"> Pres-Vac PV Valve DN300 3500mbar
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Pres-Vac

PV Valve DN300 3500mbar

Pres-Vac PV Valve DN300 3500mbar is a shipboard unit in the PV Valves & Vent Systems group, classified in the source as Pressure/Vacuum Relief Valve (PV Valve). It is normally installed on cargo tank vent risers and vent headers on tanker decks. Its primary duty is to control cargo-tank pressure and vacuum and provide a safe discharge path for vapour while maintaining tank protection. In service it interfaces with cargo tank vent piping, mast risers, flame screens or arresting arrangements where fitted, pressure monitoring and inert-gas/cargo systems. Compared with neighboring entries in the same product family, this record is the exact Pres-Vac PV Valve DN300 3500mbar variant; the model designation should be retained unchanged when matching onboard documentation and spares. For exact limits, settings, test values and approved maintenance criteria, refer to the manufacturer documentation for the exact figure.

Pres-Vac PV Valve DN300 3500mbar

Components & Design

Component data being added…

Technical Data

nominal diameter dn 300
set pressure mbar 3500
vacuum mbar -350
material SS316

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Common failures & inspection points

Valve pallet or moving element sticking from cargo deposits, corrosion or icing, typically indicated by abnormal tank pressure, chatter or failure to relieve
Seat contamination or damage, typically indicated by continuous vapour leakage or inability to hold the intended pressure condition
Flame screen or vent passage fouling, typically indicated by restricted venting and abnormal tank pressure
Seal, spring or weight mechanism deterioration, typically indicated by incorrect opening behavior or failed bench test
Drainage blockage causing liquid accumulation, typically indicated by erratic operation, corrosion or restricted vent capacity

Service & Maintenance

Inspect cleanliness, free movement, seats, seals, drains, flame screens and vent piping; verify calibration/bench-test status under approved procedures and refer to manufacturer documentation for exact opening settings.

Suppliers & Spare Parts

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Replacement Parts

Carry approved seals, gaskets, seat components, springs or service kits where applicable, drain parts and replacement screens compatible with the fitted valve.
Equipment Model #103302 · ✓ still in production