Understanding the Autotrol 155 Water Softener Control Valve

The Autotrol 155 water softener control valve is a critical component in many residential and light commercial water softening systems. This mechanical control valve manages the entire water softening process, including service flow, backwash, brine draw, slow rinse, fast rinse, and brine tank refill cycles. Known for its reliability and straightforward mechanical operation, the Autotrol 155 has been a popular choice in water treatment systems for decades.

Key Features of Autotrol 155 Control Valve:

• Mechanical Timer Operation: Simple, reliable timer-driven control without complex electronics
• Durable Construction: High-quality materials designed for long-term performance
• Service-Friendly Design: Easy access to internal components for maintenance and repairs
• Multiple Port Configuration: Standard connections for inlet, outlet, drain, and brine lines
• Manual Override Capability: Allows for manual initiation of regeneration cycles when needed
• Compatible Design: Works with various tank sizes and resin quantities

Operation and Functionality:

The Autotrol 155 control valve operates using a mechanical timer that advances through the regeneration cycle stages automatically. The valve uses a piston and seal system to direct water flow through different paths during each cycle phase. During normal service operation, water flows through the resin bed where hardness minerals are removed. When regeneration is required, the valve sequentially directs water through backwash, brine draw, and rinse cycles to restore the resin's softening capacity.