and mixed gases

What does the green color code signify on these controls

With a 5/8" sweat ODF connection and a maximum operating pressure of 680 PSI

the 1320364 offers a direct-fit solution that maintains the internal safety string integrity without the calibration drift often found in generic aftermarket controls

This model is constructed from lead-free materials to comply with federal regulations for potable water systems

Lennox 66J78 Limit Switch Els PW 17895 and mixed gasesExperienced HVAC contractors recognize the Lennox 66J78 Limit Switch as a critical safety component for maintaining furnace integrity and preventing heat exchanger damage. This OEM Lennox replacement part is a 36T series disc style control designed for High Limit or Secondary Rollout applications. It features a Normally Closed (NC) circuit that opens on temperature rise to interrupt the heating cycle if internal temperatures exceed safe operating