Optimized Airflow Sequencing: Designed to bring the blower fan on in coordination with the first heating stage to prevent limit switch tripping

Simplified Installation: Standard footprint and clear schematics allow for fast swaps during service calls

Designed for high-duty cycles in residential and light commercial furnaces

a critical factor for tight mechanical room footprints

This HVAC control valve offers a 200 psi close-off pressure and a 600 psi body pressure rating

Lochinvar & A.O. Smith 100233667 Gasket 328140-751 Optimized Airflow Sequencing: Designed toThe Lochinvar & A. O. Smith 100233667 Gasket is a critical OEM component specifically engineered for sight glass assemblies in high efficiency commercial boilers and water heaters. As a veteran technician knows, maintaining a gastight seal at the observation port is non negotiable for safe combustion monitoring. This replacement gasket is the direct successor to the obsolete GKT20057, designed to withstand the high thermal stresses found in Lochinvar