LFA72W-10P/10R Vacuum Relief Safety Valve  

The LFA72W is suitable for vacuum systems with temperatures ≤200°C. When the vacuum inside the container exceeds the allowable limit, the valve automatically opens to draw in air. Once the vacuum inside the container reaches the allowable limit, the valve automatically closes, thereby protecting the equipment and system. Installed in normal non-vacuum systems, this valve automatically opens when the container and system's vent valves are not open and a vacuum is created.