Whether you are addressing a furnace pressure switch stuck open error or performing preventative maintenance

maintaining the original equipment's safety listing

Does the current switch require an external power supply

The fiberglass leads are designed for extreme dry heat

effectively cutting power to the heating elements or burners until the system cools to 145°F and automatically resets

McDonnell & Miller P-6-SS Probe Rod 30067439-890 Whether you are addressing aThe McDonnell & Miller 179555, model P 6 SS, is a 72 inch liquid level control probe engineered for high precision monitoring in industrial and commercial boiler systems. Constructed from premium 316 stainless steel, this probe rod is designed for high demand environments where corrosion resistance is non negotiable. The full length of the rod is encased in a high grade PTFE coating (Teflon), an essential technical feature that prevents "bridging" or