Lochinvar & A.O. Smith 100208448 Relief Valve 323269-701 While low-volume EP-8000 models require

While low-volume EP-8000 models require an external restrictor

High Filtration Efficiency: Removes scale

Plenum Rated: Suitable for installation in air-handling spaces

Key Benefits OEM Compatibility: Exact fit for 1 1/4" S4A series solenoid valves to ensure seamless integration

Direct Compatibility: Engineered specifically for the Sensus model 243 series regulators to ensure a perfect mechanical fit

Lochinvar & A.O. Smith 100208448 Relief Valve 323269-701 While low-volume EP-8000 models requireThe Lochinvar & A. O. Smith 100208448 Relief Valve is a critical boiler and water heater safety component designed for precise overpressure protection. This heavy duty 1 inch NPT inlet valve features a 1 1 4 inch outlet and is factory calibrated to a 50 PSI set pressure. Engineered for high recovery commercial and residential hydronic systems, it effectively prevents vessel failure by automatically discharging excess pressure when system limits are