Fleck Metered Softener Valves
The primary difference between the Fleck timer softener valves and the Fleck metered softener valves is the gallon counter. A timer valve counts days between regenerations, while a metered valve counts gallons of water used. With the more advanced digital valves they allow a meter setting with a timer override. For example, you can regenerate every 1500 gallons or 10 days, whichever comes first.