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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

    12v Demand Spray Pump

    2240-1B1-10I

    $96.12

    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
  2. Remco

    12v Demand Spray Pump

    2240-1B1-10E

    $96.12

    12v Demand Spray Pump.

    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 2200 pumps on Snowex Trynex spreaders. Long-life (2000 ho...

    12vdc Learn More
  3. Remco

    FatBoy Demand Diaphragm Pump

    5538-1E1-94A

    $397.15

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

    7GPM 60PSI 12VDC NPT Demand Learn More
  4. Remco

    115v Demand Pump 5.3GPM

    5537-1E1-58C

    $232.62

    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...

    5.3GPM 60PSI 120v NPT Learn More
  5. Remco

    Demand/Bypass

    5517-1E1-58C

    $217.33

    115v AC electric diaphragm pump. PROFLO 5500 OVERVIEW Engineered to withstand the most rigorous and punishing duty cycles, the ProFlo 5500 Series Pump is a top-line performer. We make this claim because we use the highest quality American Made pum...

    5.3/gpm 60psi 115v Learn More
  6. Remco

    FatBoy Demand Diaphragm Pump

    5518-1E1-94A

    $283.94

    THE PROFLO FATBOY PUMPS UP THE VOLUME WITH 7GPM 12vdc. Demanding industrial pump environments require precise engineering and quality components. ProFlo FatBoy was designed with both. To maximize the potential of all five diaphragm chambers, Remco...

    7GPM 60PSI 12VDC QC Learn More
  7. Remco

    115v Demand Pump 2.2GPM

    3313-1E1-52C

    $206.41

    115v Demand Pump 2.2GPM

    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....

    2.2GPM 60PSI 115AC Learn More
  8. Pumptec

    High pressure pump

    80134

    $412.59

    High pressure low volume electric pump. Pump has 2 sets of inlets and outlets. Pumptec 112V Pump 085 Bearing w/ M70 Motor - 120 Volt - 300 PSI 80134 Sandia Plastic [80134].

    Pump body is Teflon hard coated aluminum with 304SS plunger.

    POPULAR MOD...

    115v Learn More
  9. Remco

    24v Demand Pump

    5536-1E1-731A

    $217.33
    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 24DC Learn More
  10. Remco

    Street Sweeper Pump 100PSI Bi-pass

    5538-2I1-94A

    $340.42

    Street Sweeper pump.

    THE PROFLO FATBOY BYPASS PUMPS UP THE VOLUME WITH 7GPM. Demanding industrial pump environments require precise engineering and quality components in the ProFlo FatBoy was designed with both. To maximize the potential of all f...

    7GPM 100PSI 12VDC Learn More
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