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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 - 2240-1B1-101

    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
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  2. Remco - 2240-1B1-10E

    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
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  3. Pulsafeeder LC54SA-PTC1 Metering Pump - 30 GPD/80 PSI

    Pulsafeeder

    Metering Pump - 30 GPD/80 PSI

    LC54SA-PTC1
    $642.00
    Our lowest cost model; Manual function control for stroke length; Highly reliable timing circuit; EMI resistant; Thermally protected solenoid with auto-reset, Bleed valve assembly. Four compact and rugged models with capacities up to 30 GPD @ 80 ...
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  4. Pulsafeeder LPA2SA-PTC1 Metering Pump 6 GPD/150 PSI

    Pulsafeeder

    Metering Pump 6 GPD/150 PSI

    LPA2SA-PTC1
    $928.53
    The Series E Plus offers manual control over stroke length andstroke rate.
    • 20 flow/pressure envelops
    • 100:1 turn down ratio
    • Auto-off-Manual selection switch with indicator lights
    • Built in fuse
    • Clear hinged cover over controls for water resistance...
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  5. Pulsafeeder LB04SA-PTC1 Chemical Metering Pump

    Pulsafeeder

    Chemical Metering Pump

    LB04SA-PTC1
    $1,291.08
    Chemical metering pump. 25GPD The Series A Plus offers manual control over stroke length and stroke rate. Head mat'l is glass-filed PPL.
    • 4 distinct flow/pressure envelops
    • 100:1 turn down ratio
    • Internally dampened to reduce noise - ideal f...
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  6. Pulsafeeder LPB2SA-PTC1 Metering Pump 5 GPD/250 PSI

    Pulsafeeder

    Metering Pump 5 GPD/250 PSI

    LPB2SA-PTC1
    $848.16
    The Series E Plus offers manual control over stroke length andstroke rate.
    • 20 flow/pressure envelops
    • 100:1 turn down ratio
    • Auto-off-Manual selection switch with indicator lights
    • Built in fuse
    • Clear hinged cover over controls for water resistance...
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  7. aquatec_5538-1e1-94a.jpg

    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
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  8. Remco 5537-1E1-58C 115v Demand Pump 5.3GPM

    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
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  9. Remco demand pump for water

    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
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  10. Remco 5518-1E1-94A FatBoy Demand Diaphragm Pump

    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
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