High Velocity PV valve for cargo oil tank is generally used in the relief system of the oil tanker and chemical tanker, according to the current regulations IMO and IBC. The purpose of the high velocity valve is to provide automatic control of pressure differentials during liquid cargo ship loading, voyage, ballasting and de-ballasting without any manual operation, also, it provides auto-protection against fire and explosions on deck. Additionally in the event that the inert gas system can not supply gas promptly, the vacuum valve can auto open to protect the tank against excessive vacuum when de-ballasting on dock. Normal, when the pressure risen in tank because of temperature or loading, the pressure valve open automatically and vent gas. When the pressure of tank come to pressure differentials, the vacuum valve or pressure valve all can be automatic resetted. If an ignition occurs outside the tank space, the flames will be quenched in the flame trap.
In accordance with the requirements of ISO15364, if the vessel navigates constantly in the poor ice conditions, it is very likely that the cystalliztion of the goods happens due to the vapor condensation.So that the PV valve should be required with the heating device. The heating achieved by steam supplied by the vessel.
The heating device is with simple structure, can be heated circularly with hot steam and thermal fluid less than 1.2Mpa.
Certificate: CCS, BV, ABS, RMRS
Material: Stainless Steel, Cast Steel