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Twin Alternating Water Softener with Fleck Valves

Twin softeners are ideal for situations where uninterrupted flow of soft water is a must. One resin tank is always in service, while the other tank is in standby. When the meter determines that the resin is near its capacity, it will switch the tank in standby to be in service, and the tank containing the exhausted resin will begin regeneration and wait in standby until the other tank is ready for regeneration.

Hard Water contains dissolved minerals in the form of Calcium (Ca), Magnesium (Mg), and Iron (Fe). Removal of these minerals is accomplished by softening the water through an ion exchange process using a water softener. As the water flows through the mineral tank of the water softener, the dissolved minerals become attached to the resin, creating soft water. Over a period of time the resin in the water softener will become exhausted, and the water softener will regenerate using a brine solution produced from the salt in the brine tank.

Twin Water Softener Model No.* Flow Rate** (gpm) Back Wash Flow
(gpm)		 Volume of Resin (cu.ft.) Resin Tank
(Dia."×H")		 Brine Tank
(Dia."×H")		 Fleck Valve In/Out Conn. Approx Ship Weight
(lb)
5gpm/ft² 15gpm/ft² Softening Resin (PER TANK) Softening Resin (TOTAL)
W-S744ST 1 4 1.5 0.50 1.00 7×44 18×33 9000 ¾" 160
W-S844ST 2 5 2 0.60 1.20 8×44 18×33 9000 ¾" 170
W-S940ST 2 6 2 0.75 1.50 9×40 18×40 9000 ¾" 190
W-S1054ST 2 7 3 1.25 2.50 10×54 18×40 9000 ¾" 265
W-S1252ST 4 12 4 1.75 3.50 12×52 18×40 9000 1" 340
W-S1354ST 4 14 5 2.00 4.00 13×54 18×40 9000 1" 415
W-S1465ST 5 16 6 3.00 6.00 14×65 24×41 9000 1" 610
W-S1665ST 7 21 7 3.50 7.00 16×65 24×41 9000 1" 705
W-S2162ST 13 36 12 6.00 12.0 21×62 30×48 9500 1.5" 1,185
W-S2472ST 15 47 15 8.00 16.0 24×72 39×48 9500 1.5" 1,760
W-S3072ST 24 74 25 12.5 25.0 30×72 39×48 2900 (2) 2" 2,925
W-S3672ST 35 95 35 17.0 34.0 36×72 39×60 3150 (2) 2" 3,760
W-S4272ST 48 144 48 23.0 46.0 42×72 42×60 3900 (2) 3" 5,730
W-S4872ST 60 188 60 30.0 60.0 48×72 60×60 3900 (2) 3" 8,520

Ordering Notes:

* Softeners are available with several options of valve voltages. Please add the appropriate voltage code to the end of the model when ordering.
110v/60Hz = 116 Example: W-S744ST-116
220v/60Hz = 216 Example: W-S744ST-216
220v/50Hz = 215 Example: W-S744ST-215

**5 gpm per sq. ft. of media is the best design condition for filtration. For relatively clean water, you may go up to design criteria of 15 gpm per sq. ft. Backwash flow rate based on 25 psi pressure drop.


Skid mounting, control panel and custom sizes and configurations are available upon request.

Twin Alternating Water Softener with Optional SS Jacket

Skid Mounted Commercial Water Softener

Custom Industrial Media Installation
Twin Alternating Water Softener with Optional SS Jacket Skid Mounted Commercial Water Softener Custom Industrial Media Installation
  • Uninterrupted Flow of Soft Water
  • Higher Quality Drinking Water
  • Prevents Hard Water Scale
  • Prevents Staining on Bathroom & Kitchen Fixtures as well as Dishes, Dishwasher, Washing Machine and Clothes
  • Significantly Reduces Soap and Cleaning Product Consumption
  • Provides Excellent Grooming & Cosmetic Benefits
  • Reduces Water Heating Costs
  • Prolongs the Life of Water Heaters, Icemakers, Dishwashers, Coffeemakers, Plumbing Fixtures, and All Downstream Equipment.
  • Use as Pretreatment to Reverse Osmosis will Prevent Membrane Scaling and Prolong Membrane Life
  • High quality, high capacity softening resin which complies with FDA regulations for potable water applications and is NSF/ANSI-61 Certified for material safety
  • Fully automated with state of the art Pentair Fleck brand electromechanical control valve
  • High quality FRP/Composite Resin Tank, rated at 150 psi maximum operating pressure and 120°F maximum operating temperature (Optional stainless steel jackets are available for 9"-16" diameter tanks upon request.)
  • Regeneration:  Regeneration:  Meter Immediate (Pressure differential options are available upon request.)
  • Manufactured in our ISO 9001:2015 Certified Facilities
  • Backed by our Experienced Technical Support Staff
Twin Alternating Water Softeners Manufactured in our ISO Certified Facility Member of Water Quality Association Pentair Fleck Control Valve for Twin Water Softeners
  • Whole-House Water Softening
  • Water Softening for Hotels, Spas, Resorts
  • Pretreatment to RO and other Water Treatment Systems
  • Beverage
  • Food Processing
  • Spot Free Rinse/Car Wash 
  • Labs
  • Pharmaceutical
  • Humidification
  • Misting
  • Rinse Water
  • Bottled Water
  • Ice Makers

Replacement Components

Optional Equipment: Stainless Steel Jackets (Add-On)

Stainless Steel Jackets are available for 9” to 16” Diameter Twin Alternating Water Softeners.  To include a SS jacket with your water softener, please add the appropriate part number below to your RFQ or order.

Twin Alternating Water Softener with Optional SS Jacket
Model No. (2 Needed Per System) For Tank Size
A950-940 9" × 40"
A950-1054 10" × 54"
A950-1252 12" × 52"
A950-1354 13" × 54"
A950-1465 14" × 65"
A950-1665 16" × 65"

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