My Cart

Positive Displacement Pumps

These pumps are often thought of as high-pressure pumps. Their positive displacement of fluid and fixed volume are the result of the fluid being mechanically moved through their pump passage on a regular cycle. This means that regardless of the system they discharge into, the pressure and volume will remain constant. The power of the driving device and its speed, limit the volume and pressure.Positive Displacement pumps:Flow rates of GPD, CC/min to 100 GPM typically.Discharge pressures of a 1 to 1000 PSI.Low speed and fixed volume per cycle, they handle very viscid fluids well.Smaller than centrifugal pumps.Quiet, do not ad much heat to the fluid, suitable for shear sensitive fluids.Diaphragm pumps can easily pass solids, stringy and fibrous foreign matter. Are made in materials from CI to Titanium and PP, PVDF and PPS engineering resins.
View as List Grid

Items 131-140 of 853

Set Descending Direction
per page
Page
  1. Remco_demand pump

    Remco

    115v Demand Pump 1GPM

    3321-1E1-52C
    $206.41

    Diaphragm pump with automatic switch. Demand

    Demanding industrial electric pump environments require precise engineering and quality components葉he demand pump was designed with both. Demand pumps operated as a positive displacement pump which h...

    1GPM 60PSI 115AC Learn More
    Add to Wish List Add to Compare
  2. Oberdorfer N993R N993 bronze Gear pump

    Oberdorfer Pumps

    3/8 bronze Gear pump

    N993R-03
    $1,259.70
    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 3/8" ports Learn More
    Add to Wish List Add to Compare
  3. Remco_demand pump

    Remco

    Bypass Pump 2GPM

    3321-2E1-82B
    $206.41

    Industrial pump environments require precise engineering and quality components the bypass pump was designed with both. For its size, it is one of the most powerful and productive diaphragm pumps you can buy, pumping up to 2.0 gallons per minute. ...

    2GPM 60PSI 12v Learn More
    Add to Wish List Add to Compare
  4. 316SS Gear pump

    Hypro Pumps

    316SS Gear pump

    GMSV4A4
    $1,735.68

    316SS Rotary Gear pump with 1HP motor. 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. B...

    1/2" 1HP 115/230v Learn More
    Add to Wish List Add to Compare
  5. allflo_61zbq1r7sql._sl1000__4.jpg

    All-Flo Pumps

    Air Diaphragm pump Aluminum

    A100-NAA-TTYT-B30
    $2,800.50
    Aluminum Air AODD Pump 1". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Click here to Learn How to Size your Diaphragm Pump and for a Materi...
    Alum/ptfe/1" Learn More
    Add to Wish List Add to Compare
  6. Remco_Fatboy.jpg

    Remco

    Demand Pump 5.3GPM

    5537-1E3-58C
    $246.71

    Review New Model: 5537-1E1-65C

    Extreme Duty 115v --5.3gpm Demanding industrial pump environments require precise engineering and quality components the demand pump was designed with both. Demand pumps operated as a positive displacement pump whic...

    5.3GPM 60PSI 115v NPT Geolast Learn More
    Add to Wish List Add to Compare
  7. 316SS Gear pump

    Hypro Pumps

    316SS Gear pump

    GMSV2A
    $1,382.98

    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, 3/8" Learn More
    Add to Wish List Add to Compare
  8. riverside_dp3e-.jpg

    Riverside

    3 in. Electric diaphragm pump

    DP3E
    $1,963.00

    Riverside Pumps' rugged and reliable Diaphragm Pumps are sometimes called "mudhogs" for their ability to pump heavy mud and sludge, thicker than any centrifugal pump can handle. They also have the advantage of being able to run dry without damage,...

    115/230v Learn More
    Add to Wish List Add to Compare
  9. Remco - 3323-1E1-82B: 12v Demand Pump 2GPM

    Remco

    12v Demand Pump 2GPM

    3303-1E1-82B
    $196.58

    3303 no longer available. Review 3323-1E1-82B or 3313-1E1-82B

    Demanding industrial pump environments require precise engineering and quality components the demand pump was designed with both. Demand pumps operated as a positive displacement pump ...

    2GPM 60PSI 12VDC Learn More
    Add to Wish List Add to Compare
  10. Oberdorfer N991M-f07 N991 Gear PUMP motor

    Oberdorfer Pumps

    N991 Gear PUMP & motor reversible

    N991M-F07
    $1,285.70

    Reversible Gear PUMP & 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. Pump ...

    115v/230v Reversible 1/4" Learn More
    Add to Wish List Add to Compare
View as List Grid

Items 131-140 of 853

Set Descending Direction
per page
Page
Compare Products
  1. Remove This Item
Compare
Clear All
Shop By
Shopping Options
Category
  1. Reciprocating Pumps - Diaphragm, Piston, Plunger 486 items
  2. Rotary Pumps - Gear, Flexible Impeller, Screw 367 items
Phase (Ø)
  1. Single (1) 176 items
  2. Three (3) 49 items
Voltage (Range)
  1. 110-120 118 items
  2. 208-240 1 item
  3. 220-240/460-480 46 items
  4. 110-120/220-240 55 items
  5. 220-240 12 items
  6. 460-480 2 items
  7. 12/24/36 VDC 72 items
Horse Power (HP)
  1. 1/4 14 items
  2. 1/3 24 items
  3. 1/2 26 items
  4. 3/4 25 items
  5. 1 27 items
  6. 1 1/2 22 items
  7. 2 22 items
  8. 2 1/2 3 items
  9. 3 21 items
  10. 3 1/2 4 items
  11. 4 9 items
  12. 5 11 items
  13. 5 1/2 5 items
  14. 6 11 items
  15. 7 10 items
  16. 8 7 items
  17. 9 6 items
  18. 10 5 items
  19. 11 7 items
  20. 13 10 items
  21. 15 1 item
  22. 18 1 item
  23. 25 4 items
inlet size
  1. Less than 1in 414 items
  2. 1in 128 items
  3. 1 ¼" 9 items
  4. 1 ½" 47 items
  5. 2in 24 items
  6. 2 ½" 50 items
  7. 3" 11 items
  8. 4" 2 items
PRICE $
$  -  $
Manufacturer
  1. All-Flo Pumps 83 items
  2. AMT Pumps 8 items
  3. Aquatec Pumps 42 items
  4. Barmesa Pumps 1 item
  5. Barnes Pumps 2 items
  6. Fill-Rite 2 items
  7. Flojet Pumps 26 items
  8. General Pump 271 items
  9. Graco Pumps 12 items
  10. Graymills Pumps 9 items
  11. Hypro Pumps 89 items
  12. Jabsco Pumps 16 items
  13. Little Giant Pumps 1 item
  14. March Pumps 2 items
  15. Marco Mate 2 items
  16. Myers-Seth 4 items
  17. Oberdorfer Pumps 150 items
  18. Pulsafeeder 31 items
  19. PumpBiz 29 items
  20. Pumptec 10 items
  21. Remco 38 items
  22. Riverside 15 items
  23. Stenner 8 items
  24. Tsurumi 2 items
Motor
  1. Air-Pneumatic 101 items
  2. Diesel Engine 3 items
  3. EXP (C 1, Gp C/D & C11, Gp F/G) 2 items
  4. EXP (C 1, Gp C/D) 2 items
  5. EXP (C 1, Gp D) 2 items
  6. Gas Engine 10 items
  7. Hermetically Sealed 4 items
  8. ODP 81 items
  9. TEFC 67 items
  10. TENV 127 items