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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. Bronze pedestal mounted gear pump

    Hypro Pumps

    Bronze gear pump

    GPBN2V
    $1,293.52

    5 GPM Bronze pedestal mounted gear pump. For oils and other lubricating liquids. Excellent for water based fluids. Ryton PPS spur gears provide quiet operation and chemical compatibility. No metal to metal contact.

    For smaller gear pumps see Ligh...

    3/8" Learn More
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  2. Hypro shurflo bronze gear pump teel dayton

    Hypro Pumps

    Bronze gear pump

    GPBN3V
    $1,300.18
    11 GPM Bronze pedestal mounted gear pump. For oils and other lubricating liquids. Excellent for water based fluids. Ryton PPS spur gears provide quiet operation and chemical compatibility. No metal to metal contact.
    1/2" Learn More
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  3. Hypro bronze gear pump heavy duty

    Hypro Pumps

    Bronze gear pump

    GPBN4V
    $1,310.83
    11 GPM Bronze pedestal mounted gear pump. For oils and other lubricating liquids. Exellent for water based fluids. Ryton PPS spur gears provide quiet operation and chemical compatibility. No metal to metal contact.
    3/4" Learn More
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  4. Hypro GPBN5V Bronze gear pump

    Hypro Pumps

    Bronze gear pump

    GPBN5V
    $1,314.82
    20 GPM Bronze pedestal mounted gear pump. For oils and other lubricating liquids. Exellent for water based fluids. Ryton PPS spur gears provide quiet operation and chemical compatibility. No metal to metal contact. 1/2Hp to 2HP motor required dep...
    1" Learn More
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  5. Hypro shurflo Bronze pedestal mounted gear pump

    Hypro Pumps

    Bronze gear pump

    GPBN6V
    $1,322.80
    Bronze pedestal mounted gear pump. For oils and other lubricating liquids. Excellent for water based fluids. Ryton PPS spur gears provide quiet operation and chemical compatibility. No metal to metal contact.
    1" Learn More
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  6. Hypro GMBN Bronze Gear pump only peo

    Hypro Pumps

    Bronze Gear pump only

    GMBN3VA
    $1,408.32
    Rotary Gear pump end. 303 SS fasteners, 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 pres...

    3/8" motor mount kit Learn More
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  7. Oberdorfer N9000RS18 Bronze Pedestal Gear Pump w/ relief valve

    Oberdorfer Pumps

    Bronze Pedestal Gear Pump w/ relief valve

    N9000RS18
    $1,314.00
    Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the b...
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  8. Hypro GMBN2VA Rotary Gear pump only

    Hypro Pumps

    Bronze Gear pump only

    GMBN2VA
    $1,235.90
    Rotary Gear pump end. 303 SS fasteners, 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 pres...

    No motor Learn More
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  9. Hypro GMBN4VA Rotary Gear peo

    Hypro Pumps

    Rotary Gear pump only

    GMBN4VA
    $1,469.66
    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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  10. Pulsafeeder CTPD4HSA-PAP1 Digital Control Peristaltic 26 GPD/100 PSI

    Pulsafeeder

    Digital Control Peristaltic 26 GPD/100 PSI

    CTPD4HSA-PAP1
    $1,438.20
    CTP-D is for applications requiring precise feed rates, offering digital control from 10% to 100%

    Simplified operation. Push-button prime switch and on-off dial provide quick, safe start-up.

    High-strength Norpreneï½® peristaltic tubing is rated f...

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