Honeywell Resideo GT162 is an OEM dial thermometer with 1/2" NPT thermowell for accurate 32°F to 250°F (0°C to 121°C) temperature monitoring in hydronic heating and plumbing systems. Built for hot water and glycol closed-loop systems, this rugged steel-case thermometer includes a clear 2-1/2" display and 1-1/2" stem for easy reading and reliable performance. The brass thermowell lets you remove or replace the thermometer without draining the line, reducing downtime and service labor. Its temperature range covers typical boiler supply and return temperatures, making it ideal for zones, manifolds, pumps, and heat exchangers in residential and light commercial systems. The 1/2" NPT rear connection simplifies installation on standard tees or tapping points, while the brass thermowell protects the sensing element from corrosion and turbulence for long-term accuracy and stable readings.
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