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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. All-Flo C150-FPK-TTKT-B70 PVDF Air Operated Double Diaphragm Pump Bolted Series

    All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump Bolted Series

    C150-FPK-TTKT-B70
    $9,879.18
    PVDF Kynar Air AODD Pump 3/4". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Replaces KT-15 Click here to Learn How to Size your Diaphragm Pum...
    1-1/2" KT-15 PVDF Learn More
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  2. All-Flo KT-10 PVDF PVDF Air Operated Double Diaphragm Pump Bolted Series

    All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump Bolted Series

    KT-10 PVDF
    $2,821.97
    PVDF Kynar Air AODD Pump 1/4". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Click here to Learn How to Size your Diaphragm Pump and for a Ma...
    Learn More
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  3. 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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  4. FatBoy Demand Diaphragm Pump

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

    Remco

    115v Demand Pump 5.3GPM

    5537-1E1-58C
    $332.00

    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 p...

    5.3GPM 60PSI 120v NPT Learn More
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  6. All-Flo A200-CA3-SS3E-000 Aluminum Air Operated Double Diaphragm Pump

    All-Flo Pumps

    Aluminum Air Operated Double Diaphragm Pump

    A200-CA3-SS3E-000
    $6,908.55

    Aluminum AODD Pump 2" NPT. Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Aluminum 2" connections are dual FNPT and Flange (ANSI 150#/DIN) design.

    ...
    2" Learn More
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  7. Remco demand pump for water

    Remco

    Demand/Bypass

    5517-1E1-58C
    $339.00

    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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  8. Remco 5536-1E1-731A 24v Demand Pump

    Remco

    24v Demand Pump

    5536-1E1-731B
    $236.00
    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
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  9. Remco - 3323-1E1-82B: 12v Demand Pump 2GPM

    Remco

    12v Demand Pump 2.2GPM

    3313-1E1-82B
    $196.58
    Capable of continuous heavy duty workloads, the 3300
    series has built a reputation as a solid and reliable industry
    performer. The 3300 series delivers consistent Professional
    Grade results for every job you give it.
    2.2 GPM (8.23 LPM) Demand 60 PSI (4.14 BAR) Viton Santoprene 3/4″ Quick Attach 12 VDC Learn More
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  10. Remco 5537-1E1-58C 115v Demand Pump 5.3GPM

    Remco

    115v Demand Pump 5.3GPM

    5537-1E1-65C
    $293.22

    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...

    5.3 GPM Demand 60 PSI Viton Santoprene 1/2″ FNPT 110/120 VAC Learn More
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