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 1-10 of 773

Set Descending Direction
per page
Page
  1. H Series Sanitary & Hygienic

    All-Flo Pumps

    H Series Sanitary & Hygienic

    H050-THL-PTTT-G70
    $3,498.00
    1/2” (13mm) HDPE/ Polished 316L Stainless Steel. Suction lift capability may vary depending on the construction materials and application parameters. The range is from 16.4 feet dry to 30 feet in a primed condition. Tri Clamp Click here to ...
    Sanitary Learn More
    Add to Wish List Add to Compare
  2. allflo_c150-fpp-sspe-b70-2.jpg

    All-Flo Pumps

    PP Air Operated Double Diaphragm Pump

    C150-FPP-SSPE-B70
    $2,653.46
    PolyPro Air AODD Pump 1.5". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical, pneumatic pump for chemicals. Click here to Learn How to Size your D...
    PE-15 1-1/2" Learn More
    Add to Wish List Add to Compare
  3. All-Flo A025-SQP-STPE-Y70 Nylon Air Operated Double Diaphragm Pump

    All-Flo Pumps

    Nylon Air Operated Double Diaphragm Pump

    A025-SPK-TTKV-S70
    $584.79
    Nylon Air AODD Pump 1/4". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Replaces RDD-025 Models available in PP, PVDF, Nylon, Conductive Nylon, ...
    1/4" Learn More
    Add to Wish List Add to Compare
  4. Oberdorfer N990J-T47 Bronze Rotary Gear Pump w/ motor

    Oberdorfer Pumps

    Bronze Rotary Gear Pump 1"

    N990H-T47
    $2,068.00

    1" Close coupled bronze rotary gear pump with motor. 1.5HP

    • Bronze Construction with SS shaft
    • Helical gears for quiet operation
    • Self-lubricating carbon bearings
    • O-ring seal for max. leak protection
    • The pump drive shaft is connected to the mo...
    1-1/2HP 115/230v 1" Learn More
    Add to Wish List Add to Compare
  5. Oberdorfer - N970R-39: 3/4" Bronze gear pump

    Oberdorfer Pumps

    3/4" Bronze gear pump

    N970R-39
    $1,172.00

    3/4" Bronze rotary gear pump with relief valve, close couples to a 1725 RPM motor. PUMP ONLY, Gear Pump End Only (no motor - for Clutch Mounted assembly). Often used to pump Diesel fuel. Pump housings and gears are made of top quality bronze, shaf...

    PEO Relief Valve Learn More
    Add to Wish List Add to Compare
  6. Oberdorfer N993 Pump motor

    Oberdorfer Pumps

    N993 Pump & motor 12VDC

    N993-C81
    $1,395.00

    12VDC gear 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.

    12 volt Gear pumps ar...

    12VDC Learn More
    Add to Wish List Add to Compare
  7. Oberdorfer N993 Pump motor

    Oberdorfer Pumps

    N993 Pump & motor 12VDC

    N993Q-J75
    $1,776.00

    12VDC gear Pump 1/2HP.

    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.

    12 volt Gear pu...

    12VDC Learn More
    Add to Wish List Add to Compare
  8. Oberdorfer - N992R-01C81: Gear Pump

    Oberdorfer Pumps

    Gear Pump & 1/4HP Motor

    N992R-01C81
    $1,630.20

    Bronze Gear Pump with housings and gears are made of top quality bronze; shafts are from stainless steel 303. Continuous Duty gear pump fitted with 115/230v 1/4hp motor. Bearings are designed of high performance carbon-graphite material selected f...

    1/4HP 115/230V ODP Learn More
    Add to Wish List Add to Compare
  9. Oberdorfer N992r-c81 Gear Pump & 12VDC Motor

    Oberdorfer Pumps

    Gear Pump & 12VDC Motor

    N992R-C81
    $1,618.10
    12V DC Gear Pump with relief valve. Housings and gears are made of top quality bronze; shafts are from stainless steel 303. Continuous Duty gear pump fitted with 12V DC motor. Bearings are designed of high performance carbon-graphite material s...
    1/3HP 12V DC Relief valve Learn More
    Add to Wish List Add to Compare
  10. Remco - 2240-1B1-101

    Remco

    12v Demand Spray Pump

    2240-1B1-10I
    $96.12

    12v Demand Spray Pump.

    1gpm 12v pump with On / Off switch. Economy Plus series. Far and away the best selling 12vdc pump in the industry. Choose from standard models or configure to meet the special needs of your OEM application. Replace Delevan ...

    12vdc On/Off switch 1gpm 40psi Learn More
    Add to Wish List Add to Compare
View as List Grid

Items 1-10 of 773

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 455 items
  2. Rotary Pumps - Gear, Flexible Impeller, Screw 318 items
Phase (Ø)
  1. Single (1) 177 items
  2. Three (3) 49 items
Voltage (Range)
  1. 110-120 124 items
  2. 208-240 1 item
  3. 220-240/460-480 45 items
  4. 110-120/220-240 51 items
  5. 220-240 8 items
  6. 460-480 2 items
  7. 12/24/36 VDC 59 items
Horse Power (HP)
  1. 1/4 11 items
  2. 1/3 24 items
  3. 1/2 24 items
  4. 3/4 18 items
  5. 1 25 items
  6. 1 1/2 23 items
  7. 2 21 items
  8. 2 1/2 3 items
  9. 3 22 items
  10. 3 1/2 4 items
  11. 4 6 items
  12. 5 11 items
  13. 5 1/2 4 items
  14. 6 8 items
  15. 7 13 items
  16. 8 9 items
  17. 9 5 items
  18. 10 4 items
  19. 11 6 items
  20. 13 11 items
  21. 18 1 item
  22. 25 3 items
inlet size
  1. Less than 1" 396 items
  2. 1" 110 items
  3. 1 ¼" 8 items
  4. 1 ½" 33 items
  5. 2" 16 items
  6. 2 ½" 50 items
  7. 3" 8 items
PRICE $
$  -  $
Motor
  1. Air-Pneumatic 84 items
  2. Diesel Engine 1 item
  3. EXP (C 1, Gp C/D & C11, Gp F/G) 3 items
  4. EXP (C 1, Gp C/D) 1 item
  5. EXP (C 1, Gp D) 1 item
  6. Gas Engine 7 items
  7. Hermetically Sealed 3 items
  8. ODP 70 items
  9. PTO 1 item
  10. TEFC 76 items
  11. TENV 103 items