Williams P321942 Limit Switch 322027-701 we recommend retaining the original

we recommend retaining the original hardware or sourcing grade-appropriate fasteners for the final assembly

verify the dip switch settings on the top left of the module to match your system's temperature range

This non-regulated Robertshaw valve features a 1/2" NPT inlet and a 1/2" NPT outlet

The assembly includes a Style 4 sensing bulb (11/16" diameter by 3-1/4" length) and a 6-foot capillary for flexible positioning in demanding mechanical rooms

this specific assembly is rated for 120V operation only

Williams P321942 Limit Switch 322027-701 we recommend retaining the originalThe Williams P321942 Limit Switch is a critical OEM safety component engineered for Williams Forsaire Direct Vent Wall Furnaces and 6007 Series counterflow units. This temperature sensitive switch, classified as an L210 40F limit switch, monitors plenum air temperature to prevent heat exchanger damage and hazardous overheating conditions. As a technical HVAC replacement part, it is designed with a normally closed contact configuration that opens the