High Velocity Vent Valve · PV Valves & Vent Systems
The High Velocity Vent Valve is a class approved device fitted to cargo tank vent lines on tankers to protect tanks from over-pressure and vacuum. It releases vapour upward at high velocity, keeping the discharge clear of deck level during loading and ballasting. It forms part of the inert gas and tank venting arrangement required under SOLAS for tankers, with flame screens fitted to prevent flame passage.
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What our service work and the manufacturer documentation say about keeping this model running.
Test P/V settings semi-annually; clean flame screens monthly.
Carry spare flame screens, O-ring seals and gaskets, and the setting and test items needed for the semi-annual pressure and vacuum checks. Keep a spare valve cover or internals where the valve is critical to tank safety.
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