Vacuum Breakers


Vacuum breakers prevent steam pressure from falling below atmospheric pressure. They allow air to enter the steam space, preventing a vacuum and controlling the temperature by mixing cooler air with the steam.

When a steam system shuts down, a vacuum can form as the remaining steam condenses. Vacuum breakers prevent this from happening and allow the force of gravity to drain the condensate.

Unless air needs to be retained in the steam space in order to control the temperature, all non-condensable gases should be removed to get maximum efficiency from the heat exchanger and to prevent water hammer and corrosion.