Description
The Armstrong International A5628 1/2″ Vacuum Breaker is a pressure relief valve that prevents vacuum formation in steam and condensate systems by allowing air to enter when internal pressure drops below atmospheric levels. It operates using an internal membrane structure that opens under empty conditions and closes once pressure is equalized, maintaining proper flow and system balance. In HVAC systems it is used in steam traps, heat exchangers, and heating coils to prevent condensate backup and water hammer. It is secured at the top of steam trap components and supports equipment protection, stable drainage, and reliable system performance.
