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Water System Pumps & Parts

A pressure pump is an essential part of any household water system, that is not connected to a water utility service. Typically, a pressure pump will be used to pump water from your holding tank to the rest of your water system. Some water systems may require more than one pump (a deep well pump or a transfer pump, for filling the holding tank), while other systems may do well with just the pressure pump.

Properly designed systems will also include an inlet filter, to protect the pump from waterborne debris. We carry a variety of Flojet inlet strainers. The U.S. 40 Mesh strainer screen will block any particle larger than 0.0165 inches (420 microns) from entering the pump, and the transparent covers allow quick visual inspection of the filter screen. You can remove the cover to easily rinse any debris out, if it becomes clogged.

Most water pressure pumps should also be used with an accumulator/pressure tank. Unless you purchase a variable speed pump (like the Flojet R4525), an accumulator tank will help reduce pump cycling, and sudden changes in water pressure ("chatter" or "water hammering") in your pipes. An accumulator tank is installed after the pressure pump and matched to the pump's pressure switch settings, to hold a small reserve of pressurized water to supply a smooth, constant flow of water.

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  1. 20406-002A

    Flojet 20406-002A Pump Head, 4325 Series

    $143.64

    • Replacement pump head kit
    • Part #7 on exploded diagram (includes parts 1-4)
    • Fits Flojet 4305,4325,2840,2880-series pumps
    Learn More
  2. 20409-043

    Flojet 20409-043 2800/4000 Service Kit

    $63.02

    • Service and repair kit for the following models
    • R4525-743 and R4515-743
    • 4406 series, 4300 series, 2800 series
    • See below for detailed list
    Learn More
  3. 20419-001 Flojet 4306/4406 Lower Housing

    20419-001 Flojet 4306/4406 Lower Housing

    $67.19

    • Lower housing assembly
    • Fits following Flojet models:
    • 4306-500, 4306-501, 4406-043, 4406-143 and 4406-343
    Learn More
  4. 20419-002 Flojet Lower Housing Assy: 4305, 4325, 2840, 2880

    20419-002 Flojet Lower Housing Assy: 4305, 4325, 2840, 2880

    $67.19

    • Lower housing assembly
    • Fits following Flojet models:
    • 4305-144, 2840 series, 2880 series, 4325 series
    • See below for detailed model list
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  5. 20799-000

    Flojet 20799 1.1 Gal. Water Pressure Accumulator Tank

    $155.93

    • 1.1 gallon accumulator tank
    • Reduces pump cycling and water pressure fluctuations
    • Maximum 100psi working pressure
    • Default pressure: ~20psi
    • Can be adjusted to fine-tune performance
    Learn More
  6. 21046-057

    Flojet 21046-057 Service Kit for 2100-12/694/740/916 pumps

    $48.39

    • Service and repair kit for the following models:
    • 2100-12, 2100-694, 2100-740, 2100-916
    Learn More
  7. 2009-004A

    Flojet 2009-004A, 2100 12V Pump Motor

    $101.91

    • 12VDC Flojet replacement pump motor
    • Fits 12V 2100-series pumps
    Learn More
  8. 20132-000

    Flojet 20132-000 Replacement Grommets

    $5.28

    • Four (4) replacement santoprene grommets
    • Used for mounting pump diaphragm
    • For Flojet pumps
    Learn More
  9. 20403-040

    Flojet 20403-040 Quad Pump Replacement Diaphragm

    $21.34

    • Santoprene diaphragm replacement kit
    • Includes diaphragm, santoprene grommets, and mounting screws
    • For 4300/4325/4406-series Flojet Quad pumps
    Learn More
  10. Flojet 5gpm Variable Speed Drive Water Pump

    Flojet 4524 5gpm 115VAC Quad VSD Pump (Plug-in)

    $320.24

    • 5gpm AC-powered water pump
    • Constant water pressure
    • Low amp draw variable-speed motor
    • No pressure tank or pressure switch
    • Plugs in to regular 120VAC power outlet
    Learn More

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