Owners of water softeners and filters that utilize any of the Autotrol valves can expect years of trouble free and reliable service. aQuatell offers a broad selection of softeners using either the Autotrol 255 or Autotrol 268 water softener valve. All of the aQuatell Autotrol softeners are metered systems meaning the softener regenerates based on water use. The Autotrol 255 valve is the residential 'workhorse' and is very well suited for average sized homes with typical water use patterns. The Autotrol 268 valve is well suited for higher flow rates and features a unique learning capability where the valve identifies water use patterns and regenerates accordingly for maximum water and salt savings.