As a genuine York HVAC part

This model is rated for a 300 PSI max working pressure

ensure you have these screws available for a secure fit

ensuring precise flame rectification and timing

this low pressure cutout switch is an essential component for fan proving

Functional Devices RIBU1SM-250 Switch 322838-752 As a genuine York HVACThe Functional Devices RIBU1SM 250 is a specialized enclosed pilot relay featuring a Carling rocker switch for manual override control. This SPDT relay is engineered for industrial and commercial HVACR applications where local ON AUTO OFF manual override is required for troubleshooting or maintenance. The unit is housed in a NEMA 1 rated enclosure, pre wired with 16 inch leads to streamline field installation into any standard 1 2 inch conduit