Lochinvar & A.O. Smith 100278104 Switch Els PW 17895 The Trane SWT3173 is the

The Trane SWT3173 is the manufacturer-designated replacement

protecting system integrity and optimizing steam pressure control

Engineered for high-temperature resilience

specific valve linkages (such as the AV-400 series) may be required depending on your specific valve body configuration

Lochinvar & A.O. Smith 100278104 Switch Els PW 17895 The Trane SWT3173 is theThe Lochinvar & A. O. Smith 100278104 Switch is a critical safety component designed for high performance hydronic and domestic hot water systems. This 100F manual reset limit switch acts as a primary thermal safeguard, effectively monitoring surface or water temperatures and interrupting the electrical circuit to the gas valve if the 100 degree Fahrenheit threshold is exceeded. Engineering for reliability, this manual reset high limit switch prevents