Frequent question: What size and type of connections are found on a fire department connection?

The fire department connection will typically present two 2½-inch female hose outlets into which the fire department can connect supply hoselines. Some fire department connections will present a Storz connection to allow for the connection to be made with a large-diameter hoseline.

What size is a fire department connection?

For fire sprinkler systems, NFPA 13(99) 5-15.2. 2 requires a 4″ pipe size for fire engine connections. Exception #2 allows a single-outlet FDC where piped to a 3″ or smaller riser. These criteria indicate that unless the riser of the sprinkler system is 3″ or smaller, the FDC must have a minimum of two connections.

What size connections are on a fire hydrant?

A standard fire hydrant has two 2.5 inch- hose connection nozzles with 7.5 threads per inch, and one 4.5 inch-pumper connection nozzle with 4 threads per inch. The hose connection nozzle, compared to the pumper connection nozzle, has a lower discharge pressure and can be used directly to fight fires.

What is the height of fire department connection?

Fire department connections (FDC) shall be located not less than 18 inches and no more than 48 inches above the level of the adjoining ground (NFPA 14 Section 6.4. 6).

Which is the most common type of FDC connection?

One of the most common FDCs, known as a Siamese or two-way connection, has two 2 1/2-inch female swivel connections. NFPA requires that all fire department connections use 2 1/2″ National Hose (NH) threaded female couplings unless the authority having jurisdiction designates another specific connection type.

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How many 2 1/2 inch connections are required for each FDC?

You might, however, encounter a FDC with a single-outlet when the FDC’s piping goes into a 3-inch or smaller riser. For standpipe systems with no fire sprinkler system, NFPA 14 requires each FDC to have at least two 2½-inch internal threaded swivel fittings.

Is a FDC required?

A fire department connection (FDC) is required for most NFPA 13 and 13R automatic sprinkler systems and standpipe systems. They are not required for automatic sprinkler systems protecting one- and two-family dwellings and townhomes.

What is a standpipe system?

A standpipe system serves to transfer water from a water supply to hose connections at one or more locations within a building for firefighting purposes.

What is a PIV fire?

A postindicator valve (PIV) (photo 1) is commonly used as the valve operator for. automatic fire sprinkler and standpipe systems, where the system main valve is located. underground outside the building. PIVs may be located in paved or landscaped areas.

Which agency develops fire codes?

NFPA publishes more than 300 consensus codes and standards intended to minimize the possibility and effects of fire and other risks. NFPA codes and standards, administered by more than 250 Technical Committees comprising approximately 8,000 volunteers, are adopted and used throughout the world.

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