A breather valve is a pressure equalization valve for impermissible pressure and vacuum in a closed system.
A breather valve Breather Valve A breather valve is a pressure equalization valve for impermissible pressure and vacuum in a closed system. is installed in vent lines of storage tanks and equipment and enables the equalization of overpressure or underpressure.
The function depends on which connection socket of the valve is connected to the tank. When connected to a bleed line, the valve compensates for overpressure; when connected to a vent line, it compensates for underpressure.
