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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.
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  1. Flojet

    Explosion Proof beverage alcohol pump for high proof spirits

    G70C

    $405.00

    Little Explosion Proof Alcohol Pumps are the best for high proof beverage alcohol.

    All of the wetted parts are completely resistant to ethanol, alcohol and other low flash point flammable liquids.
    The Model G70C is designed to be the ultimate in p...

    G70C ATEX Kalrez® Air Operated Diaphragm Pump for alcohol and high proof spirits Learn More
  2. Remco

    12v Demand Spray Pump

    2240-1B1-10I

    $89.00

    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
  3. Oberdorfer

    Gear Pump & 12VDC Motor

    OBN992R-C81

    $1,471.00
    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
  4. Oberdorfer

    Gear Pump & 1/4HP Motor

    OBN992R-01C81

    $1,482.00

    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
  5. Oberdorfer

    N993 Pump & motor 12VDC

    OBN993Q-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
  6. Oberdorfer

    N993 Pump & motor 12VDC

    OBN993-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
  7. Oberdorfer - N970R-39: 3/4" Bronze gear pump
    Sale

    Oberdorfer

    3/4" Bronze gear pump

    OBN970R-39

    10% Off Special Price $1,055.00 Regular Price $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
  8. Oberdorfer

    Bronze Rotary Gear Pump 1"

    OBN990H-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
  9. All-Flo

    Nylon Air Operated Double Diaphragm Pump

    A025-SPK-TTKV-S70

    $531.63
    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
  10. All-Flo

    PP Air Operated Double Diaphragm Pump

    C150-FPP-SSPE-B70

    $2,412.24
    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...
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