A pressure or vacuum relief valve is installed in vent lines of vessels and equipment and enables the equalization of overpressure or underpressure.
The Pressure/vacuum relief valve Pressure/vacuum relief valve is an umbrella term that includes pressure or vacuum relief valve as well as pressure and vacuum relief valve. function depends on which connection socket Connection socket A connection socket is the component which is used to connect the equipment to other components or lines. of the valve is connected to the tank. When connected to a bleed line, the valve compensates for overpressure Overpressure Overpressure refers to an increase in pressure in a system or vessel above the normal operating pressure. ; when connected to a vent line, it compensates for underpressure.
