pump with relief valve and close coupled to a 1 HP ODP motor.

    Use to pump oil and other viscous thick liquids.

    1HP 115/230v ODP Learn More
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  8. Oberdorfer N1100 1.25 Bronze gear pump PEO

    Oberdorfer Pumps

    1.25" Bronze gear pump PEO

    N1100
    $2,470.00
    1 1/4" Bronze rotary gear pump with relief valve and to be close coupled to a 1 HP 56C to 3HP 182TC motors of electric or hydraulic type.

    Use to pump oil and other viscous thick liquids as well as diesel and all the de-icing fluids. Uses suc...

    NO motor Learn More
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  9. Oberdorfer N26HDM 2 Bronze gear pump

    Oberdorfer Pumps

    2" Bronze gear pump

    N26HDM
    $6,488.30
    Long coupled gear pump made of cast bronze. If used above 900 RPM with non-lubricating fluid, then duty cycle is limited to intermittent.

    Continuous duty on lubricating liquids like oils. Use slower speed motor at lower flow rates for water an...

    up to 170GPM Learn More
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  10. Oberdorfer N970H-N47 3/4 Bronze gear pump 1HP

    Oberdorfer Pumps

    3/4" Bronze gear pump 1HP

    N970H-N47
    $4,637.18
    3/4" Bronze rotary gear pump without relief valve and close coupled to a 1 HP 115v/1/60 1725 RPM TEFC motor.Pump housings and gears are made of top quality bronze, shafts are stainless steel 303. Bearings are made of high performance carbon-gra...
    115/230v ODP 1HP Learn More
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