Commercial Twin Tank Water Softener

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Commercial Twin Tank Water Softener

Engineered for Continuous Soft Water Supply

Our Commercial Twin Tank Water Softener is designed for businesses that demand an uninterrupted supply of softened water. Featuring a true twin alternating design, one tank remains in service while the other regenerates, ensuring soft water is always available—even during regeneration cycles.

Built around industry-leading Clack control technology, these systems are available with:

  • Clack WS 1.5" EE Twin Alternating Valve
  • Clack WS 2" EE Twin Alternating Valve
  • Clack WS 3" EE Twin Alternating Valve

Each system is custom-engineered based on your water quality, peak flow requirements, and daily water consumption to ensure optimal performance and efficiency.

Ideal Applications

  • Restaurants
  • Hotels
  • Apartment Buildings
  • Manufacturing Facilities
  • Car Washes
  • Healthcare Facilities
  • Breweries & Beverage Production
  • Commercial Laundries
  • Schools & Universities
  • Office Buildings

Key Features

  • Continuous Soft Water Supply – Twin alternating design eliminates downtime during regeneration.
  • Custom Sized for Your Application – Systems are engineered specifically for your facility's water demand.
  • Commercial-Grade Construction – Heavy-duty fiberglass mineral tanks with industrial tank bases.
  • High-Capacity Resin Systems – Designed for demanding commercial and light industrial applications.
  • Advanced Clack Control Valves – Reliable, easy-to-program electronic controls with proven performance.
  • Reduced Salt & Water Consumption – Efficient regeneration cycles help minimize operating costs.
  • Scalable Design – Available in multiple tank sizes and valve configurations to accommodate a wide range of flow rates and capacities.

Why Choose a Twin Alternating System?

Unlike single-tank softeners that take the system offline during regeneration, a twin alternating system automatically switches to the standby tank when regeneration is required. This provides:

  • Continuous soft water 24/7
  • Improved operational efficiency
  • Greater resin utilization
  • Reduced risk of hard water breakthrough
  • Ideal performance for facilities with variable or around-the-clock water usage

3" System Specifications

Full specifications, installation data and component drawings for our 3" commercial softener systems are in the spec sheet below.

Download the 3" Spec Sheet (PDF)

3" Control Valve

Service flow rate 250 gpm @ 15 psi drop
Backwash flow rate 220 gpm @ 25 psi drop
Inlet / outlet / drain 3" female NPT (BSPT available)
Tank connection 6" flange or side mount
Operating pressure 20–125 psi
Water temperature 40–110 °F
Power 120 V AC, 60 Hz
Flow meter External 3" meter, 3.5–350 gpm, ±5%

Model Specifications (per resin tank)

Model Resin Tank (in) Brine Tank (in) Capacity @ 9 lb/ft³ Capacity @ 15 lb/ft³ Resin (cu ft) Service Flow (gpm) Backwash (gpm) Salt / Regen (lbs, 9 / 15)
WS3M-150 18 × 65 24 × 41 120,000 150,000 5 40 10 45 / 75
WS3M-210 21 × 62 24 × 50 168,000 210,000 7 45 13 63 / 105
WS3M-300 24 × 72 30 × 50 240,000 300,000 10 70 15 90 / 150
WS3M-450 30 × 72 39 × 48 360,000 450,000 15 105 25 135 / 225
WS3M-600 36 × 72 50 × 60 480,000 600,000 20 140 35 180 / 300
WS3M-900 42 × 72 50 × 60 720,000 900,000 30 200 45 270 / 450
WS3M-1200 48 × 72 50 × 60 960,000 1,200,000 40 250 65 360 / 600

Capacity in grains per resin tank. Tank sizes are diameter × height. Salt shown per regeneration at 9 and 15 lbs per cubic foot.

Twin Alternating Installation Data

Model Space Required L × W × H (in) Shipping Weight (lbs)
WS3-TA-300 86 × 30 × 90 2,045
WS3-TA-450 107 × 39 × 97 2,995
WS3-TA-600 130 × 50 × 99 3,935
WS3-TA-900 142 × 50 × 110 6,075
WS3-TA-1200 152 × 50 × 107 7,675

Each twin alternating model uses two resin tanks of the matching size above with a shared brine tank. Allow additional clearance for service access.

Request a Custom Quote

Every commercial application is different. To ensure proper sizing and performance, this product is available by quote only.

Our water treatment specialists will review:

  • Water hardness
  • Iron and manganese levels
  • Daily water consumption
  • Peak flow requirements
  • Operating schedule
  • Installation requirements

Based on this information, we'll design a system tailored specifically to your facility.

Request a Quote Today and our team will provide a custom recommendation along with pricing, specifications, and expected lead times. See all commercial water softeners.


Commercial Twin Tank Water Softener Reviews