While optimized as a 5/16 inch ball joint

allowing for immediate troubleshooting before hardware failure occurs

this auto-reset high limit switch monitors internal water temperatures to prevent catastrophic overheating in Lochinvar Copper-Fin II boilers and pool heaters

this is the direct functional replacement for legacy Barber Colman 2353-501 models

The Schneider Electric 2323-504 is a robust pneumatic differential pressure transmitter designed for precise measurement of static pressure or velocity pressure in HVAC air handling systems

Lennox 36K28 Limit Switch 320074-702 While optimized as a 5/16The Lennox 36K28 is a critical safety component designed for precise thermal regulation within residential and light commercial Lennox furnace systems. This automatic limit switch is engineered to monitor heat exchanger temperatures, effectively interrupting the burner circuit if internal conditions exceed the safety threshold. Operating with a fixed range of 160 190F, it provides a vital fail safe against overheating caused by restricted airflow or