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City Or Well water that contains high levels of minerals as magnesium or calcium. Water softeners are  designed to  reduce the amount or effects of minerals in your home’s water system.
  • Water Problems
  • Shop Systems
    • Well Water Systems
    • City Water Systems
    • Water Softeners
    • Iron & Manganese
    • Sulfur / Rotten-Egg Odor
    • Reverse Osmosis
    • UV & Disinfection
    • Arsenic / Fluoride / PFAS
    • Salt-Free / Scale Prevention
  • Commercial
    • Commercial & Industrial Systems
    • Commercial Water Softeners
    • Commercial Reverse Osmosis
  • Parts & Media
    • Control Valves & Parts
    • Tanks & Accessories
    • Filter Cartridges
    • Filter Housings
    • Resin & Filter Media
    • RO Components
    • UV Replacement Parts
  • Brands
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    • How-To Videos
    • Manuals Library
    • FAQ
  • Get a Quote
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Search results

  • Fleck 3900 450K Grains Water Softener Water Softener Plus

    Fleck 3900 Commercial Water Softener — 10–120 cu ft (1–3 Tanks)

    Fleck 3900 Commercial Water Softener — 10–120 cu ft (1–3 Tanks)

    Request a quote
  • PENTAIR WATER FILTRATION VALVE 3900 NXT2 Water Softener Plus

    PENTAIR VALVE 3900 NXT2

    PENTAIR VALVE 3900 NXT2

    Regular price $7,493.99
    Regular price Sale price $7,493.99
  • WSP 120 cu. ft. Whole House Water Softener - Commercial

    Fleck 3900 Commercial Water Softener — 10–120 cu ft (1–3 Tanks)

    Fleck 3900 Commercial Water Softener — 10–120 cu ft (1–3 Tanks)

    Request a quote
  • WSP Fleck 3900 control valve with WaterSoftenerPlus Mylar on upper digital controller, lower service status panel preserved

    PENTAIR VALVE 3900 NXT2

    PENTAIR VALVE 3900 NXT2

    Regular price $7,493.99
    Regular price Sale price $7,493.99
  • Fleck  Drive Motor, 3900 110V

    Fleck Drive Motor, 3900 110V

    Fleck Drive Motor, 3900 110V

    Regular price $291.46
    Regular price Sale price $291.46
  • Fleck 3900 Lower PH Control Valve, 24V NXT2/XT — FL62103-59, Fleck 3900 Lower PH, 24v, NXT2, XT, 62103-59

    Fleck 3900 Lower PH Control Valve, 24V NXT2/XT — FL62103-59, Fleck 3900 Lower PH, 24v, NXT2, XT, 62103-59

    Fleck 3900 Lower PH Control Valve, 24V NXT2/XT — FL62103-59, Fleck 3900 Lower PH, 24v, NXT2, XT, 62103-59

    Regular price $792.99
    Regular price Sale price $792.99
  • Fleck 3900 Lower PH Control Valve, 24V NXT2/XT — FL62103-59, Fleck 3900 Lower PH, 24v, NXT2, XT, 62103-59

    Fleck 3900 Lower PH Control Valve, 24V NXT2/XT — FL62103-59, Fleck 3900 Lower PH, 24v, NXT2, XT, 62103-59

    Fleck 3900 Lower PH Control Valve, 24V NXT2/XT — FL62103-59, Fleck 3900 Lower PH, 24v, NXT2, XT, 62103-59

    Regular price $792.99
    Regular price Sale price $792.99
  • Reliable Fleck 3900 Piston Lower for Enhanced Water Softener Performance

    Fleck 3900 piston lower valve part without hard water bypass — FL60107-10, Fleck 3900 Piston Lower, No Hrd Wtr Byps, 60107-10

    Fleck 3900 piston lower valve part without hard water bypass — FL60107-10, Fleck 3900 Piston Lower, No Hrd Wtr Byps, 60107-10

    Regular price $563.99
    Regular price Sale price $563.99
  • WSP Valve Head (WSP-VH-3900)

    Upper powerhead for Fleck 3900 valve, 24V — FL62103-50, 3900 Upper Powerhead, 24V, NXT2, XT, 62103-50

    Upper powerhead for Fleck 3900 valve, 24V — FL62103-50, 3900 Upper Powerhead, 24V, NXT2, XT, 62103-50

    Regular price $1,208.99
    Regular price Sale price $1,208.99
  • Fleck 3900 Seal Kit, Lower, 60132 (FL60132)

    Fleck 3900 Seal Kit, Lower, 60132 (FL60132)

    Fleck 3900 Seal Kit, Lower, 60132 (FL60132)

    Regular price $157.73
    Regular price Sale price $157.73
  • Fleck 3900 piston lower for hard water bypass — FL60107-00, Fleck 3900 Piston Lower, Hard Wtr Bypss, 60107-00

    Fleck 3900 piston lower for hard water bypass — FL60107-00, Fleck 3900 Piston Lower, Hard Wtr Bypss, 60107-00

    Fleck 3900 piston lower for hard water bypass — FL60107-00, Fleck 3900 Piston Lower, Hard Wtr Bypss, 60107-00

    Regular price $603.99
    Regular price Sale price $603.99
  • Reliable Fleck Valve Upper Powerhead for Efficient Water Softener Control

    Upper powerhead for Fleck 3900 valve, 24V — FL62103-50, 3900 Upper Powerhead, 24V, NXT2, XT, 62103-50

    Upper powerhead for Fleck 3900 valve, 24V — FL62103-50, 3900 Upper Powerhead, 24V, NXT2, XT, 62103-50

    Regular price $1,208.99
    Regular price Sale price $1,208.99
  • Fleck Drv Assm, 3150, 3900 Upr, Sys 5or7

    Fleck Drv Assm, 3150, 3900 Upr, Sys 5or7

    Fleck Drv Assm, 3150, 3900 Upr, Sys 5or7

    Regular price $730.32
    Regular price Sale price $730.32
  • FL60131 Fleck Upper Seal Kit: Ensure Leak-Free Performance and Extend Your Water Softener's Life

    Fleck Upper Seal Kit, 3150 & 3900, 60131 (FL60131)

    Fleck Upper Seal Kit, 3150 & 3900, 60131 (FL60131)

    Regular price $135.88
    Regular price Sale price $135.88
  • Fleck Drive Motor, 220v, SP

    Fleck Drive Motor, 220v, SP

    Fleck Drive Motor, 220v, SP

    Regular price $234.25
    Regular price Sale price $234.25
  • Reliable Fleck Valve Piston Assembly for Optimal Water Softener Performance

    Fleck 3900/3150 Piston Assy. Standard, 60106-00 (FL60106)

    Fleck 3900/3150 Piston Assy. Standard, 60106-00 (FL60106)

    Regular price $307.99
    Regular price Sale price $307.99
  • Fleck O-Ring, 3900 Adptr Coupling

    Fleck O-Ring, 3900 Adptr Coupling

    Fleck O-Ring, 3900 Adptr Coupling

    Regular price $18.62
    Regular price Sale price $18.62
  • Fleck O-Ring -442 (3900)

    Fleck O-Ring -442 (3900)

    Fleck O-Ring -442 (3900)

    Regular price $26.70
    Regular price Sale price $26.70
  • Fleck 3 Impeller Assy

    Fleck 3 Impeller Assy

    Fleck 3 Impeller Assy

    Regular price $248.00
    Regular price Sale price $248.00
  • Fleck 1800 BV Inj. Nozzle #4green

    Fleck 1800 BV Inj. Nozzle #4green

    Fleck 1800 BV Inj. Nozzle #4green

    Regular price $39.84
    Regular price Sale price $39.84
  • Fleck 1800 BV Inj. Nozzle #6wht

    Fleck 1800 BV Inj. Nozzle #6wht

    Fleck 1800 BV Inj. Nozzle #6wht

    Regular price $41.98
    Regular price Sale price $41.98
  • Fleck 1800 BV Injector Throat, #4 Green

    Fleck 1800 BV Injector Throat, #4 Green

    Fleck 1800 BV Injector Throat, #4 Green

    Regular price $109.72
    Regular price Sale price $109.72
  • PENTAIR VALVE 3900 NXT2

    Camp Dennison, OH 45111 — 3900+450

    December 11, 2025
    Blog

    Camp Dennison, OH 45111 — 3900+450

    December 11, 2025
    Blog
  • Upper powerhead for Fleck 3900 valve, 24V — FL62103-50, 3900 Upper Powerhead, 24V, NXT2, XT, 62103-50

    3900+450 in Naukati Bay, 99921

    November 19, 2025
    Blog

    3900+450 in Naukati Bay, 99921

    November 19, 2025
    Blog
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