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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. Aquatec 5502-IDN2-V77D Spray pump

    Aquatec Pumps

    Spray pump

    5502-IDN2-V77D
    $405.88
    5502-1DN2-V77D Spray Pump. Variable speed, constant pressure pumps. These pumps integrate a state-of-the-art digital controller. This unique intelligent controller makes the spray pump able to maintain a constant pressure (within 2 PSI) for var...
    Variable speed 115v Learn More
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  2. Aquatec_VS.jpg

    Aquatec Pumps

    Variable speed constant PSI 115v

    5501-2D01-V578
    $467.20
    Variable speed, constant pressure pumps. 3 min time out if no water present. These pumps integrate a state-of-the-art digital controller. This unique intelegant controller makes the pumps able to maintain a constant pressure (within 2 PSI) for ...
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  3. Flojet 2100-789 Industrial Demand Pump

    Flojet Pumps

    Industrial Demand Pump

    2100-789
    $675.60
    Spray pump is a Duplex Diaphragm demand pump 115v. Use as a carpet cleaning machines, solar water pump or any other powered shower, sprinkler, misting system. Demand switch automatically turns the spray pump on and off when discharge valve is o...
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  4. Aquatec 5513-1E12-B636 5 chamber 12Vdiaphragm pump

    Aquatec Pumps

    5 chamber 12V diaphragm pump

    5513-1E12-B636
    $290.54

    12vdc 550 Series Super Flow Pump: Reverse Osmosis System Pump, High Powered RO / DI Reverse Osmosis Pump

    OPERATION: The 550 pumps can draw water from a holding tank and pressurizeit, or boost the pressure from a low pressure source. It is designe...

    12vdc Learn More
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  5. Jabsco 6050-0003 6050 Bronze Utility Pump Flexible Impeller

    Jabsco Pumps

    6050 Bronze Utility Pump Flexible Impeller

    6050-0003
    $1,369.00
    Flexible Impeller pump for general transfer pumping using 115V AC power where self-priming, 23 gpm flow and debris tolerance are required. Oil-resistant nitrile impeller is standard. Do not pump gasoline or other flammable liquids. DO NOT RUN D...
    115v 3/4HP ODP Learn More
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  6. Jabsco 6050-0013 6050 Bronze Utility Pump Flexible Impeller

    Jabsco Pumps

    6050 Bronze Utility Pump Flexible Impeller

    6050-0013
    $1,376.88
    Flexible Impeller pump for general transfer pumping using 115V AC power where self-priming, 23 gpm flow and debris tolerance are required. Oil-resistant nitrile impeller is standard. Do not pump gasoline or other flammable liquids. DO NOT RUN D...
    115v 3/4HP TEFC Learn More
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  7. stainless steel gear pump with electric motor

    Hypro Pumps

    316SS Gear pump

    GMSV4A53
    $2,048.36

    316SS Rotary Gear pump. 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. Bi-rotational allows for flow direct...

    3/4HP 230/460v , 1/2" Learn More
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  8. Hypro GMSV4A 316SS Gear pump

    Hypro Pumps

    316SS Gear pump

    GMSV4A
    $1,962.16

    316SS Rotary Gear pump end PEO*. 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. Bi-rota...

    No motor, 1/2" Learn More
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  9. AMT electric diaphragm mud pump 3" ipt

    AMT Pumps

    3" Electric Diaphragm Pump

    337E-96
    $3,697.50

    Electric Diaphragm water pumps features 2-stage, 44 to 1 gear reduction with a large diameter output gear and heavy duty ball bearing construction. Often referred to as Mud pumps or Sludge pumps, diaphragm trash pumps are designed to pump mud, slu...

    1.5HP 115/230v Learn More
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  10. AMT electric diaphragm mud pump 3" ipt

    AMT Pumps

    3" Electric Diaphragm Pump

    337T-96
    $3,697.50

    Electric Diaphragm water pumps features 2-stage, 44 to 1 gear reduction with a large diameter output gear and heavy duty ball bearing construction. Often referred to as Mud pumps or Sludge pumps, diaphragm trash pumps are designed to pump mud, slu...

    1.5HP 3 Phase Electric Learn More
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