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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. Remco 5536-2E3-63B 12vdc Bypass Pump 4GPM

    Remco

    12vdc Bypass Pump 4GPM

    5536-2E3-63B
    $214.92

    12v diaphragm pump with by-pass for bleach used in house exterior cleaning. Quick Connect ports accept various size fittings. Industrial pump environments require precise engineering and quality components - the demand pump was designed with both....

    4GPM 60PSI 12VDC FKM NPT Bypass Learn More
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  8. Remco 5537-1E1-58C 115v Demand Pump 5.3GPM

    Remco

    24v Demand Pump 5.3GPM

    5537-1E1-73A
    $219.00
    24VDC demand pump

    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 flo...

    5.3GPM 60PSI 24v NPT FKM Learn More
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  9. Remco_demand pump

    Remco

    115v Demand Pump 1GPM

    3321-1E1-52C
    $206.41

    Diaphragm pump with automatic switch. Demand

    Demanding industrial electric 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 h...

    1GPM 60PSI 115AC Learn More
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  10. Remco_demand pump

    Remco

    Bypass Pump 2GPM

    3321-2E1-82A
    $206.41

    Industrial pump environments require precise engineering and quality components the bypass pump was designed with both. For its size, it is one of the most powerful and productive diaphragm pumps you can buy, pumping up to 2.0 gallons per minute. ...

    2GPM 60PSI 12v Learn More
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