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

this 1/2" NPT valve features a slow-closing design that effectively eliminates water hammer

For contractors performing AC capacitor replacement

Verify the specific cooling tonnage and heating capacity configuration to ensure total system compatibility and direct fit installation in the field

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

Lochinvar & A.O. Smith 100109933 Switch 323269-701 Rugged Construction: Built to withstandThe 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