velocity pressure vacuum valve prevents pressure and
vacuum to build-up during loading,
discharge, transport and
The High velocity pressure valves is also capable of
preventing the passage of flames in case of ignition or
outside the tank atmosphere.Separate pressure and vacuum
valves are elegantly integrated in a single
housing. If the
pressure in the tank falls below a pre-set level the vacuum
valve opens and air isdrawn into
the tank through a flame
trap. In the event of overpressure, the release valve opens.
At the same time an
additional valve at the top of the
housing ensures that venting is upwards at high velocity, to
concentrations of gas on deck.