Features: 1) Most efficient water softener 2) Removing calcium, magnesium, sediment 3) Extremely economical water usage 4) Unsurpassed salt efficiency 5) Imported ion exchange resin 6) High service flow rate 7) Reliable fully automatic controls 8) Metered electronic on-demand processor 9) Blending bypass features 10) Automatic bypass during regeneration 11) Self-sanitizing feature 12) State-of-the-art performance 13) Outstanding warranty and products assurance 14) Easy to use: just set the time, add salt, and forget it 15) Canature water brings softer skin, shinier hair, easier cleaning, delicious water, spot-free dishes, and brighter laundry to your family Specifications: 1) Control valve: a) GE255/740 b) Made in USA c) Full automatic, electronic, computerized 2) Regeneration cycle: 0-99 days (adjustable) 3) Regeneration time: default set on 2:00am (adjustable) 4) Backwash duration: 1-80 minutes 5) Rinse duration: 12 minutes 6) Regeneration durations: 1-99 minutes 7) Min. / max. exchange capacity: a) 15,000 - 17,500 grains for Can-Soft-10C b) 30,000 - 35,000 grains for Can-Soft-20C 8) Min. / max. salt per regeneration: a) 0.5kg (1.1lbs)- 2kg (4.4lbs) for Can-Soft-10C b) 1kg (2.2lbs) - 4kg (9lbs) for Can-Soft-20C 9) Max service flow rate: a) 4.4gpm for Can-Soft-10C b) 8.8gpm for Can-Soft-20C 10) Inlet/outlet pipe size: 1" 11) Drain pipe size: 3/4" 12) Inflow water quality: hardness