PV-valve
P/V Valve is a valve that provides automatic safety control of pressure differentials during cargo operations and during the voyage to avoid ship’s cargo tanks damage.
Whenever the cargo tank is over-pressurized above a pre-set level, the release valve opens, ensuring that venting is released at high velocity to avoid gas concentrations on the deck. In the event of low-pressure below a pre-set level, the vacuum valve opens and draws air into the tank through a flame trap. The Pressure/ Vacuum valve ensures that the cargo tank pressure remains within the pre-set operational pressure limits