Overpressure vent for container that stores liquid e.g. wine, has obturator for occupying closed and open positions, where mass of obturator is equal to product of safety pressure value and flow section divided by acceleration of gravity

摘要

The vent (24) has an obturator (32) for occupying a closed position in which the obturator prevents a gas flow toward an outer side of a container and an open position in which the obturator permits the gas flow to outside when pressure inside the container exceeds a certain value i.e. safety pressure value. A flow section is dimensioned. Mass of the obturator is equal to a product of the safety pressure value and the flow section divided by acceleration of gravity with a tolerance of plus or minus of 10 percentage. A seat cooperates with the obturator.