Nelsen Water Solutions C-Series Twin Tank

Residential & Light Commercial

You and your family deserve the finest quality water available. Quality you can feel each time you shower or feel the soft towel when drying after that shower by having soft water. Unlike a single-tank water softener, a twin-tank system allows continuous soft water 24/7. Each Nelsen Water Conditioner is designed to address specific water quality issues unique to your home, providing your family with outstanding water. The very best components, features, and state-of-the-art design go into every system, providing you with years of high-quality, conditioned water. The Twin Control Valve is one of the most advanced controls available, giving you soft water 24 hours a day, seven days a week, 365 days a year.

A Nelsen Water Solutions Twin tank water softener monitors your daily water usage and regenerates only when necessary. Regeneration is based on your actual water usage and regenerates at any time of the day or night. This saves you salt, water, and money. The twin-tank design means you always have a continuous supply of soft water, even during regeneration. While one tank is in service, the opposite tank regenerates, giving you all the advantages of continuous soft water.


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 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

  • High quality, chlorine resistant media bed, for years of continuous service
  • Optional softening resins available to target specific water issues
  • High quality brine (salt) tank, durable construction
  • Safety float system helps prevent overflow of the brine tank
  • Water use is monitored for peak efficiency
  • Regenerates only when necessary saving salt and water
  • Built-in backup of settings during power outages
  • Simple diagnostics and design provide for easy maintenance
  • Treated water brine refill
  • Two relays to control additional equipment
  • Double backwash feature, offers optimum regeneration, cleaning ability, and efficiency
  • 15 VDC transformer provides safe and easy installation

Additional Resources



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

Learn More

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

Learn More

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. 

Learn More

Nelsen Water Solutions C-Series Twin Softeners Grains 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) 76 100 126 150 200 250 350
Service Flow Rate* 7 9 10 12 13 18 22
Overall Height 52.5" 56.5" 52.5" 62.5" 56.5" 62.5" 73.5"
Floor Space Req. 41" x 16" 44" x 20" 42" x 20" 42" x 20" 50" x 20" 52" x 20" 56" x 20"
Approx. Weight 121 lbs. 144 lbs
173 lbs. 197 lbs
246 lbs. 315 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) Media is for each tank

* Due to varying water conditions, water pressures, and assembly materials, the service flow should only be used as a guideline • Capacities are based on resin manufacturer’s data • All flow rates are in Gallons Per Minute • All sizes and space required are in inches