000 Ohm RTD over a 100 Ohm version for duct sensing

this specific model is the "Auto-Off" version without a hold feature

Automatic Reset Logic: Restores circuit continuity once the temperature drops to 120 degrees Fahrenheit

maintaining overheat safety protection without premature fatigue

to prevent nuisance tripping and ensure accurate negative pressure sensing

Watts 0386423 Valve Els PW 17895 000 Ohm RTD over aThe Watts 0386423 (Series B1156F) is a high capacity boiler feed water pressure regulator engineered for demanding hydronic heating applications. Built with a heavy duty bronze body and 1 2" FNPT threaded connections, this valve is designed to automatically fill the boiler and system piping while maintaining a constant system pressure. It provides essential make up water to compensate for system leaks, ensuring the loop remains pressurized and