
Honeywell 45900409-007U aquastat sleeve
Honeywell aquastat well 45900409-007U Original protective well for immersion thermostats and sensors Honeywell aquastat well 45900409-007U is an original mounting accessory designed for installing immersion thermostats (aquastats), temperature sensors or ionization electrodes in heating systems, hot water supply and boiler equipment. The product ensures sealed placement of the sensing element inside a pipeline or tank with heat transfer fluid, protecting it from mechanical damage and aggressive effects of the working environment. If during boiler or water heater operation there is inaccuracy of temperature readings or inertia of automation response, this is often a consequence of corrosion or deposits on the old well, requiring replacement. Technical specifications: Parameter Value Part numbers 45900409-007U, 534.196.001 Manufacturer Honeywell (USA/Europe) Device type Protective well (Thermostat Well / Pocket) Purpose Installation of immersion sensors, aquastats Application Boilers, water heaters, heating and DHW pipelines Material Brass Application area: The well is designed for installation into standard threaded inlets on boiler bodies, heat exchangers or direct insertion into a pipeline. Recommended for use in hot water supply and heating systems in both residential and commercial facilities. Why replace the well? During operation, the metal well may become covered with scale or corrosion over time. This impairs heat transfer from the heat transfer fluid to the sensor element, leading to delays in automation response. Replacement with an original well restores measurement accuracy and correct operation of safety systems.