The Aqua-Pure® CSM Series Water Softener includes a heavy-duty lead-free brass valve. Benefits include brighter clothing, cleaner dishes, less detergent consumption and less water usage. Helps protect the entire plumbing system. This system also saves water by metering use and regenerating only when necessary. The multi-level salt shelf traps dirt (sediment) and debris away from the brine draw area, enabling the use of inexpensive types of water treatment salt reducing maintenance.