Nautical Term: PV valve
Definition of PV valve
A pressure vacuum relief valve, also known as a PV valve, is a vital component in ensuring the safe operation of liquid tanks. The PV valve automatically regulates the pressure or vacuum inside the tank, preventing the build-up of dangerous pressures or vacuums. For example, during the loading of a cargo tank with volatile liquids, the PV valve ensures that the pressure inside the tank does not exceed the safe limit, thereby preventing any potential danger to the cargo, the vessel, or the personnel involved in the loading operation.
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