Lochinvar & A.O. Smith 100108279 Valve 321894-706 ensuring exact fitment within the

ensuring exact fitment within the scroll housing for optimal HVAC airflow

a gauge with a lower range is recommended to prevent bottoming out the needle

Always inspect the small rubber hoses for moisture or debris before replacing the component

it is rated for hot water boilers provided the operating pressures do not exceed 25 psi for steam or 150 psi for water cycles

Common Questions Can the 620-406 replace a 120V primary transformer

Lochinvar & A.O. Smith 100108279 Valve 321894-706 ensuring exact fitment within theAs a direct replacement for 100108278, the Lochinvar & A. O. Smith 100108279 Valve is a critical safety component designed for commercial and residential water heating systems. This 3 4" temperature and pressure relief valve (T&P) is factory calibrated to discharge at a 150 PSI pressure setting or a 210F temperature threshold, preventing catastrophic tank failure. Engineered with a durable brass body and a thermo bonded coated sensing element, it