Williams P323664 Safety Switch 320074-702 The device includes a DPDT

The device includes a DPDT relay for direct control of ventilation or safety equipment and an audible alarm for local notification

it features an adjustment screw under the regulator cap to accommodate specific manifold requirements between 2

essential for proper venting and pressure switch engagement in mid-to-high efficiency furnaces

verify the valve model on the data plate before attempting installation

Intelligent Maintenance: Integrated drift compensation prevents false triggers by accounting for dust accumulation over time

Williams P323664 Safety Switch 320074-702 The device includes a DPDTThe Williams P323664 Safety Switch is a critical OEM replacement part designed for high limit temperature monitoring in Williams enclosed front vented room heaters. This vent safety switch is engineered to break the electrical circuit and shut down the burner if flue temperatures reach the 250F threshold, preventing hazardous downdrafts or obstruction related overheating. Featuring a manual reset mechanism, this SPST furnace limit control ensures the