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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. Oberdorfer N1000S3 Gear Fuel pump

    Oberdorfer Pumps

    Gear Fuel pump

    N1000S3
    $487.50
    1/4" Bronze rotary gear pump without relief valve. Used on simplex diesel fuel day tank. Replaces 1000B-28 and 1000B-19 Simplex diesel fuel sytems.
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  2. Hypro GCBN33V Bronze Gear pump 1/2 hp

    Hypro Pumps

    Bronze Gear pump 1/2 hp

    GCBN33V
    Call For Price
    Bronze Gear pump close coupled to a 1/2 hp Carbonator type motor. Bronze spur gears with 304 stainless steel shaft and carbon/graphite shaft supports. Standard pressure relief valves that can be ported internally or externallyand adjusted.

    She...

    3/8" 115v This Pump is no longer available. Please call us for possible alternatives Learn More
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  3. Hypro GCBN3 Bronze Gear pump Head

    Hypro Pumps

    Bronze Gear pump Head

    GCBN3V
    $1,000.00
    Bronze Gear pump head PEO. Will mount to a close coupled 1/2 hp Carbonator type motor. Bronze spur gears with 304 stainless steel shaft and carbon/graphite shaft supports. Standard pressure relief valves that can be ported internally or extern...
    3/8" Bronze Pump no motor Learn More
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  4. hypro gear pump bronze 1/4" GCBN22V

    Hypro Pumps

    Bronze Gear pump 1/3 hp

    GCBN22V
    $866.00
    Bronze Gear pump close coupled to a 1/3 hp Carbonator type motor. 115v

    Includes relief valve.

    115v 1/4" Learn More
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  5. Oberdorfer N990RH-N26 Bronze Rotary Gear Pump w/ motor relief valve

    Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor & relief valve

    N990RH-N26
    $2,455.70
    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 shaft by ...
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  6. Oberdorfer N61K10G-01C33 Bronze Rotary Gear Pump Motor

    Oberdorfer Pumps

    Bronze Rotary Gear Pump & Motor

    N61K10G-01C33
    $716.30
    PUMP AND MOTOR, no relief valve.

    This Bronze Rotary Gear Pump is popular among OEM users like generator Onan. 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...

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  7. Oberdorfer N61010GR-01F02 Bronze Rotary Gear Pump Motor R

    Oberdorfer Pumps

    Bronze Rotary Gear Pump & Motor R

    N61010GR-01F02
    $677.30
    PUMP AND MOTOR with 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 shaft s...

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  8. Oberdorfer N61K10G-01 Bronze Rotary Gear Pump End

    Oberdorfer Pumps

    Bronze Rotary Gear Pump End

    N61K10G-01
    $302.90
    PUMP END ONLY

    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 shaft.

    Special Features:

    • Bronze Body
    • Helical Gears for Quiet Operation
    • Self-...
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  9. Oberdorfer N92061GRC Bronze Rotary Gear Pump End

    Oberdorfer Pumps

    Bronze Rotary Gear Pump End

    N92061GRC
    $474.70
    PUMP END ONLY

    This Bronze Rotary Gear Pump is popular among OEM users. Gear Pump, RYT GRS, Carb mount. It is a diesel fuel transfer pump featuring an all bronze design and 303 stainless steel shaft.

    Special Features:

    • Bronze Body
    • Helical Ge...
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  10. Oberdorfer N990D1GOC Bronze Rotary Gear Pump PEO

    Oberdorfer Pumps

    Bronze Rotary Gear Pump PEO

    N990D1GOC
    $1,300.00
    Oberdorfer Close coupled bronze rotary gear pump end only. Contains Buna Mechanical Seal.
    • Bronze construction with SS shaft
    • Helical gears for quiet operation
    • Self-lubricating carbon bearings
    • O-ring seal for max. leak protection
    • Pump End On...
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