The Xylem-Hoffman Specialty 401446-62 Vacuum Breaker 3/4 Inch is a precision-engineered component designed for HVAC and hydronic heating systems. It prevents vacuum formation by allowing air to enter the system when pressure drops, protecting equipment from collapse or damage. Commonly used in boilers, condensate lines, and piping systems, this vacuum breaker ensures smooth fluid circ... https://www.partshnc.com/62-vacuum-breakr-34-for-xylem-hoffman-specialty-part-401446