Williams P321826 Limit Switch Heavy-duty construction designed for high-cycle

Heavy-duty construction designed for high-cycle reliability in demanding heating environments

hydronic heating

The White Rodgers 3F05-1 features a calibrated dial on the face of the disc

321542-401

Is this a sweat or flare connection

Williams P321826 Limit Switch Heavy-duty construction designed for high-cycleThe Williams P321826 Limit Switch is a critical safety component designed specifically for Monterey Counterflow Top Vent Furnaces, including the 250, 350, and 500 series. As a veteran technician knows, maintaining the integrity of the vent safety shutoff system is non negotiable for preventing flue gas spillage and potential carbon monoxide hazards. This replacement vent limit switch is engineered to monitor exhaust temperatures and will break the