A breeching inlet is a fire brigade connection on the outside wall of a building. Fire trucks connect their hoses to it and pump water into the building's dry riser, wet riser, sprinkler system or fire water tank. In NFPA standards it is called a fire department connection (FDC).
On site, the breeching inlet is a small box on the wall, and it is easy to forget. But on a handover inspection it is one of the first things the Civil Defence officer walks to. A missing cap, an inlet hidden behind landscaping or a sign with no Arabic text can hold up the whole inspection.
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What is a breeching inlet?
A breeching inlet is the point where the fire brigade adds water to a building's fire fighting system. It is a second water supply: if the building's tank or pumps fail, the trucks can still push water into the risers.
- Breeching inlet: the British and UAE site term. In British practice, inlet breechings for dry risers have their own standard, BS 5041-3.
- Fire department connection (FDC): the NFPA term, used in NFPA 13 and NFPA 14.
- Siamese connection: the older American name for a two-inlet FDC.
A two-way breeching inlet has two hose inlets, and a four-way has four. More inlets let more hoses feed the system at once.
How a breeching inlet works
- The truck takes water from a hydrant or its own tank, and the crew connects hoses to the inlets.
- The truck pump pushes water through the inlet and a check valve into the system.
- Water goes up the dry riser, wet riser or sprinkler riser to the fire floors. A separate inlet can refill the fire water tank.
- The check valve stops system water from flowing back out through the inlet.
Breeching inlet requirements
These points come up in every design review and inspection. Check the edition your project uses: NFPA 14, NFPA 13, and in the UAE the UAE Fire and Life Safety Code.
| Requirement | What it means on site |
|---|---|
| Listed check valve | One in each connection, as close to the inlet as possible, in a place you can reach for maintenance. |
| No shutoff valve | Nothing in the inlet piping that can be closed and block the fire brigade. |
| Not on pump suction | The inlet feeds the system side, never the suction side of the fire pump. |
| Height | NFPA 14 (2019) sets 18 to 48 in (about 450 to 1,200 mm) above the ground next to it. |
| Pressure rating | Listed for a working pressure equal to or higher than the system pressure. |
| Caps or plugs | Fitted on every inlet to keep dirt out, and easy for fire crews to remove. |
| Sign | States the system it serves, for example "Dry Riser" or "Sprinkler System". In the UAE, in English and Arabic. |
| Tank refill inlet (UAE) | A separate inlet to the fire water tank, close to the fire truck parking, so Civil Defence can refill the tank. |
| Number of inlets | At least one per system. High-rise buildings and large sites often need more, per zone. Check the code for your building. |
| Testing | The pipe between the inlet and the check valve is pressure tested like the rest of the system. |
Common site mistakes
- Inlet far from the fire truck access. Agree the location with the fire authority early, not at handover.
- Blocked by landscaping, parking or a fence.
- Missing caps. Sand gets in and hoses will not connect quickly.
- Wrong or missing sign. A cabinet that just says "Breeching Inlet" does not tell the crew which system it feeds.
- A gate valve added "for maintenance". If it can be closed, it can be left closed.
Breeching inlet inspection checklist
- Visible from the fire truck access and nothing in front of it.
- Cabinet door opens freely; glass and lock in good condition.
- All caps or plugs in place; threads and couplings not damaged.
- Sign present, readable and naming the right system (English and Arabic in the UAE).
- Check valve in place and accessible; no shutoff valve in the inlet line.
- Test records for the inlet piping in the handover file.
Related reading on the water side of the system: the anti-vortex plate in fire pump suction tanks, and, if you work in the UAE, Civil Defence fire company categories.
On your next inspection, find the breeching inlet first and run the checklist above. Then try the free CFPS Exam Simulator.
Start the free fire alarm course →Breeching inlet FAQ
Is a breeching inlet the same as a fire department connection?
What is the difference between a 2-way and a 4-way breeching inlet?
Why is a check valve needed but a shutoff valve not allowed?
Sources: NFPA 14, Standard for the Installation of Standpipe and Hose Systems (2019 edition for the height range, as cited in San Francisco Fire Department bulletin 4.06); BS 5041-3, inlet breechings for dry riser inlets. UAE points are from site practice and the video; check the current UAE Fire and Life Safety Code for your project. Checked 5 Nov 2026. By Mohammad Alhamad, CFPS.
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