For high-temperature or high-pressure steam applications

Use standard HVAC brazing practices with a nitrogen purge to prevent oxidation

and mixed gas systems

How do I verify if this replaces my existing G775RGA-2

Lochinvar & A.O. Smith 100108951 Thermostat 321894-706 For high-temperature or high-pressure steamThe Lochinvar & A. O. Smith 100108951 Thermostat is a critical OEM replacement part designed for high performance commercial and residential electric water heaters. As a heavy duty upper thermostat, it provides precise temperature control to ensure the heating elements cycle correctly and maintain system efficiency. This thermal regulator comes integrated with an Emergency Cut Off (ECO) safety switch, which manually trips to prevent overheating