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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. 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
  2. Riverside

    Diaphragm pump repair kit 3"

    03438

    $162.00

    Repair Diaphragm for Riverside Homelite Mud Pump DP3
    Durable, Reliable, and Perfect for Heavy-Duty Pumping Applications

    The Riverside 03438 Repair Diaphragm is designed to keep your Riverside Homelite mud pump DP3 operating at peak performance. Th...

  3. Riverside

    Diaphragm pump repair kit 2"

    03439

    $149.00

    Repair diaphragm for Riverside Homelite mud pump DP2. Diaphragm pumps are positive displacement pumps. They pump a specific volume for each pump cycle. Diaphragm pumps move fluids more slowly than centrifugal pumps, but can handle mud and larger a...

  4. Riverside

    Diaphragm pump flapper kit 3"

    741541

    $49.00

    Repair 741541 flapper part Riverside Homelite mud pump DP3.

    Diaphragm pumps are positive displacement pumps. They pump a specific volume for each pump cycle. Diaphragm pumps move fluids more slowly than centrifugal pumps, but can handle mud and l...

    3" pump flapper valve Learn More
  5. Riverside

    3 in. Honda diaphragm pump

    DP3H

    $2,130.00

    Diaphragm pumps are positive displacement pumps. They pump a specific volume for each pump cycle. Diaphragm pumps move fluids more slowly than centrifugal pumps, but can handle mud and larger amounts of solids including abrasive materials. They al...

    5.5 hp Honda engine Learn More
  6. Riverside

    3 in. 3.5 hp briggs diaphragm pump

    DP3B

    $1,938.00

    Premium Series Diaphragm Pump

    Riverside Pumps’ rugged and reliable diaphragm pumps, often called “mudhogs”, are built to handle heavy mud and sludge thicker than any centrifugal pump can manage. Designed for tough jobs, they can also run dr...

  7. Riverside

    3 in. Kohler Diesel diaphragm pump

    DP3KD

    $3,622.00

    Obsolete due to engine. Parts are still available.

    Diaphragm pumps are positive displacement pumps. They pump aspecific volume for each pump cycle. Diesel Diaphragm pumps move fluidsmore slowly than centrifugal pumps, but can handle mud and large...

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