Nelsen Water Solutions Fleck 9100 Twin Tank Water Softeners

Pentair Fleck Twin Control Valves

The Pentair Fleck 9100 Twin Tank control valve is a fiber-reinforced polymer valve body that is non-corrosive, and UV resistant. The control valves offer a continuous service flow rate of up to 21 gallons per minute, plenty of water for even the most demanding families!  The backwash capability accommodates softener tanks up to 16" with 8.5 GPM backwash. The 9000 valve has been engineered and tested to withstand the 10,000 cycles.

With the Pentair Fleck SXT controller, you get the added features of a fully electronic controller with a large blue back-lit LCD screen. Easy electronic programming with integral power backup in the event of power failure. Displays regeneration step and time remaining during regeneration as well as regeneration tonight or now option. LCD display alternates between time of day, volume remaining or days till regeneration, and tank in service. Programming is stored in memory and will not be lost due to power outages. The valve also keeps water usage history for diagnostics. 


Benefits of a Nelsen Water Solutions System

In the Bathroom

Your soap and shampoo will lather better. Your hair and skin will feel noticeably cleaner, softer, and not as dry. Additionally, there will be no soap scum or mineral deposits to clean off sinks, showers, tubs, and toilets.

In the Kitchen

Dishes will clean up more easily and be spot-free, without the gray film glass gets when etched by mineral-laden wear. Plus, hands will feel softer and look better.

In the Laundry

Clothes will be softer, cleaner, and brighter and last longer. Using soft water and pure soap products increases the life of clothing, towels, and linens by up to 33%. Without hard water service issues, washing machines will last longer, too.

Plumbing and Appliances

Appliances that use water will last longer and run better. Why? Because water heaters, washing machines, and dishwashers using hard water can wear out 30% faster.

Key Features

  • Controls available in Mechanical Time Clock or Meter and Electronic Time Clock or Meter
  • Fully adjustable 5-cycle control for an efficient and reliable water treatment system
  • Water use is monitored for peak efficiency and regenerates only when necessary, saving salt and water
  • Rugged-built electromechanical timer designed with heavy duty ⅜" wide plastic gears
  • Salt and water savings by using 100% capacity of the tank in service before switching to the second tank
  • Regenerates immediately when needed for continuous soft water
  • Regenerates with soft water keeping system clean for optimum operating efficiency and minimum maintenance
  • Time-tested, hydraulically-balanced piston for service and regeneration

  • Simple diagnostics and design provide for easy maintenance

  • High quality, chlorine resistant media bed, for years of continuous service featuring a uniform bead size and distribution for optimum flow rates

  • Gravel support bed shown used on larger systems

  • Basket style distribution system delivers evenly distributed and high quality flows

  • High quality, durable construction brine (salt) tank

  • Safety float system helps prevent overflow of the brine tank

Additional Resources



Brine Tank - Additional styles, colors, and sizes available.


Enpress Vortech™ Plate Style Tank - Vortech creates better backwashing and cleaning action of media and shorter backwashing requirements resulting in water savings.


Tank Jackets - Help reduce excess condensation that can occur in humid locations, available in black neoprene or high-gloss chrome or colored plastic with microfoam insulation.


Nelsen Water Solutions Fleck 9100 Twin SoftenersGrains Capacity 24,000 32,000 40,000 48,000 64,000 80,000 110,000
Grains Capacity (1) 22,500 30,000 37,000 45,000 60,000 75,000 105,000
Grains Capacity (2) 18,000 24,000 30,000 36,000 48,000 60,000 84,000
Cu. Ft. of Media (3) .75 1.0 1.25 1.5 2.0 2.5 3.5
Pounds of Media (3) 38 50 63 75 100 125 175
Service Flow Rate* 7 9 10 12 13 15 22
Overall Height 53" 57" 63" 63" 57" 63" 74"
Floor Space Req. 32" x 19" 33" x 19" 34" x 19" 34" x 19" 36" x 19" 37" x 19" 38" x 19"
Approx. Weight 151 lbs. 188
201 lbs. 232
292 lbs. 322 lbs. 425 lbs.

(1) Salt at 15 lbs. per cubic foot = 30,000 grains/cubic foot   (2) Salt at 9 lbs. per cubic foot = 24,000 grains/cubic foot   (3) Per Tank
*Note - due to varying water conditions, water pressures, and assembly materials the service flow rate should be used only as a guideline.
The standard resin is certified, however system media may vary based on water analysis • Capacities are based on resin manufacturer’s data • All flow rates are in Gallons Per Minute • All sizes and space required are in inches

Find A Local Nelsen Water Solutions Dealer