Introduction The SCANVENT high velocity p/v valve is the result of extensive research aimed at achieving the optimal balance between minimizing tank vapor loss and providing non-oscillating behavior.

Application Packaged in a straightforward design that caters to low maintenance needs, this valve incorporates a distinctive combination of magnet power and air brakes, which is both unique and patented. It stands out as a genuinely non-oscillating solution, aligning with the two-second, no-metal-to-metal contact definition outlined in ISO 15364:2021.

When maintenance is necessary, the entire inside trim can be lifted out in one lot, re-placed, and the crew can easily remove seats and discs for repair or replacement. There is no need to involve the factory or to use expensive service engineers.

Working principle During loading, the SCANVENT valve is a full-lifting valve with immediate high capacity upon reaching the opening setting, thanks to its magnet/weight/booster combination. The opening settings are adjustable for both pressure and vacuum units. During voyage, a small VOC dedicated valve handles the small thermal venting volumes necessary for the integrity of the tanks. This valve re-seats at its opening setting. Put differently, ullage space pressure, be it VOC or inert gas, is never lost below the VOC valve’s opening pressure. This will be the Target Pressure according to IMO MSC/Circ. 680. The VOC handling simply cannot be further improved.
The result of this simple but efficient design is optimum VOC handling and minimum use of the inert gas plant.

Benefits
• Simple rigid design
• Seat/disc easy to clean
• Plug & Play module system
• Large inside clearance
• Lowest possible leakage rate

Approvals
The SCANVENT high velocity p/v valve complies with all current regulations as well as those scheduled to come into force, including:
• IMO Circ. 677, Rev. 1
• ISO 15364:2021
• ISO 16852:2016

The valves are certified by all major classification societies and hold MED approval for use on vessels registered under EU flags.

Accessories
The valve comes with a wide range of accessories:
• Electric heat tracing
• Steam/thermal oil heat tracing
• Resilient seal for zero leakage and repairs
• PV Valve Heating Control Cabinet for valves with electrical heating