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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. Remco - 3323-1E1-82B: 12v Demand Pump 2GPM

    Remco

    12v Demand Pump 2GPM

    3323-1E1-82B
    $196.58

    Demanding industrial pump environments require precise engineering and quality components the demand pump was designed with both. Demand pumps operated as a positive displacement pump which has a pressure switch built in. When flow is open the pum...

    2.2 GPM Demand 60 PSI Viton Santoprene 3/8″ FNPT 12 VDC Learn More
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  2. Riverside DP3B 3 in. 3.5 hp briggs diaphragm pump

    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...

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  3. SmoothFlo Demand Bypass Pump 12v

    Remco

    SmoothFlo Demand Bypass Pump 12v

    3923-9J2-82B
    Call For Price

    SmothFlow by Remco pump.

    Demanding industrial pump environments require precise engineering and quality components. The ProFlow Ultra series was designed with both. Demand pumps operated as a positive displacement pump which has a pressure switch...

    2GPM 120PSI 12VDC . Please Call for Information Learn More
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  4. AMT 336G-K6 Mud pump 2 Diaphragm Trash Pump KIT

    AMT Pumps

    2" Diaphragm Trash Pump KIT

    336G-K6
    $2,284.38
    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...
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  5. FatBoy Diaphragm Pump Bypass

    Remco

    FatBoy Diaphragm Pump Bypass

    5518-2I1-94A
    $283.94

    THE PROFLO FATBOY® PUMPS UP THE VOLUME WITH 7GPM.

    FatBoy® Demanding industrial pump environments require precise engineering and quality components - the ProFlo FatBoy was designed with both. Liquid de-icing applications. To maximize the potent...

    7GPM 100PSI 12VDC FatBoy® Learn More
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  6. 335H-96_5.gif

    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...
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  7. Remco_Fatboy.jpg

    Remco

    12v Demand Pump

    5536-1E1-82B
    $214.92
    Demanding industrial pump environments require precise engineering and quality components葉he demand pump was designed with both. Demand pumps operated as a positive displacement pump which has a pressure switch built in. When flow is open th...
    4GPM 60PSI 12DC Learn More
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  8. Remco 5538-1I1-94A FatBoy Demand Pump

    Remco

    FatBoy Demand Pump

    5538-1I1-94A
    $379.00

    THE PROFLO FATBOY® PUMPS UP THE VOLUME WITH 7GPM 100psi. Demanding industrial pump environments require precise engineering and quality componentsè. The ProFlo FatBoy® was designed with both. To maximize the potential of all five diaphragm chamber...

    7GPM 100PSI 12VDC Demand NPT Learn More
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  9. 24vdc Demand Pump

    Remco

    24vdc Demand Pump

    2452-1H1-20B
    $173.64
    Demanding industrial pump environments require precise engineering and quality components葉he demand pump was designed with both. Demand pumps operated as a positive displacement pump which has a pressure switch built in. When flow is open th...
    2GPM 80PSI Learn More
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  10. Riverside DP3KD 3 in. Kohler Diesel diaphragm pump

    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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