My Cart

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.
View as List Grid

Items 51-60 of 315

Set Descending Direction
per page
Page
  1. Oberdorfer SM1031BCM Magnetic Drive Pump

    Oberdorfer Pumps

    Magnetic Drive Pump

    SM1031BCM
    $3,889.20
    Designed to handle highly corrosive liquids that must be pumped under pressure. The Chemsteel pump prevents system contamination while maintaining the purity and integrity of the liquid being pumped. Key attributes include:

    Slotted bearings to...

    Learn More
    Add to Wish List Add to Compare
  2. Oberdorfer SM1033BCM Magnetic Drive Pump

    Oberdorfer Pumps

    Magnetic Drive Pump

    SM1033BCM
    $6,358.80
    Designed to handle highly corrosive liquids that must be pumped under pressure. The Chemsteel pump prevents system contamination while maintaining the purity and integrety of the liquid being pumped. Key attributes include:

    Slotted bearings to lu...

    Learn More
    Add to Wish List Add to Compare
  3. Bronze Cooling Gear Pump w/ relief valve

    Oberdorfer Pumps

    Bronze Cooling Gear Pump w/ relief valve

    N1000R-66
    $450.00
    Water-cooled induction heating systems / machine cooling Pump. Bronze Pedestal Gear pump with relief valve. Often used as a coolant pump Ameritherm, Dynaflux. Pump flow is reversible.
    • Gear pumps are positive displacement pumps. Each shaft re...
    Water-cooled induction heating systems / machine cooling Pump. Bronze Pedestal Gear pump with relief valve. Often used as a coolant pump Ameritherm, Dynaflux. Pump flow is reversible.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the back pressure in the discharge line. Shaft speed and flow are directly proportional.
      • Learn More
    Add to Wish List Add to Compare
  4. 12vdc Cast Iron Gear pump battery dc hypro shertech GMCV

    Hypro Pumps

    12V DC Cast Iron Gear pump

    GMCV4VA-12
    $2,187.12

    12 volt 12v DC Rotary Cast Iron Gear pump. 303 SS fasteners, steel gears. Battery powered self priming heavy duty gear pump.

    Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discharge. D...

    12vdc 1HP Learn More
    Add to Wish List Add to Compare
  5. Hypro GMBN6VA Rotary Gear pump only sherflo shertech motor mount

    Hypro Pumps

    Bronze Gear pump only

    GMBN6V
    $1,686.05
    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
    Add to Wish List Add to Compare
  6. Oberdorfer - N4000LR

    Oberdorfer Pumps

    Bronze Pedestal Gear Pump W Relief Valve

    N4000LRS3
    $701.00

    Bronze Pedestal Gear Pump With Relief Valve. Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings, Chillers (Dynaflux) often used with welders. See performance chart for motor speed VS HP VS performance.

    • G...
    1/2" w/ relief valve Learn More
    Add to Wish List Add to Compare
  7. Hypro GMCV5VA6 Cast Iron Gear pump

    Hypro Pumps

    Cast Iron Gear pump

    GMCV5VA6
    $2,255.39
    Rotary Cast Iron Gear pump 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 than...

    2HP 115/230v ODP 3/4" Learn More
    Add to Wish List Add to Compare
  8. Oberdorfer N4000L Bronze Pedestal Gear Pump

    Oberdorfer Pumps

    Bronze Pedestal Gear Pump

    N4000RS3
    $1,044.00
    Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings. See performance chart for motor speed VS HP VS performance.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite a...
    1/2" Learn More
    Add to Wish List Add to Compare
  9. Hypro GMCV2VA3 Cast Iron Gear pump 1/4

    Hypro Pumps

    Cast Iron Gear pump 1/4"

    GMCV2VA33T
    $2,131.57

    Rotary Cast Iron Gear pump 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 than o...

    3/4HP 230/460v TEFC 1/4" Learn More
    Add to Wish List Add to Compare
  10. Oberdorfer N993R N993 bronze Gear pump

    Oberdorfer Pumps

    1/2 bronze Gear pump

    N993R-03
    $579.00
    Pump Only PEO, no motor.Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long service life.

    Gear pu...

    Pump Only PEO, Relief 1/2" ports Learn More
    Add to Wish List Add to Compare
View as List Grid

Items 51-60 of 315

Set Descending Direction
per page
Page
Compare Products
  1. Remove This Item
Compare
Clear All
Shop By
Shopping Options
Category
  1. Electric Diaphragm Pumps 47 items
  2. Chemical Feed Pumps 17 items
  3. Dry Running Pumps 51 items
  4. Packed 18 items
  5. Peristaltic Hose Pumps 6 items
  6. Variable Speed Pumps 37 items
  7. Mechanical Sealed Pumps 237 items
Phase (Ø)
  1. Single (1) 105 items
  2. Three (3) 48 items
Voltage (Range)
  1. 110-120 56 items
  2. 220-240/460-480 45 items
  3. 110-120/220-240 45 items
  4. 220-240 8 items
  5. 460-480 1 item
  6. 12/24/36 VDC 37 items
Horse Power (HP)
  1. 1/4 11 items
  2. 1/3 24 items
  3. 1/2 23 items
  4. 3/4 17 items
  5. 1 24 items
  6. 1 1/2 18 items
  7. 2 7 items
  8. 3 8 items
  9. 5 1 item
  10. 13 1 item
inlet size
  1. Less than 1" 170 items
  2. 1" 72 items
  3. 1 ¼" 8 items
  4. 1 ½" 10 items
  5. 2" 7 items
  6. 3" 3 items
PRICE $
$  -  $
Motor
  1. EXP (C 1, Gp C/D & C11, Gp F/G) 3 items
  2. EXP (C 1, Gp C/D) 1 item
  3. EXP (C 1, Gp D) 1 item
  4. Gas Engine 1 item
  5. ODP 67 items
  6. PTO 1 item
  7. TEFC 49 items
  8. TENV 68 items