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Your partner for drinking water protection

 

Fire department system separator B-FW type EWE in accordance with DIN 14346, the reliable way to tap extinguishing water

 

 

The Problem

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.

The regulations

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 solution

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.

  • Protect the drinking water grid against contamination
  • Lower pressure drop, higher flow rate
  • Avoid damage to the pipeline network caused by major dynamic pressure changes
  • Function is easy to check
  • Lightweight fitting (3 kg)
  • Simple maintenance

The B-FW Type EWE fire department system separator  →  in product catalogue→ in leaflet→ on YouTube

EWE-FLEXORIPP

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:

  • The EWE water meter pit 1" × 220 mm in designs with KMR or pressure reducer is no longer available.

 

 

Information on the FLEXORIPP water meter pit is available here:

An error in our pricing list

Our printed pricing list shows incorrect order numbers and prices on the bottom of page P 1.66.

→ Download correction sheet

Multi-drill valve KIT for PE pipe, FRIALEN welding system, outlet d 40 mm

The information in our pricing list download and the web catalogue has been corrected.

Change in the elastomer guidelines
Separation of our previous combined fittings for water and gas

Only for gas installation!

  • Combination NBR gaskets for gas and water can no longer be certified for use with drinking water based on the current version of the elastomer guidelines from the Federal Environmental Office.
  • Because of this, NBR gaskets will now only be used in our gas fittings.
  • Chrome-plated fittings will be discontinued.
  • Please note the new item numbers for gas fittings.
  • All gaskets used in our drinking water fittings are made of EPDM; these may be used exclusively for drinking water installation, since they are not gas resistant.
  • Fittings, components, and exterior packaging are labelled accordingly.

Only for drinking water installation!

  • All gaskets used in our drinking water fittings are made of EPDM; these may be used exclusively for drinking water installation, since they are not gas resistant.
  • Combination NBR gaskets for gas and water can no longer be certified for use with drinking water based on the current version of the elastomer guidelines from the Federal Environmental Office. Because of this, NBR gaskets will now only be used in our gas fittings.
  • Fittings, components, and exterior packaging are labelled accordingly.

Label on our tapping fittings for gas

Label on our tapping fittings for water

Q₃ replaces Qn

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:

Abbreviations

Deutsch

English

Polski

DIN
Deutsches Institut für Normung

DIN
German Institute for Standardization

DIN
Niemiecki Instytut Norm

DVGW
Deutscher Verein des Gas- und Wasserfaches

DVGW
German Technical and Scientific Association for Gas and Water

DVGW
niemieckie stowarzyszenie branży gazu i wody

Q3
Dauerdurchfluss

Q3
Permanent flow

 

Qn
Nenngröße Wasserzähler

Qn
Nominal flow

Qn
wielkość znamionowa

PN
Nenndruck

PN
Nominal Pressure

PN
ciśnienie znamionowe

DN
Nennweite (innerer Durchmesser)

DN
Nominal pipe size


Art.
Artikelnummer

Art.
Article number

Art.
numer artykułu

WZ
Wasserzähler

WM
Water meter

WZ
licznik wody

WZA
Wasserzähler-Anlage

WMS
Water meter system

WZA
instalacja licznika wody

WZS
Wasserzähler-Schacht

WMP
Water meter pit

 

KMR
Kegelmembran-Rückflussverhinderer

KMR
Ball membrane non-return flow valve

KMR
ogranicznik przepływu z membraną stożkową

KSR
Kombiniertes Schrägsitz-Rückschlagventil

CAC
Combined angle seat check valve

KSR
łączony zawór zwrotny z gniazdem ukośnym

DM
Druckminderer

PR
Pressure regulator

 

RV
Rückflussverhinderer


Non-return flow valve

RV
ogranicznik przepływu

RD
Rohrdeckung

PC
Pipe cover

 

PA
Polyamid

PA
Polyamide

 

GG
Gusseisen mit Lamellengraphit

GG
Lamellar graphite cast iron

 

EPP
Expandiertes Polypropylen

EPP
Expanded polypropylene

 

Si
Silicium

Si
Silicon

Si
krzem

EPDM
Ethylen-Propylen-Dien-(Monomer)-Kautschuk

EPDM
ethylene propylene diene monomer (M-class) rubber

EPDM
kauczuk z etylo-propylenowo-dienowego-monomeru

KTW
Kunststoffe im Trinkwasser

 

KTW
tworzywa sztuczne w wodzie pitnej

CE
Zentelen, Centelen

CE
Centelen

CE
Zentelen, Centelen

EKB
Epoxid-Kunststoff-Beschichtung

 

EKB
powłoka epoksydowa z tworzywa sztucznego