CIS Industrial Series Twin Water Softeners | Model# CIS-900-2-1/2

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The CIS Series water softener system offers the commercial or institutional facility a robust and efficient solution for reducing mineral scale, soap usage, and energy consumption in their plumbing and other water-using equipment.
The standard, all-steel exterior design will be reliable for many years of service. A modular platform allows for single, twin, or triplex tank designs to be easily configured to meet the exact flow requirements matched with the incoming water quality. Numerous custom engineered options are available to meet most specifications.
Standard Features
• Carbon steel resin tanks with epoxy-lined interior
• Water activated diaphragm style control valves
• Volume and/or time initiated regeneration cycle
• Polyethylene brine tank assembly with injector
• Sodium form cation exchange resin
• Inlet/Outlet tank sampling valves
• Water hardness testing kit
• Factory Hydro-tested at 100 psig


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Manufacturer CWS
Series Commercial Twin Water Softener
Model Number CIS-900-2-1/2
Part Number CIS-900-2-1/2
Shipping Weight 6,488 Pounds
Continuous Service Flow Rates 300 GPM
Peak Service Flow Rates 436 GPM
Back Wash Flow Rates 45 GPM
Service Pipe Size 2-1/2"
Drain Pipe Size 2"
Maximum Salt Usage 900,000 Grains
Overall Length 163"
Minimum Exchange Capacity 600,000 Grains
Overall Width 60"
Overall Height 88"
Resin Volume 30 Cubic Feet / Tank
Softener Tank Length 42" x 60"
Brine Tank Length 42" x 60"
Salt Storage 1,900 Pounds
Minimum Regeneration per Salt Refill 4
Maximum Regeneration per Salt Refill 10

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