CWSI Industrial Series Twin Water Softeners | Model# CWSI-900-3


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The ‘CWSI’ 2” and 3” water softener systems are engineered to handle higher flow rates. Whether its mineral scale in boiler feed or supply water for a car wash, the CWSI offers a robust and efficient solution for reducing mineral scale, soap usage, and energy consumption in the plumbing and other water using equipment.
The multiple tank design offers a modular platform with several configuration options that brings a customized water treatment plan that fits most demands. The corrosion resistant fiberglass reinforced polyethylene tank design and reliable top mounted valve will provide many years of service.
Standard Features
• Corrosion resistant fiberglass tanks
• Piston actuated, multiport, brass control valves
• Timeclock or meter initiated regeneration cycle
• Brine tank assembly with safety overflow
• Sodium form cation exchange resin
• Water hardness testing kit


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Manufacturer CWS
Series 3" Industrial Twin Water Softener
Model Number CWSI-900-3
Part Number CWSI-900-3-D
Description 900,000 Grain Capacity Duplex Softener System
Unit Operates As Twin Alternating
One 3" Water Meter Included
Inlet/Outlet Connection Size 3"
Inlet/Outlet Connection Type FNPT
Maximum Operating Pressure 120 PSI
Shipping Weight 6,750 Pounds
Continuous Service Flow Rates 330 GPM
Peak Service Flow Rates 450 GPM
Back Wash Flow Rates 35 GPM
Service Pipe Size 3"
Maximum Salt Usage 900,000 Grains
Overall Length 144"
Minimum Exchange Capacity 600,000 Grains
Overall Width 42"
Overall Height 110"
Resin Volume 30 Cubic Feet / Tank
Softener Tank Length 42" x 72"
Brine Tank Length 42" x 60"
Salt Storage 2000 Pounds

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