Fire department system separator B-FW type EWE in accordance with DIN 14346, the reliable way to tap extinguishing water
Fire departments responding to a fire or carrying out exercises may contaminate drinking water. Such contamination can be caused by incorrect operation or a drop in power in the supply grid. Mixing foaming agents and highly dynamic pressure differences can result in unique hazards.
The Drinking Water Ordinance outlines penalties for negligence in handling water supply systems. When fire departments respond to fires, they must take technical precautions to avoid impacting the drinking water supply grid.
Fire department and extinguishing water regulations have been adapted to these requirements, meaning better solutions are required to separate extinguishing water and drinking water supply lines.
DIN 14346 Fire Department – Mobile System Separator B-FW
The Fire Department System Separator fulfils
DVGW worksheet W 405-B1 »Provision of extinguishing water through the public drinking water supply – Supplement 1: Avoiding impacts to drinking water and the pipe network when removing extinguishing water« (June 2016) and
DVGW worksheet W 400-3/W 408: »… devices and equipment downstream of the standpipe must be designed such that incorrect operation will not cause extinguishing water to be sucked back, pressed back, or to flow back into the drinking water grid.«
Accordingly, at least a BA system separator in accordance with DIN 14346 must be used on the standpipe or overground hydrants.
The B-FW type EWE fire department system separator to separate supply and extinguishing lines secures the standpipe or surface hydrant to prevent extinguishing water from being pressed, sucked, or flowing back into the drinking water grid in accordance with DVGW W 408 and W 405-B1.
The B-FW Type EWE fire department system separator → in product catalogue → in leaflet → on YouTube
The EWE-FLEXORIPP water meter pit is available in almost every variation!
We began selling our new “FLEXORIPP” water meter pit in early 2017
– at first offering only four variations each for Germany and Austria.
Today we offer a complete range for water meters 1" × 190 mm and 1¼" × 260 mm, in addition to 1" × 220 mm (Switzerland) and 1¼" × 175 mm (Austria).
The previous model, the EWE water meter pit, will be discontinued over the course of this year:
Information on the FLEXORIPP water meter pit is available here:
We have adjusted the names of our water meters according to the European Measuring Instruments Directive (MID).
The earlier designation Qn (nominal flow rate) is being replaced by Q₃ (continuous flow rate).
In addition, water meter dimensions, construction lengths, and thread sizes are also being indicated. An example:
The following table shows the continuous flow rate Q₃ for the respective Qn values.
Some EWE water meter systems are suitable for multiple sizes of water meters:
Deutsch | English | Polski |
---|---|---|
DIN | DIN | DIN |
DVGW | DVGW | DVGW |
Q3 | Q3 |
|
Qn | Qn | Qn |
PN | PN | PN |
DN | DN Nominal pipe size | |
Art. | Art. | Art. |
WZ | WM | WZ |
WZA | WMS | WZA |
WZS | WMP |
|
KMR | KMR | KMR |
KSR | CAC | KSR |
DM | PR |
|
RV |
| RV |
RD | PC |
|
PA | PA |
|
GG | GG |
|
EPP | EPP |
|
Si | Si | Si |
EPDM | EPDM | EPDM |
KTW |
| KTW |
CE | CE | CE |
EKB |
| EKB |