Recommended for automatic systems for residential water softening; valve body in plastic material Noryl, NSF listing; valves sealing rubber for use in cold water, material listing NSF; operating flow rate Kv = 3.4; backwash flow rate equal to 22,7 lpm with delta p 1.72 bar, range = 5 to resin capacity of 75 liters, available with the following series LOGIX timers (see data 01-03-02-IT): or 740 C - ET Electronic lap; or 760 C - ET Electronic volume; or 742 C programmable electronic chronometric; or 762 C