Williams P321826 Limit Switch Standard Fitting: Equipped with a

Standard Fitting: Equipped with a knurled 11/32-32 DL male nut for a tool-secure connection to the power unit

use a manometer to verify the vacuum is greater than

Its snap-action contact design provides a reliable electrical interface with the integrated furnace control

Look for a bulging top

and Airquest

Williams P321826 Limit Switch Standard Fitting: Equipped with aThe 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