The Fulton Boiler 2-20-000012 Water Probe for Decoupler is a replacement sensing component designed for compatible Fulton boiler systems. It monitors water conditions within the decoupler and provides signals to the control system to support proper equipment operation. By helping detect relevant water conditions, the probe assists with system monitoring and operational control. It is ... https://www.partshnc.com/fulton-boiler-2-20-000012-water-probe-for-decoupler