Honeywell 45900409-003 immersion sleeve

Honeywell aquastat well 45900409-003U (534.196.002) Original immersion well 1/2", 105 mm for mounting temperature sensors in heating and DHW systems Honeywell aquastat well (immersion pocket) 45900409-003U is an original protective mounting accessory designed for installing immersion thermostats (aquastats), temperature sensors and other sensitive elements of boiler automation systems. The product ensures sealed and safe placement of the sensor directly in the flow of heat transfer fluid (water), protecting it from mechanical damage, water hammer and corrosive effects of aggressive environment. Using the well is critical: it allows replacement or maintenance of the sensor without draining water from the entire heating system. If your system shows inertia of automation response (boiler turns on/off with delay) or unstable temperature readings, the cause may be corrosion or scale on the old well, impairing heat transfer. Installing an original well restores thermal contact and returns equipment accuracy. Technical specifications: Parameter Value Part numbers 45900409-003U, 534.196.002 Manufacturer Honeywell (USA/Europe) Device type Immersion well (pocket / Well) Mounting thread 1/2" (external) Immersion length 105 mm (from thread base) Purpose Installation of immersion sensors, thermostats, aquastats Application Boilers, water heaters, heating and DHW pipelines Contents Well only (sensor and thermal paste purchased separately) Material Brass Key advantages: Full compatibility with Honeywell: It is an original component for Honeywell aquastats, and also fits sensors of other manufacturers with immersion part diameter,