The blow-out proof stem and adjustable packing gland provide necessary safety and maintenance flexibility for technicians on the job site

allowing technicians to reuse existing hardware or customize the connection based on the specific thermostat tube assembly requirements

and TK-4 lines

If the HVAC blower runs constantly while the burners or heat strips won't engage

and 24V thermostat power requirements

Johnson Controls P100CP-2 Pressure Control The blow-out proof stem andThe Johnson Controls P100CP 2 is a high performance encapsulated pressure switch designed for heavy duty HVACR applications requiring precise high pressure monitoring. Built with a non adjustable SPST switch action, this control is factory calibrated for an open high configuration, featuring a 425 PSI cut out to prevent over pressurization and a 325 PSI cut in for automatic reset. Its rugged, dust tight construction makes it a reliable choice for