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Reciprocating Pumps - Diaphragm, Piston, Plunger

These pumps have a diaphragm, piston or plunger which is reciprocating back and forth through a fixed stoke length. The diaphragm pumps use a circular semi-flat membrane that is flexed from a concave to a convex shape within a sealed chamber. There is no actual sliding contact of parts in the pumping chamber and therefore these pumps can handle solids, slurries, fibrous and very thick liquids quit well. Most diaphragm pumps are air operated, but electric do exist. Electric models are typically very small with several individual diaphragms working in series being driven by a rotating angled cam or a single diaphragm being driven by a mechanical connection to a solenoid. In this case, they are typically designed as metering pumps. Piston pumps like the name implies have a piston, ceramic typically, reciprocating within a very tight tolerance cylinder. Because of their materials of construction and mechanical design, they produce extremely high discharge pressures. By making them with several pistons working together in a single head a semi-steady flow can be obtained. With any of these pumps special consideration must be given to the cyclic pressure or hydraulic pulsation’s which naturally occur.Typical Positive Displacement Reciprocating pumps include AODD, single diaphragm, electric diaphragm, metering or proportioning and piston to name a few.
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  1. Riverside

    Honda 5.5 hp diaphragm pump 2 in.

    DP2H

    $1,702.00

    Honda 5.5 hp diaphragm pump 2 in., gas engine

    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 adv...

    2" 5.5HP Learn More
  2. 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
  3. 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...

  4. AMT Pumps

    2" Diaphragm Trash Pump KIT

    338G-K6

    $3,007.94
    Mud pump. Pump KIT only, NO Engine. AMT 2" 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, mudhog or Sludge pumps, diaphragm pu...
  5. 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
  6. 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
  7. Tsurumi

    Diaphragm Trash pump

    TD4-200

    $2,275.00
    Diaphragm mud trash pumps. Honda powered diaphragm trash pumps are designed to be reliable, easy to start, easy to prime, easy to maintain and are built to last. QUALITY 4-STROKE Honda GX ENGINES with OHV, and a transistorized pointless ignition ...
    Honda 4HP GX120 Learn More
  8. Tsurumi

    Diaphragm Trash pump

    TD4-300

    $2,175.00
    Diaphragm mud trash pumps. Capable of continuous dry operation for seepage dewatering. Handles sand, mud, and sludge.
    • Heavy-duty Honda gasoline engine with oil sensor delivers high power from a compact, reliable design.
    • Two-ply neoprene diap...
    Honda 4 HP GX120 Learn More
  9. Hypro Pumps

    Small Twin Plunger Pump Hollow Shaft

    53703

    $839.23
    Hypro Corporation's Twin plunger pumps with torque arm are used in a variety of spraying and pressure cleaning applications, as well as hydrostatic testing. These heavy-duty pumps are ideal for fluid handling of water and nonabrasive or general...
    piston Learn More
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