The vent valve is used to vent air from an enclosed pipe or vessel and has been specifically designed for the Brewing, Soft Drinks, Dairy and Food industries.
There are two versions available:
"Air Escape" AE or AV, which allows the venting of air from an enclosed pipe or vessel but automatically closes when liquid fills the valve. A non-return stage is incorporated to prevent air re-entering through the valve.
"Air Pass" AP, which allows air to escape and re-enter. It is typically used for tank venting or siphon breaking.