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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.

Reciprocating Pumps - Diaphragm, Piston, Plunger

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  1. Pumptec

    Hard surface Pump motor set (hard scape pump)

    80346


    Pumptec 120 Volt pressure washer pump provides the best in pressure
    cleaning and pressure washing performance. The number one tile and
    grout pump. This electric pressure washer cleaner is one work horse
    in the pressure washing business and in pow...
  2. Flojet

    Duplex Diaphragm pump V

    G573205A


    Glass filled Polypropylene double diaphragm pump with Viton
    diaphragms and check valve seats. Springs are Hastalloy.

    Connections are 3/8" straight. Air connection is 1/4" BARB
    brass.SALE!!!



  3. All-Flo

    Stainless Steel Air Operated Double Diaphragm Pump

    SE-10

    Stainless Steel AODD Pump 1". Lube-free air valve, Non-stalling, No
    vent holes for corrosive fumes to get into, All plastic air system
    are corrosion resistant. Non-electrical. Models available in PP,
    PVDF, Nylon, Conductive Nylon, Al and 316SS ...
  4. Remco

    Demand Spray Pump

    2240-1B1-10E


    Demand Spray Pump.
    Far and away the best selling 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 hours typica...
    12vdc
  5. Pulsafeeder

    Metering Pump - 30 GPD/80 PSI

    LC54SA-PTC1


    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 ...
  6. Flojet

    Demand Spray Pump

    LF152421


    Demand Spray Pump.
    Far and away the best selling pump in the industry. Choose from
    standard models or configure to meet the special needs of your OEM
    application. Long-life (2000 hours typical) motors have either a
    chemically resistant plastic ho...
    12vdc
  7. Pulsafeeder

    METERING PUMP 12GPD/100 PSI

    LPA3MA-PTC1


    The Series E Plus offers the option to choose between4-20mAfor
    external pace inputs for automatic control.

    • 20 flow/pressure envelops

    • 100:1 turn down ratio

    • Optional 4-20mA with stop function

    • Optional External Pacing with stop function

    • Auto-off-Ma...
  8. All-Flo

    Diaphragm Pump 1.5" PolyPro

    PT-15 Diaphragm pump


    Diaphragm pump. PolyPro AODD Pump 1 1/2". Lube-free air valve,
    Non-stalling, No vent holes for corrosive fumes to get into, All
    plastic air system are corrosion resistant. Non-electrical. Models
    available in PP, PVDF, Nylon, Conductive Nylon, Al ...
    Heavy Duty Bolted
  9. All-Flo

    PP Air Operated Double Diaphragm Pump

    PB-15


    PolyPro AODD Pump 1 1/2". Lube-free air valve, Non-stalling, No
    vent holes for corrosive fumes to get into, All plastic air system
    are corrosion resistant. Non-electrical. Models available in PP,
    PVDF, Nylon, Conductive Nylon, Al and 316SS from ....
  10. All-Flo

    PP Air Operated Double Diaphragm Pump

    PE-05


    PolyPro Air AODD Pump 1/2". 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 Material ...
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