Autotrol 256 By-Pass Valve Kit for the 155 & 255 Valve Bodies Part # 1040769

The Autotrol® brand by Pentair® is a trusted name in water treatment control valves, delivering reliable performance for residential, commercial, and industrial softening and filtration systems.

Autotrol valves are engineered for durability, ease of maintenance, and consistent operation, making them a preferred choice for water treatment professionals and system installers across North America and around the world. With precision-engineered mechanical and electronic designs, Autotrol control valves ensure efficient regeneration cycles, dependable service flow, and long service life.

About Autotrol® Water Treatment Valves

Pentair's Autotrol product line includes a broad range of industry-proven control valves such as Magnum and Magnum IT commercial/industrial valves, Performa series, and the 155, 255, 263/268, 273/278, 360/361, 363, and 368 Series valves, along with compatible controllers, accessories, meters, and related components. These solutions support softening, filtration, and specialty water conditioning applications in both residential and light commercial installations.

Autotrol control valves are known for their robust construction, versatile control options, and service-friendly designs that help minimize downtime and extend equipment life. Whether selecting a Magnum valve for higher flow commercial applications or a Performa/255-series valve for residential systems, Autotrol products provide dependable performance backed by Pentair's legacy of water treatment innovation.

If you are looking for a specific Autotrol® valve, controller, meter, accessory, or replacement component not listed on this page, please contact us by email or call our office (1-866-489-4004) for assistance. We supply genuine Pentair Autotrol products and can help you identify correct parts for existing water softener or filtration systems to ensure proper fit and reliable performance.

Browse our full selection of Pentair Autotrol control valves, repair kits, and accessories and get dependable water treatment components shipped FAST from our Canadian warehouse DIRECTLY to your door. A real Water Guy can help you select the right Autotrol solution for your residential or commercial water system.