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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 GN63 Hot oil pump Fat Fryer Cooking Oil Pump

    Hypro Pumps

    Fat Fryer Cooking Oil Pump

    GN63
    $985.94
    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...

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  2. Oberdorfer N61K10G-01C33 Bronze Rotary Gear Pump Motor

    Oberdorfer Pumps

    Bronze Rotary Gear Pump & Motor

    N61K10G-01C33
    $551.00
    PUMP AND MOTOR, no relief valve.

    This Bronze Rotary Gear Pump is popular among OEM users like generator Onan. It is a diesel fuel transfer pump featuring an all bronze design and 303 stainless steel shafts with options of non-metallic gears and a...

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  3. Oberdorfer N61010GR-01F02 Bronze Rotary Gear Pump Motor R

    Oberdorfer Pumps

    Bronze Rotary Gear Pump & Motor R

    N61010GR-01F02
    $521.00
    PUMP AND MOTOR with relief valve.

    This Bronze Rotary Gear Pump is popular among OEM users. It is a diesel fuel transfer pump featuring an all bronze design and 303 stainless steel shafts with options of non-metallic gears and a variety of shaft s...

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  4. Pulsafeeder XP030LAHX Chem-Tech Peristaltic 30 GPD

    Pulsafeeder

    Chem-Tech Peristaltic 30 GPD

    XP030LAHX
    $706.50
    The Chem-Tech Series XP with peristaltic technology delivers worryfree dosing in a modern design. Each and every component of the Series XP is designed and manufactured for optimum reliability and durability for REAL Performance.

    Simplified op...

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  5. 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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  6. Pulsafeeder CTPD6HSA-PAP1 Digital Control Persitaltic 60 GPD/80 PSI

    Pulsafeeder

    Digital Control Persitaltic 60 GPD/80 PSI

    CTPD6HSA-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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  7. Pulsafeeder CTPD2HSA-PAP1 Digital Peristaltic Pump

    Pulsafeeder

    Digital Peristaltic Pump

    CTPD2HSA-PAP1
    $1,516.50
    Peristaltic chemical pump 7 GPD. 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 Norprene...

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  8. Aquatec 5850-7E12-J574 115v Electric diaphragm pump

    Aquatec Pumps

    115v Electric diaphragm pump

    5850-7E12-J574
    $193.00
    Electric diaphragm pump. These pumps are specifically designed for mobile low flow or low voltage applications such as Expreso coffee, water systems, ice makers, pesticides and fertilizers. Pressure switch set at 60 PSI. Connections are 3/8 " Joh...
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  9. Pulsafeeder CTPD3HSA-PAP1 Digital Control Peristaltic 16 GPD/110 PSI

    Pulsafeeder

    Digital Control Peristaltic 16 GPD/110 PSI

    CTPD3HSA-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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