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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. Pumptec

    Hard surface Pump motor set (hard scape pump)

    80346

    $1,411.42
    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. All-Flo Pumps

    H Series Sanitary & Hygienic

    H050-THL-PTTT-G70

    $3,498.00
    1/2” (13mm) HDPE/ Polished 316L Stainless Steel. Suction lift capability may vary depending on the construction materials and application parameters. The range is from 16.4 feet dry to 30 feet in a primed condition. Tri Clamp Click here to ...
  3. All-Flo Pumps

    PP Air Operated Double Diaphragm Pump

    C150-FPP-SSPE-B70

    $2,653.46
    PolyPro Air AODD Pump 1.5". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical, pneumatic pump for chemicals. Click here to Learn How to Size your D...
  4. All-Flo Pumps

    Nylon Air Operated Double Diaphragm Pump

    A025-SPK-TTKV-S70

    $584.79
    Nylon 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. Replaces RDD-025 Models available in PP, PVDF, Nylon, Conductive Nylon, ...
    1/4" Learn More
  5. 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
  6. Flojet Pumps

    Explosion Proof beverage alcohol pump for high proof spirits

    G70C202A

    $623.00

    Little Explosion Proof Alcohol Pumps are the best for high proof beverage alcohol.

    All of the wetted parts are completely resistant to ethanol, alcohol and other low flash point flammable liquids. G70C202A


    The Model G70C is designed to be the ul...

    G70C ATEX Kalrez® Air Operated Diaphragm Pump for alcohol and high proof spirits Learn More
  7. Flojet Pumps

    Duplex Diaphragm pump

    G573205A

    $299.00
    Glass filled Polypropylene double diaphragm pump with FKM diaphragms and check valve seats. Springs are Hastalloy.

    Connections are 3/8" straight. Air connection is 1/4" BARB brass. Air operated diaphragm pumps used for cleaning chemicals an...

    3/8" FKM Learn More
  8. All-Flo Pumps

    Stainless Steel Air Operated Double Diaphragm Pump

    A100-NA3-SS3E-B70

    $2,137.15

    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 fro...

    1" 316SS Learn More
  9. 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
  10. 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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