York S1-7990-3591 Limit Switch the JB U1-6B is a

the JB U1-6B is a standard HVARC component for creating reusable

having a reliable Watts 1101064 seal on hand is critical for maintaining HVAC manifold integrity and preventing pressure drops across the circuit

extending the service life of expensive electrical components

and plastic tubing

York S1-7990-3591 Limit Switch the JB U1-6B is aFor technicians servicing York, Coleman, or Luxaire equipment, the York S1 7990 3591 is a critical OEM furnace limit switch designed for precision thermal monitoring. This auto reset limit switch is engineered with a snap action contact system that opens at 180F and automatically closes at 150F, ensuring the HVAC blower motor and burners operate within safe operational parameters. As a genuine Source1 repair part, it offers exact physical and