* The Watts Calcite Backwashing Filter System features a GE Autotrol 263 Control Valve and LOGIX 740 Timer Based Controls * Easy To Operate * Enpress Tank with Vortech Distributor Plate * Environmentally Friendly design, Reduces backwashing by up to 30% * Self Cleaning Nozzles * Permanent Dip Tube * Requires No Gravel Underbed * Highly Efficient Regeneration Reduces Salt Costs * Bypass Valve Included * Calcite Filter Media (Designed to Increase pH of Acidic Water)