Fire Department Connections

Sprinkler systems may require additional water pressure during a fire. Fire department connections, also called Siamese connections, are located on the outside wall of the building or near the street. Such a connection allows the fire department to connect its pumper directly into the building’s sprinkler system to increase water pressure and add water to the system. In a larger fire with many sprinklers operating, that would help maintain higher pressure to the activated sprinklers.

Fire department connection with caps in place
Fire department connection without caps and a bottle in a hose connection

The fire department connections must be:

  • easily located and accessible for use by the fire department
  • clear of debris
  • properly connected to the sprinkler system
  • maintained in working order at all times