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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 AL-30E Diaphragm pump Aluminum Air Operated Diaphragm Pump

    All-Flo Pumps

    Aluminum Air Operated Diaphragm Pump

    AL-30E
    $3,110.25
    Aluminum AODD Pump 3". 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 .2...
    Aluminum EPDM 3" Learn More
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  2. Remco 5516-2E6-63A 12vdc Bypass Pump 4GPM

    Remco

    12vdc Bypass Pump 4GPM

    5516-2E6-63A
    $214.92

    New Model Number to Review: 5536-2E1-63B

    12v diaphragm pump with by-pass. Quick Connect QD ports accept various size fittings. Industrial pump environments require precise engineering and quality components - the demand pump was designed with bot...

    4GPM 60PSI 12VDC Buna QD Bypass Learn More
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  3. Remco_Fatboy.jpg

    Remco

    115v Demand Pump 4GPM

    5536-1E1-58C
    $325.00

    Demanding industrial pump environments require precise engineering and quality components. The demand pump was designed with both. Demand pumps operate as a positive displacement pump which has a pressure switch built in. When flow is open the pum...

    4GPM 60PSI 120v Learn More
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  4. 335H-96_6.gif

    AMT Pumps

    2" Diesel Pump

    336Z-96
    $5,034.98
    2" Mud pump. Powered by 4.8 HP Hatz diesel Engine, Electric Start. AMT 2" Diaphragm pumps features 2-stage, 44 to 1 gear reduction with a large diameter output gear and heavy duty ball bearing construction. Often referred to as Mud pumps, mudho...
    2" Learn More
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  5. Remco_Fatboy.jpg

    Remco

    12v Demand Pump 5.3GPM

    5537-1E3-82B
    $280.80

    Engineered to withstand the most rigorous and punishing duty-cycles, the Remco Professional Grade 5500 series pump is a top of the line performer.

    Made in the USA
    Professional Grade
    Factory tested performance and efficiency
    Superior vertical p...
    5.3GPM 60PSI 12v NPT Geolast Learn More
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  6. AMT_336g 2" gas mud diaphragm pump

    AMT Pumps

    2" Gas Powered Diaphragm Pump

    69-G633
    $2,656.25

    Mud pump. Powered by 4 HP Honda GX 120 Engine. AMT 2" Diaphragm pumps features 2-stage, 44 to 1 gear reduction with a large diameter output gear and heavy duty ball bearing construction. Often referred to as Mud pumps, mudhog or Sludge pumps, diap...

    Honda GX120 Learn More
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  7. Riverside_DP3h diaphragm pump

    Riverside

    3 in. Honda diaphragm pump

    DP3H
    $2,130.00

    Diaphragm pumps are positive displacement pumps. They pump a specific volume for each pump cycle. Diaphragm pumps move fluids more slowly than centrifugal pumps, but can handle mud and larger amounts of solids including abrasive materials. They al...

    5.5 hp Honda engine Learn More
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  8. Remco 5538-1i1-63A 100PSI Bypass

    Remco

    100PSI Bypass

    5538-1i1-63A
    $306.88

    NEW MODEL NUMBERS TO REVIEW: 5518-2I1-94A or 5538-2I1-94A

    THE PROFLO FATBOY® PUMPS UP THE VOLUME WITH 5.3gpm. Demanding industrial pump environments require precise engineering and quality components the ProFlo FatBoy® was designed with both. T...

    5.3/gpm 100psi 12VDC Learn More
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  9. Remco_demand pump

    Remco

    115v Demand Pump 2GPM

    3323-1E1-52C
    $206.41

    Demanding industrial pump environments require precise engineering and quality components. The demand pump was designed with both. Demand pumps operate as a positive displacement pump which has a pressure switch built in. When flow is open the pum...

    2.2 GPM Demand 60 PSI Viton Santoprene 3/8″ FNPT 110/120 VAC Learn More
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  10. Pulsafeeder 068-XA-AAAAXXX 68 GPD/60 PSI Metering Pump

    Pulsafeeder

    68 GPD/60 PSI Metering Pump

    068-XA-AAAAXXX
    $693.00
    68 GPD / 257.38 LPD 100 PSI metering pump 115 vac. 51 strokes / minute max. 1.0 Amps full load.

    Dimensions: 6.75" x 8.875" x 7.25" (H x W x D)

    Learn More
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