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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. Hypro GMCV5VA6 Cast Iron Gear pump

    Hypro Pumps

    Cast Iron Gear pump

    GMCV5VA6
    $1,244.00
    Rotary Cast Iron Gear pump 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 than...

    2HP 115/230v ODP 3/4" Learn More
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  2. 316SS Gear pump

    Hypro Pumps

    316SS Gear pump

    GMSV4A4
    $1,735.68

    316SS Rotary Gear pump with 1HP motor. 303 SS fasteners, Ryton gears. Stainless steel gear pump for aggressive chemicals.

    Use for pressure spraying, circulation of lubricants, tank / drum filling. Will handle water like liquids to very thick. B...

    1/2" 1HP 115/230v Learn More
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  3. Hypro GMSV4A 316SS Gear pump

    Hypro Pumps

    316SS Gear pump

    GMSV4A23
    $1,735.68

    316SS Rotary Gear pump with 1HP motor. 303 SS fasteners, Ryton gears. Stainless steel gear pump for aggressive chemicals.

    Use for pressure spraying, circulation of lubricants, tank / drum filling. Will handle water like liquids to very thick. B...

    1/2HP, 3phase Learn More
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  4. Hypro GMCV3VA Cast Iron Gear pump 1hp 3/8"

    Hypro Pumps

    Cast Iron Gear pump 3/8

    GMCV3VA4
    $1,114.00

    Rotary Cast Iron Gear pump 3/8". 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 than one minute.

    Use...

    1HP 3/8" Learn More
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  5. Hypro GCCV22V Gear Pump 1/4" Cast Iron Motor Mounted Gear Pump

    Hypro Pumps

    Cast Iron Motor Mounted Gear Pump

    GCCV22V
    $999.00
    Cast Iron Gear pump close coupled to a 1/2 hp Carbonator type motor. Steel spur gears with steel shaft and CI shaft supports. Standard pressure relief valves that can be ported internally or externallyand adjusted.

    Shertech self-priming, positive...

    115v CI Learn More
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  6. 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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  7. 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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  8. Hypro GN63 Hot oil pump Fat Fryer Cooking Oil Pump

    Hypro Pumps

    Fat Fryer Cooking Oil Pump

    GN63
    $3,246.52
    Hot Oil Cooking Pump Head, Fat Fryer / Filter, with close coupled Motor HP 1/3. NSF Carbonator Close Coupled Gear Pumps. NSF paint Color White on outer surfaces. Hot glycol or heat transfer liquids. Steel gears.

    • Pumps can operate bi-directio...

    gn hot oil Learn More
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  9. Hypro GN60 NSF Gear Pump NO MOTOR Carbonator-Mount Hot Oil

    Hypro Pumps

    Carbonator-Mount Hot Oil

    GN60
    $2,160.49
    NSF Carbonator Close Coupled Gear Pumps, painted White epoxy paint. Hot Oil Cooking Pump Head, Fat Fryer / Filter, Recommended Motor HP 1/3. NSF paint Color White on outer surfaces. Steel gears.

    • Pumps can operate bi-directionally (15 PSI max....

    Pump Only Learn More
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  10. Hypro GMBN5VB6 Bronze Rotary Gear pump

    Hypro Pumps

    Bronze Rotary Gear pump

    GMBN5VB6
    $1,693.77
    Rotary Gear pump with electric motor. 303 SS fastners, Ryton gears. Heavy duty rotary external Gear pump, heavy duty with motor.

    Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discha...

    3/4" 2HP 115/230v Learn More
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