Fire Main Section Valve Sign

Fire Main Section Valve Sign – IMO A.654(16) Fire Control Symbol FS0223

This Fire Main Section Valve sign identifies a manual isolation valve on the vessel’s fire main, the ring-main piping that supplies pressurised seawater to hydrants and hose stations throughout the ship. The pictogram shows the standard bowtie-shaped valve symbol combined with the “H” and “T” hydrant and fire main markers used on IMO fire control plans, matching exactly what appears on the plan for this valve so crew can isolate the correct section of main without shutting down water supply to unaffected parts of the vessel. As SKU FS0223 in the Fire Fighting Signs range, it is built for permanent fixing at valve chests, pump room bulkheads and fire main manifolds throughout the ship.

A vessel’s fire main is typically sectioned so that damage or fire in one part of the ship does not cut off water supply to hydrants elsewhere, and that sectioning strategy only works if crew can correctly identify and operate the section valves involved. This sign gives an instant visual match between the physical valve and the corresponding symbol on the fire control plan, letting an engineer isolate a damaged section or confirm which hydrants remain supplied during an incident. The photoluminescent background also keeps the valve identifiable if lighting fails, which matters most during exactly the kind of emergency that might require fire main isolation in the first place.

Why Fire Main Section Valve Identification Matters

Firefighting effectiveness depends on maintaining water pressure to the hydrants actually needed during an incident, and an incorrectly operated section valve can inadvertently cut supply to the very hose stations the fire party is relying on. Clear, standardised valve signage lets any qualified crew member trace the fire control plan to the physical valve with confidence, which is especially important in pump rooms and valve chests where several section valves for different systems may be grouped together. This becomes critical during damage control situations where isolating a ruptured section of main quickly can preserve pressure to the rest of the system.

Compliance and Certification

This sign reproduces the fire control symbol set derived from IMO Resolution A.654(16) and continued under the current ISO 17631 standard for fire control plan graphics, matching what flag-state surveyors and classification societies expect to see at every fire main section valve. SOLAS Chapter II-2 requires the fire main and its isolating valves to be clearly identified as part of a vessel’s fire safety arrangements, and correctly labelled valves are a direct way to demonstrate that compliance during Port State Control inspections and class surveys. Fitting SKU FS0223 keeps your valve arrangement matched to the fire control plan surveyors will check against it.

Installation Recommendations

Mount this sign directly above or beside the physical section valve it identifies, using the pre-drilled fixing holes for a permanent bulkhead or pipe-mount fixing, or the self-adhesive backing on smooth painted steel. In pump rooms and exposed valve chests subject to moisture, vibration and saltwater exposure, a screw or rivet fixing will outlast adhesive over the vessel’s operating life, and the sign should remain clear of insulation, lagging or access covers that could obscure it. Check the sign during routine fire equipment rounds to confirm it remains legible and correctly corresponds to the section it labels.

• Standard IMO/ISO 17631 fire control symbol – bowtie valve pictogram with fire main markers
• Photoluminescent base for visibility during blackout or power failure
• 150x150mm rigid or self-adhesive format to suit steel, aluminium or GRP surfaces
• UV-stable, corrosion-resistant construction for pump room and exposed deck use
• Matches fire control plan symbols exactly for fast, confident valve identification

Order the FS0223 Fire Main Section Valve sign to keep every isolation point on your fire main correctly identified before your next drill or survey. Safety Sign Hub stocks the complete IMO fire control symbol range and ships marine-grade signage across Australia and to vessels in port.

Browse the full Fire Fighting Signs range for every fire control plan symbol your vessel needs, or see our Hazard Signs for ISO 7010 warning pictograms to complete your safety signage programme.