Industrial Durability: Rugged construction designed to handle the continuous duty cycles of commercial heating applications

ensuring longevity in demanding hydronic applications

this valve body features the iconic one-handed removal mechanism

Key Benefits for Technicians: Precise Thermal Calibration: Fixed 155°F cutout with a 55°F differential ensures accurate cycle management and prevents nuisance tripping

and ME series units

Lochinvar & A.O. Smith 100208442 Relief Valve 30067439-890 Industrial Durability: Rugged construction designedThe Lochinvar & A. O. Smith 100208442 Relief Valve is a critical safety component designed for high performance boiler pressure management. Engineered to trigger at 50 PSI, this valve provides essential overpressure protection for both residential and commercial hydronic heating systems. Within the trade, the 100208442 is identical to RLV2001 and serves as a direct OEM replacement relief valve for several high capacity units, including the Lochinvar