Siamese Signs

Siamese Fire Department Connection (FDC) signs are a critical part of building fire safety. These signs clearly identify Siamese connections—the exterior pipe fittings where firefighters attach hoses to supply water to a building’s sprinkler or standpipe system. In an emergency, clearly marked Siamese FDC signs ensure that first responders can immediately locate and use the connection, saving valuable time and supporting effective fire suppression. Proper Siamese connection signage is required by FDNY, NFPA, and local building codes, making it essential for compliance, safety, and liability reduction.

A Siamese connection, also called a fire department connection (FDC), has two or more inlets that allow multiple fire hoses to be attached simultaneously. Signs typically read “Siamese Connection,” “Auto Sprinkler Siamese Connection,” “Standpipe Siamese Connection,” or “Combination Siamese Connection,” depending on the system it serves. Photoluminescent (glow-in-the-dark) and durable aluminum versions are often required to ensure visibility in low-light or smoke conditions. By posting Siamese fire department signs, building owners ensure quick firefighter access, reliable operation of fire protection systems, and compliance with all fire safety standards.