Durable Construction: Built with robust materials to resist common failure points like moisture corrosion and heat stress

this model provides superior precision and higher outlet pressures than standard spring-loaded alternatives

Common Questions Is this probe compatible with the S2020-LH models

Guarantees smooth and balanced rotation

Rugged Construction: Built to withstand high-ambient temperatures and continuous duty cycles in demanding environments

Lochinvar & A.O. Smith 100109933 Switch 323269-701 Durable Construction: Built with robustThe Lochinvar & A. O. Smith 100109933 Blocked Inlet Switch is a critical safety component designed for high efficiency water heaters and boilers. Engineered to monitor atmospheric pressure within the combustion air intake, this OEM replacement pressure switch ensures the burner operates within safe pneumatic parameters. This specific blocked inlet switch kit is calibrated to a set point of 0. 77" Water Column, effectively detecting restricted airflow