The Trane WEL00848 Static Well Bulb Tap, measuring 1.0 inch in length, is an HVAC component designed to provide a mounting point for a temperature-sensing bulb within compatible heating and cooling systems. It helps position the sensing bulb for effective temperature measurement, supporting accurate system monitoring and control. Used in compatible Trane HVAC equipment, this component... https://www.partshnc.com/trane-wel00848-static-well-bulb-tap-1-0-length-x-0-50-od-x-0-281