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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 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
  2. 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...

  3. 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...

  4. 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...

  5. Hypro Pumps

    Rotary Gear pump only

    GMBN4VA

    $1,168.57
    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...

  6. Hypro Pumps

    Rotary Gear pump only

    MBN5B

    $5,071.99
    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...

  7. Hypro Pumps

    Rotary Gear pump only

    MBN6B

    $5,071.99
    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...

  8. Hypro Pumps

    Rotary Gear pump only

    MBN6C

    $5,071.99
    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...

  9. Hypro Pumps

    Rotary Gear pump only

    MBN6VB

    $5,071.99
    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...

  10. Hypro Pumps

    Ped. Mount CI pump #4

    GPCV4V

    $1,253.28
    CI pedestal or long coupled Rotary gear pump end. 303 SS fastners and shaft, 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 mor...

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