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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. General Pump

    TriPlex Plunger Pump 7.0HP

    TS1511GR

    $1,459.06
    T Series 47, Triplex Plunger Pump with 1" gear box for J609B engine.
    • The preferred pump frame in the pressure cleaning industry
    • Forged brass manifold with an exclusive lifetime warranty
    • Large-capacity, die-cast, anodized aluminum oil-bath crankc...
  2. General Pump

    EKZ 3plex plunger 7.1hp

    EKZ22

    $15,949.64
    EKZ Series, Triplex Plunger Pump with 316 SS Manifold and Wetted Parts, including Valve Plate and Seat**Max. Inlet Pressure: 45 PSI**Max. Fluid Temperature: 140FPump Dimensions: 18.2" x 17.5" x 7.3"

    Click here to view more information on this pu...

  3. General Pump

    EZ 44 3plex 7.2hp Hollow Shaft

    EZ2542E

    $1,094.75
    EZ 44 E Triplex Plunger Pump with Hollow Shaft, Flanged for Direct Couple to Electric Motors (NEMA-184TC) - Forged brass manifold with an exclusive lifetime warranty.
    • Ideal for all pressure cleaning and washing applications
    • Solid ceramic plu...
  4. General Pump

    EZ 44 3plex 7.2hp Solid Shaft

    EZ2542S

    $1,045.45
    EZ 44 S Triplex Plunger Pump with Solid Shaft - Forged brass manifold with an exclusive lifetime warranty.
    • Solid ceramic plunger design
    • Flex coupling and bell housing available for direct drive
    • Die-cast, anodized aluminum, oil-bath crankcase
    • Pre...
  5. General Pump

    T 69 Triplex Plunger 7.4hp

    T41

    $2,691.20
    T Series 69 Triplex Plunger Pump, Solid Shaft--The industry's choice for high-flow applications. Ball bearings and over sized connecting rods for maximum life.
    • Forged brass manifold with an exclusive lifetime warranty
    • Large Capacity Die-cast...
  6. General Pump

    TriPlex Plunger Pump 6.5hp

    TS1711GR

    $1,484.08
    T Series 47, Triplex Plunger Pump with 1" gear box for J609B engine.
    • The preferred pump frame in the pressure cleaning industry
    • Forged brass manifold with an exclusive lifetime warranty
    • Large-capacity, die-cast, anodized aluminum oil-bath crankc...
  7. General Pump

    TriPlex Plunger Pump 6.8hp

    TS1321

    $1,300.65
    T Series 47, Triplex Plunger Pump.
    • The preferred pump frame in the pressure cleaning industry
    • Forged brass manifold with an exclusive lifetime warranty
    • Large-capacity, die-cast, anodized aluminum oil-bath crankcase
    • Over-sized connecting rods for...
  8. General Pump

    TriPlex Plunger Pump 7.0HP

    TS1321GR

    $1,459.06
    T Series 47, Triplex Plunger Pump with 1" gear box for J609B engine.
    • The preferred pump frame in the pressure cleaning industry
    • Forged brass manifold with an exclusive lifetime warranty
    • Large-capacity, die-cast, anodized aluminum oil-bath crankc...
  9. General Pump

    TriPlex Plunger Pump 7.2hp

    TS1711

    $1,459.06
    T Series 47, Triplex Plunger Pump.
    • The preferred pump frame in the pressure cleaning industry
    • Forged brass manifold with an exclusive lifetime warranty
    • Large-capacity, die-cast, anodized aluminum oil-bath crankcase
    • Over-sized connecting rods for...
  10. General Pump

    TT 51 Triplex Plunger 7.2hp

    TT2035GBF

    $715.36
    TT Series 51, Triplex plunger pump, hollow shaft, SAE J609A Flanged for direct couple to gasoline engines.
    • Forged brass manifold with exclusive lifetime warranty
    • Die cast, anodized aluminum, oil-bath crankcase
    • Solid ceramic plungers with continu...
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