Distributor (fire brigade)
The distributor is a water-bearing fitting for the water supply at the fire brigade . It is used to distribute the extinguishing agent from one supply line to several hose lines or, in special cases, to collect flows of extinguishing water from several lines. There are 3 types of distributors: The B-CBC distributor, the C-DCD distributor and the 2xB-CBC distributor, whereby the B-CBC distributor is used much more frequently.
The distributor consists of a housing with fixed couplings and a shut-off device for each outlet in the form of screw-down valves or ball valves. In addition, a BC adapter can be attached to the distributor with a chain on the B-CBC (not common in Austria). This makes it possible to distribute the extinguishing agent flow from a B hose line to 3 C or 2 C and 1 B hose lines.
A B-CBC distributor weighs up to 6.6 kg, more than twice as much as a C-DCD distributor. At a pressure of 16 bar in the direction of flow or 6 bar against the direction of flow (not advisable as the valve disks can tear off) the shut-off devices can still be moved easily and seal tightly. The housing itself must be able to withstand an internal pressure of 25 bar.
In order to ensure problem-free operation of the distributor, there is a sequence defined in Germany for connecting hose lines to the distributor (all information in the direction of the water flow):
- C-pipes : 1st pipe on the left, 2nd pipe on the right, 3rd pipe in the middle
- B-tubes : middle
- Special pipe (e.g. foam pipe , hydro shield ): middle
To make work easier, a water ring monitor can be built from the distributor by coupling the support elbow and a B-pipe . A C pressure hose is coupled and flooded between the two C outlets for stabilization. The movable lug part of the support elbow allows a certain alignment of the nozzle.
The 2-B distributor is an innovation from the new federal states and has been used there for several decades (even during the GDR era). The water supply is possible via two B-entrances, which are connected by a collecting piece. As with standard fittings, the water is released via CBC outlets. This form of the distributor enables z. B. Fire operations an uninterrupted water supply for the individual teams.
Switzerland
In Switzerland, the distributor is called "Teilstück", but its structure is analogous to the valve from Germany. The importance of this section in the Swiss fire service is less than in the German, as fires are also fought in internal attacks with rigid rapid attack lines.
The connection sequence differs from the German one in that the C-couplings are numbered from left to right, i.e. 1-2-3 instead of 1-3-2. In addition, the outgoing pipes are numbered based on the associated supply line. If the supply line has the number 10, the pipes 11, 12 and 13 go from the distributor (from left to right).
literature
- Lutz Rieck: Die Rote Hefte, booklet 06 - fire extinguishing fittings . Kohlhammer, Stuttgart 2000, ISBN 978-3-17-015171-0 , pp. 55-59 .
- Diverse: Hamilton - Handbook for the fire brigade . Boorberg Verlag, 21st edition 2012. ISBN 978-3-415-04560-6
- Diverse: The fire brigade textbook . Verlag W. Kohlhammer, 2nd edition 2012. ISBN 978-3-17-022518-3
