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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

    T 63 Triplex Plunger 12.5hp Hollow Shaft

    TX1510G8

    $893.78
    TX Series 63, Triplex Plunger Pump.
    • Flanged for direct couple to gasoline engines (SAE J609)
    • Set screw for key way
    • Oversized bearings and dual sight glasses
    • Large, light weight connecting rods
    • Longer life low and high pressure seals
    • Forged...
  2. General Pump

    T 63 Triplex Plunger 4.3HP Solid Shaft

    TX1812S17

    $818.74
    TX Series 63, Triplex Plunger Pump. Solid Shaft.
    • Flex coupling and bell housing available for direct drive
    • Oversized bearings for long life
    • New generation seal system for longer life
    • Large, lightweight connecting rods
    • Forged brass manifold with ...
  3. General Pump

    T 63 Triplex Plunger 5.3HP Solid Shaft

    TX1512S17-5.3HP

    $665.33
    TX Series 63, Triplex Plunger Pump. Solid Shaft.
    • Flex coupling and bell housing available for direct drive
    • Oversized bearings for long life
    • New generation seal system for longer life
    • Large, lightweight connecting rods
    • Forged brass manifold with ...
  4. 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...
  5. General Pump

    T 69 Triplex Plunger 8.8hp

    TS1041

    $2,701.35
    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, an...
  6. All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump

    KN-5

    $1,971.59

    PVDF AODD Pump 1/2". All-Flo diaphragm pump has Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into. A050-SPK-TTKT-S70 Kynar pneumatic pump. All plastic air system are corrosion resistant. For pumping aggressive chemic...

    Kynar TFE 1/2" Learn More
  7. All-Flo Pumps

    PVDF Air Operated Double Diaphragm Pump

    KN-5E

    $1,759.44

    PVDF air operated double diaphragm pump. AODD Pump 1/2". All-Flo 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,...

    Kyner EPDM Santoprene Learn More
  8. General Pump

    TC 15 Triplex Plunger

    TC1508E175

    $1,007.75
    Triplex plunger pump, hollow shaft, flanged for direct couple to electric motor 1725rpm. New, over-sized connecting rods for ultimate crankcase performance. Forged brass manifold with an exclusive lifetime warranty. Ideal for all general cleani...
    56C Motor mount Learn More
  9. General Pump

    Triplex Plunger 4.7hp

    TC1809E175

    $898.78
    TC Series 60, Triplex plunger pump, hollow shaft, flanged for direct couple to electric motors (NEMA-56C). Forged brass manifold with an exclusive lifetime warranty. Ideal for all general cleaning and misting applications.
    • Die cast, anodized...
  10. General Pump

    Triplex Plunger High Flow

    TSF2019

    $3,242.71
    Triplex Plunger Pump, High Flow - Forged brass manifold with an exclusive lifetime warranty. Innovative seal design to extend seal life. New valve cap design improves hydrostatic performance.
    • Max. Inlet Pressure: 125 PSI
    • Min. Inlet Vacuum: 9 ft....
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