Anti Vacuum Valve SPP9700052

This anti-vacuum valve is designed to release air from the boiler as it heats, then automatically close once operating pressure is reached. By allowing air to escape during warm-up and preventing vacuum formation as the boiler cools, it helps protect the system from unwanted backflow and internal stress. Built from durable materials for reliable sealing, this valve supports stable pressure control and smooth operation of the steam system. Replacing a worn or malfunctioning valve helps ensure proper boiler behavior, reduces start-up issues, and supports consistent performance during everyday use.