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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. Aquatec 5513-1E77-M638 Ag Elect. diaphragm pump

    Aquatec Pumps

    Ag Elect. diaphragm pump

    5513-1E77-M638
    $319.74

    550 Series Super Flow Pump: These pumps are specifically designed for Ag applications such as MOSQUITO pesticides and fertilizers. 12 VDC SEALED MOTOR. FKM SEALS. Pressure switch set at 60 PSI.

    OPERATION: The 550 pumps can draw water from a holdi...

    12vdc 5GPM 60PSI Learn More
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  2. 3/4" Bronze gear pump 1HP

    Oberdorfer Pumps

    3/4" Bronze gear pump 1HP

    N970RH-N26
    $5,003.27
    3/4" Bronze rotary gear pump with relief valve and close coupled to a 1 HP 115v/1/60 1725 RPM TEFC motor.Pump housings and gears are made of top quality bronze, shafts are stainless steel 303. Bearings are made of high performance carbon-grap...
    115/230v ODP Relief Valve Learn More
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  3. General Pump EZ3040GUI EZ 44 3plex 12.4 Hollow Shaft

    General Pump

    EZ 44 3plex 12.4 Hollow Shaft

    EZ3040GUI
    $1,267.30
    EZ 44 G Triplex Plunger Pump with Hollow Shaft, Flanged for Direct Couple to Gasoline Engines (SAE J609B) - Forged brass manifold with an exclusive lifetime warranty. Flanged for mounting on up to 13 horsepower engines. Pump with Built-in Unloade...
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  4. amt_by_gorman-rupp_3_inch_self-priming_honda_diaphragm_pump_335h-96.jpg

    AMT Pumps

    3" Honda Driven Diaphragm Pump

    69-H533
    20% Off Special Price $2,150.50 Regular Price $2,688.13

    Honda GX160 gas engine 5.5HP. 3" Diaphragm pumps features 2-stage, 44 to 1 gear reduction with a large diameter output gear and heavy duty ball bearing construction. Often referred to as Mud pumps or Sludge pumps, diaphragm pumps are designed to p...

    Honda GX160 Learn More
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  5. Oberdorfer N993Q-J46 Bronze gear pump

    Oberdorfer Pumps

    Bronze gear pump

    N993Q-J46
    $2,273.70
    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 pumps are positive displac...

    1/2HP 115/230v Learn More
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  6. EZ 44 3plex 12.4hp Hollow Shaft

    General Pump

    EZ 44 3plex 12.4hp Hollow Shaft

    EZ4030G34
    $1,286.15
    EZ 44 G Triplex Plunger Pump with Hollow Shaft, Flanged for Direct Couple to Gasoline Engines (SAE J609B) - Forged brass manifold with an exclusive lifetime warranty. Flanged for mounting on up to 13 horsepower engines. Max. Inlet Vacuum: Flooded...
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  7. Aquatec 5852-7E12-0664 12v water pump demand

    Aquatec Pumps

    12v water pump demand

    5852-7E12-0664
    $281.78
    12v water pump. 550 Series Super Flow Pump: These pumps are specifically designed for mobile low flow or low voltage applications such as water systems, pesticides and fertilizers. 12 VDC. Pressure switch set at 60 PSI. Connections are 1/4 " ...
    1GPM 60psi 12v Learn More
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  8. Aquatec 5851-7E12-J574 115v Electric diaphragm pump

    Aquatec Pumps

    115v Electric diaphragm pump

    5851-7E12-J574
    $287.62
    Electric diaphragm pump. 550 Series Super Flow Pump: These pumps are specifically designed for mobile low flow or low voltage applications such as water systems, ice makers, pesticides and fertilizers. Pressure switch set at 60 PSI. Connections a...
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  9. Oberdorfer 406MK-04N26 406M Macerator Pump

    Oberdorfer Pumps

    406M Macerator Pump

    406MK-04N26
    $2,869.10
    Sewage transfer macerator chopper pump w/rubber impeller. Portable all bronze construction. Includes vacuum switch to help prevent dry running.
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  10. Riverside DP2B 2 BS 550 Diaphragm Pump

    Riverside

    2" B&S 550 Diaphragm Pump

    DP2B
    $1,442.00

    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,...

    3.5HP diaphragm pump Learn More
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