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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 BPCV5V Cast Iron gear pump

    Hypro Pumps

    Cast Iron gear pump

    BPCV5V
    $2,973.40
    11 GPM Cast Iron pedestal mounted gear pump. For oils and other lubricating liquids. Not for use on water.
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  2. Hypro BPCV6V Cast Iron gear pump

    Hypro Pumps

    Cast Iron gear pump

    BPCV6V
    $2,973.40
    11 GPM Cast Iron pedestal mounted gear pump. For oils and other lubricating liquids. Not for use on water.
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  3. Hypro GMCV6VC7 Cast Iron Gear pump

    Hypro Pumps

    Cast Iron Gear pump

    GMCV6VC7
    $1,111.00
    Rotary Cast Iron Gear pump 1" 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 ...

    3HP 230v/1 ODP 1" Learn More
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  4. Hypro GMCV2VA3 Cast Iron Gear pump 1/4

    Hypro Pumps

    Cast Iron Gear pump 1/4"

    GMCV2VA3
    $1,230.00

    Rotary Cast Iron Gear pump end. 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.

    Hypr...

    3/4HP 115/230v ODP 1/4" Learn More
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  5. Hypro GMCV3VA Cast Iron Gear pump PEO

    Hypro Pumps

    Cast Iron Gear pump PEO

    GMCV3VA
    $899.00

    Rotary Cast Iron Gear pump end. 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 ...

    No motor 3/8" Learn More
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  6. Hypro MCN3A Cast Iron Gear pump only

    Hypro Pumps

    Cast Iron Gear pump only

    MCN3A
    $5,071.99
    Rotary Cast Iron Gear pump end. 303 SS fastners, Ryton 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...

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  7. Hypro C4V CI gear pump 11 gpm

    Hypro Pumps

    CI gear pump 11 gpm

    C4V
    $1,493.69
    11 GPM Cast iron pedestal mounted gear pump. For oils and other lubricating liquids. Not for use on water. Vellumoid Gasket Material, FKM Lip Seal
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  8. pentair_bronze_4.jpg

    Hypro Pumps

    Rotary Gear pump only

    MCN6VC
    $1,479.60
    Rotary Gear pump end. Cast Iron with 303 SS fastners, CI 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.

    U...

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  9. Hypro MBN6VC Rotary Gear pump only

    Hypro Pumps

    Rotary Gear pump only

    MBN6VC
    $4,353.08
    Rotary Gear pump end. 303 SS fastners, Ryton 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 for pressure...

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  10. Hypro MBN5VB Rotary Gear pump only

    Hypro Pumps

    Rotary Gear pump only

    MBN5VB
    $5,401.27
    Rotary Gear pump end. 303 SS fastners, Ryton 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 for press...

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