Portable equipment for projecting extinguishing agents supplied by firefighting pumps - Collecting heads and dividing breechings PN16

1.1   This document defines requirements and tests which apply to:
-   collecting heads with a nominal pressure of 16 bar (1,6 MPa) PN16 which are used by fire and rescue services to combine two or more inlets into one or more outlets;
-   dividing breechings with a nominal pressure of 16 bar (1,6 MPa) PN 16 which are used by fire and rescue services to divide one or more inlets into two or more outlets.
NOTE 1   In this document "ColDiv" is used to refer both to collecting heads and dividing breechings.
NOTE 2   In this document, drawings of collecting heads and dividing breechings are shown inlets downwards and outlet upwards.
1.2   This document is not applicable to collecting heads or dividing breechings which have been manufactured before its date of publication as a European Standard.

Tragbare Geräte zum Ausbringen von Löschmitteln, die mit Feuerlöschpumpen gefördert werden - Sammelstücke und Verteiler PN 16

1.1   Dieses Dokument legt Anforderungen und Prüfungen fest für:
-   Sammelstücke PN 16 mit einem Nenndruck von 16 bar (1,6 MPa), die von Feuerwehr und Rettungsdiensten verwendet werden, um zwei oder mehr Zuleitungen mit einem oder mehr Abgängen zu verbinden;
-   Verteiler PN 16 mit einem Nenndruck von 16 bar (1,6 MPa), die von Feuerwehr und Rettungsdiensten verwendet werden, um eine oder mehr Zuleitungen auf zwei oder mehr Abgänge zu verteilen.
ANMERKUNG 1   In diesem Dokument wird "ColDiv" sowohl für Sammelstücke als auch für Verteiler verwendet.
ANMERKUNG 2   In diesem Dokument sind bei Zeichnungen von Sammelstücken und Verteilern die Eingänge nach unten und die Abgänge nach oben dargestellt.
1.2   Dieses Dokument gilt nicht für Sammelstücke oder Verteiler, die vor dem Datum der Veröffentlichung als Europäische Norm hergestellt wurden.

Équipement portable de projection d'agents d'extinction alimenté par des pompes à usage incendie - Collecteurs et divisions PN16

1.1   Le présent document définit les prescriptions et essais qui s'appliquent aux :
-   collecteurs d'une pression nominale de 16 bar (1,6 MPa) PN16, utilisés par les services d'incendie et de secours pour combiner deux entrées, ou plus, en une ou plusieurs sorties ;
-   divisions d'une pression nominale de 16 bar (1,6 MPa) PN16, utilisées par les services d'incendie et de secours pour diviser une ou plusieurs entrées en deux sorties, ou plus.
NOTE 1   Dans le présent document, le terme « ColDiv » est utilisé pour désigner à la fois les collecteurs et les divisions.
NOTE 2   Dans le présent document, les dessins des collecteurs et des divisions sont représentés avec les entrées vers le bas et les sorties vers le haut.
1.2   Le présent document ne s'applique pas aux collecteurs ou divisions fabriqués avant la date de sa publication sous forme de Norme européenne.

Prenosna oprema za črpanje in uporabo gasilnega sredstva iz gasilskih črpalk - Zbiralne in razdelilne zapore PN16

General Information

Status
Published
Public Enquiry End Date
04-Sep-2019
Publication Date
04-Oct-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
24-Sep-2020
Due Date
29-Nov-2020
Completion Date
05-Oct-2020

Buy Standard

Standard
EN 17407:2020
English language
25 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day
Draft
prEN 17407:2019
English language
25 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 17407:2020
01-november-2020
Prenosna oprema za črpanje in uporabo gasilnega sredstva iz gasilskih črpalk -
Zbiralne in razdelilne zapore PN16
Portable equipment for projecting extinguishing agents supplied by firefighting pumps -
Collecting heads and dividing breechings PN16
Tragbare Geräte zum Ausbringen von Löschmitteln, die mit Feuerlöschpumpen gefördert
werden - Sammelstücke und Verteiler PN 16
Équipement portable de projection d'agents d'extinction alimenté par des pompes à
usage incendie - Collecteurs et divisions PN16
Ta slovenski standard je istoveten z: EN 17407:2020
ICS:
13.220.10 Gašenje požara Fire-fighting
SIST EN 17407:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 17407:2020

---------------------- Page: 2 ----------------------
SIST EN 17407:2020


EN 17407
EUROPEAN STANDARD

NORME EUROPÉENNE

September 2020
EUROPÄISCHE NORM
ICS 13.220.10
English Version

Portable equipment for projecting extinguishing agents
supplied by firefighting pumps - Collecting heads and
dividing breechings PN 16
Équipement portable de projection d'agents Tragbare Geräte zum Ausbringen von Löschmitteln, die
d'extinction alimenté par des pompes à usage incendie mit Feuerlöschpumpen gefördert werden -
- Collecteurs et divisions PN 16 Sammelstücke und Verteiler PN 16
This European Standard was approved by CEN on 10 August 2020.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17407:2020 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
SIST EN 17407:2020
EN 17407:2020 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Description . 6
4.1 Collecting head . 6
4.2 Dividing breeching . 7
4.3 Combined collecting head and dividing breeching . 7
5 Mechanical characteristics . 8
5.1 ColDiv types and classification . 8
5.2 Operating and handling elements . 12
6 Designation. 12
7 Material . 13
8 Requirements and verification . 13
8.1 General . 13
8.2 Pressure and flow test . 13
8.3 Components, dimensions and mass . 14
8.4 Sensitivity to heat and frost . 16
8.4.1 Sensitivity to heat . 16
8.4.2 Sensitivity to frost . 16
8.5 Pressures and leak-tightness . 17
8.6 Pressure loss . 18
9 Information for use . 19
9.1 Instruction and maintenance handbook . 19
9.1.1 General . 19
9.1.2 Instruction handbook . 19
9.1.3 Maintenance handbook. 20
9.2 Marking . 20
Annex A (informative) Acceptance test on delivery . 21
Annex B (normative) Datasheet for collecting heads and dividing breechings . 22
Annex C (informative) Example of completed datasheet for a collecting head . 23
Annex D (informative) Example of completed datasheet for a dividing breeching . 24
Bibliography . 25

2

---------------------- Page: 4 ----------------------
SIST EN 17407:2020
EN 17407:2020 (E)
European foreword
This document (EN 17407:2020) has been prepared by Technical Committee CEN/TC 192 “Fire and
rescue service equipment”, the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2021, and conflicting national standards shall
be withdrawn at the latest by March 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
3

---------------------- Page: 5 ----------------------
SIST EN 17407:2020
EN 17407:2020 (E)
Introduction
The collecting head PN 16 is primarily intended for use during firefighting operations to connect one or
more lines of hose.
The dividing breeching PN 16 with outlet valves is primarily intended for use during firefighting
operations to divide one or more inlets into two or more outlets and fight the fire with more than one
branchpipe.

4

---------------------- Page: 6 ----------------------
SIST EN 17407:2020
EN 17407:2020 (E)
1 Scope
1.1 This document defines requirements and tests which apply to:
— collecting heads with a nominal pressure of 16 bar (1,6 MPa) PN 16 which are used by fire and
rescue services to combine two or more inlets into one or more outlets;
— dividing breechings with a nominal pressure of 16 bar (1,6 MPa) PN 16 which are used by fire and
rescue services to divide one or more inlets into two or more outlets.
NOTE 1 In this document “ColDiv” is used to refer both to collecting heads and dividing breechings.
NOTE 2 In this document, drawings of collecting heads and dividing breechings are shown inlets downwards
and outlet upwards.
1.2 This document is not applicable to collecting heads or dividing breechings which have been
manufactured before its date of publication as European standard.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 837-1, Pressure gauges — Part 1: Bourdon tube pressure gauges — Dimensions, metrology,
requirements and testing
EN 837-3, Pressure gauges — Part 3: Diaphragm and capsule pressure gauges — Dimensions, metrology,
requirements and testing
EN 12266-1, Industrial valves — Testing of metallic valves — Part 1: Pressure tests, test procedures and
acceptance criteria — Mandatory requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
collecting head
collecting breeching
device used to connect two or more inlets to one outlet
3.2
dividing breeching
device used to divide one inlet into two or more outlets equipped or not with shut off valves
3.3
combined collecting head and dividing breeching
device used to connect two or more inlets to two or more outlets equipped or not with shut off valves
5

---------------------- Page: 7 ----------------------
SIST EN 17407:2020
EN 17407:2020 (E)
3.4
pressures

Note 1 to entry: Pressures are expressed in bar, measured with respect to atmospheric pressure.
5
Note 2 to entry: 1 bar = 0,1 MPa (10 Pa).
3.4.1
outlet working pressure
p
2
pressure measured at the outlet of the dividing breeching
3.4.2
inlet working pressure
p
1
pressure measured at the inlet of the dividing breeching
3.4.3
nominal pressure
p
N
maximum working pressure measured at the inlet of the ColDiv
3.4.4
test pressure
p
t
static pressure used for leakage tests
3.4.5
burst pressure
p
B
static pressure used for burst test
3.4.6
dividing breeching pressure loss
pressure difference between the inlet of the dividing breeching and the outlet of the dividing breeching
4 Description
4.1 Collecting head
A collecting head comprises at least the following components (see Figure 1):
— a body with several inlets and one outlet;
— fitting system;
— gripping device, optional;
— pressure gauge, optional;
— clapper/non return valve(s) when more than one inlet.
NOTE These components can consist of a single piece or several parts.
6

---------------------- Page: 8 ----------------------
SIST EN 17407:2020
EN 17407:2020 (E)

Key
1 body
Figure 1 — Components of a collecting head shown without fitting systems
4.2 Dividing breeching
A dividing breeching comprises at least the following components (see Figure 2):
— a body with one inlet and several outlets, with or without shut off device (e.g. operated by a valve
handle, a lever);
— fitting system;
— gripping device, optional;
— pressure gauge, optional.
NOTE These components can consist of a single piece or several parts.
4.3 Combined collecting head and dividing breeching
A combined collecting head and dividing breeching is composed of elements described in 4.1 and 4.2
and illustrated in Figure 2.
7

---------------------- Page: 9 ----------------------
SIST EN 17407:2020
EN 17407:2020 (E)

Key
1 body
2 gripping device
3 pressure gauge
4 clapper/non return valve
Figure 2 — Components of a combined collecting head and dividing breeching shown without
fitting systems
5 Mechanical characteristics
5.1 ColDiv types and classification
The ColDiv are classified by letters depending on nominal sizes of inlets and outlets as specified in
Table 1 and given in a clockwise manner starting from the left inlet.
Table 1 — Nominal size designation
Nominal Nominal
bore bore Hose size Denominating
metric imperial (ranges) code
size size
mm inch mm
25 1 19 to 25,4 D
50 1,5 2 38 to 55 C
75 2,5 3 65 to 75 B
110 4 4,5 100 to 110 A
125 5 125 E
150 6 150 F

Possible combination inlets/outlets are specified in Table 2 (see examples 1 to 5).
8

---------------------- Page: 10 ----------------------
SIST EN 17407:2020
EN 17407:2020 (E)
EXAMPLE 1 A dividing breeching with 1 inlet (75 mm) and 3 outlets (52 mm – 75 mm – 52 mm) is classified as
follows: B-CBC (see Figure 3).

Figure 3 — Example of a dividing breeching type B-CBC with couplings
EX
...

SLOVENSKI STANDARD
oSIST prEN 17407:2019
01-september-2019
Prenosna oprema za črpanje in uporabo gasilnega sredstva iz gasilskih črpalk -
Zbiralne in razdelilne zapore PN16
Portable equipment for projecting extinguishing agents supplied by firefighting pumps -
Collecting heads and dividing breechings PN16
Tragbare Geräte zum Ausbringen von Löschmitteln, die mit Feuerlöschpumpen gefördert
werden - Sammelstücke und Verteiler PN 16
Équipement portable de projection d'agents d'extinction alimenté par des pompes à
usage incendie - Collecteurs et divisions PN16
Ta slovenski standard je istoveten z: prEN 17407
ICS:
13.220.10 Gašenje požara Fire-fighting
oSIST prEN 17407:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 17407:2019

---------------------- Page: 2 ----------------------
oSIST prEN 17407:2019


DRAFT
EUROPEAN STANDARD
prEN 17407
NORME EUROPÉENNE

EUROPÄISCHE NORM

June 2019
ICS 13.220.10
English Version

Portable equipment for projecting extinguishing agents
supplied by firefighting pumps - Collecting heads and
dividing breechings PN16
Équipement portable de projection d'agents Tragbare Geräte zum Ausbringen von Löschmitteln, die
d'extinction alimenté par des pompes à usage incendie mit Feuerlöschpumpen gefördert werden -
- Collecteurs et divisions PN16 Sammelstücke und Verteiler PN 16
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 192.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, North
Macedonia, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17407:2019 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
oSIST prEN 17407:2019
prEN 17407:2019 (E)
Contents Page
Foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Description . 7
4.1 Collecting head . 7
4.2 Dividing breeching . 7
4.3 Combined collecting head and dividing breeching . 8
5 Mechanical characteristics . 8
5.1 ColDiv types and classification . 8
5.2 Operating and handling elements . 11
6 Designation. 12
7 Material . 12
8 Requirements and verification . 12
8.1 General . 12
8.2 Pressure and flow test . 13
8.3 Components, dimensions and mass . 14
8.4 Sensitivity to heat and frost . 16
8.5 Pressures and leak-tightness . 17
8.6 Pressure loss . 19
9 Information for use . 19
9.1 Instruction and maintenance handbook . 19
9.2 Marking . 20
Annex A (informative) Acceptance test on delivery . 21
Annex B (normative) Datasheet for collecting heads and dividing breechings . 22
Annex C (informative) Example of completed datasheet for a collecting head . 23
Annex D (informative) Example of completed datasheet for a dividing breeching . 24
Bibliography . 25

2

---------------------- Page: 4 ----------------------
oSIST prEN 17407:2019
prEN 17407:2019 (E)
European foreword
This document (prEN 17407:2019) has been prepared by Technical Committee CEN/TC 192 “Fire and
rescue service equipment”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
3

---------------------- Page: 5 ----------------------
oSIST prEN 17407:2019
prEN 17407:2019 (E)
Introduction
The collecting head PN16 is primarily intended for use during firefighting operations to connect one or
more lines of hose.
The dividing breeching PN16 with outlet valves is primarily intended for use during firefighting
operations to divide one or more inlets into two or more outlets and fight the fire with more than one
branchpipe.
4

---------------------- Page: 6 ----------------------
oSIST prEN 17407:2019
prEN 17407:2019 (E)
1 Scope
1.1 This document defines requirements and tests which apply to:
— collecting heads with a nominal pressure of 16 bar (1,6 MPa) PN16 which are used by fire and rescue
services to combine two or more inlets into one or more outlets;
— dividing breechings with a nominal pressure of 16 bar (1,6 MPa) PN 16 which are used by fire and
rescue services to divide one or more inlets into two or more outlets.
NOTE 1 In this document, "ColDiv" is used to refer both to collecting heads and dividing breechings.
NOTE 2 In this document, drawings of collecting heads and dividing breechings are shown inlets downwards and
outlet upwards.
1.2 This document is not applicable to collecting heads or dividing breechings which have been
manufactured before its date of publication as a European Standard.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 659, Protective gloves for firefighters
EN 837-1, Pressure gauges — Part 1: Bourdon tube pressure gauges — Dimensions, metrology,
requirements and testing
EN 837-3, Pressure gauges — Part 3: Diaphragm and capsule pressure gauges — Dimensions, metrology,
requirements and testing
EN 12266-1, Industrial valves — Testing of metallic valves — Part 1: Pressure tests, test procedures and
acceptance criteria — Mandatory requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
collecting head
collecting breeching
device used to connect one or more lines of hose
Note 1 to entry: e.g. to the suction inlet of a pump or another (larger diameter) hose.
5

---------------------- Page: 7 ----------------------
oSIST prEN 17407:2019
prEN 17407:2019 (E)
3.2
dividing breeching
device used to divide one or more inlets clapper valved or not, into two or more outlets equipped or not
with shut off valves
3.3
combined collecting head and dividing breeching
device used to connect one or more lines of hose into two or more outlets equipped or not with shut off
valves
3.4
pressures
Note 1 to entry: Pressures are expressed in bar, measured with respect to atmospheric pressure.
5
Note 2 to entry: 1 bar = 0,1 MPa (10 Pa).
3.4.1
outlet working pressure
p
2
pressure measured at the outlet of the dividing breeching
3.4.2
inlet working pressure
p
1
pressure measured at the inlet of the dividing breeching
3.4.3
nominal pressure
p
N
maximum working pressure measured at the inlet of the ColDiv
3.4.4
test pressure
p
t
static pressure used for leakage tests
3.4.5
burst pressure
p
B
static pressure used for burst test
3.4.6
dividing breeching pressure loss
Δp
pressure difference between the inlet of the dividing breeching and the outlet of the dividing breeching
expressed in percentage of p
6

---------------------- Page: 8 ----------------------
oSIST prEN 17407:2019
prEN 17407:2019 (E)
4 Description
4.1 Collecting head
A collecting head is comprised of at least the following components (see Figure 1):
— a body with several inlets and one or more outlets;
— fitting system;
— gripping device, optional;
— pressure gauge, optional;
— clapper/non return valve(s) when more than one inlet.
NOTE These components can consist of a single piece or several parts.

Key
1 body
Figure 1 — Components of a collecting head shown without fitting systems
4.2 Dividing breeching
A dividing breeching is comprised of at least the following components (see Figure 2):
— a body with one or more inlets and several outlets, with or without shut off device (e.g. operated by a
valve handle, a lever);
— fitting system;
— gripping device, optional;
— pressure gauge, optional;
— clapper/non return valve when more than one inlet.
NOTE These components may consist of a single piece or several parts.
7

---------------------- Page: 9 ----------------------
oSIST prEN 17407:2019
prEN 17407:2019 (E)
4.3 Combined collecting head and dividing breeching
A combined collecting head and dividing breeching is composed of elements described in 4.1 and 4.2 and
illustrated in Figure 2.

Key
1 body
2 gripping device
3 pressure gauge
4 clapper/non return valve
Figure 2 — Components of a combined collecting head and dividing breeching shown without
fitting systems
5 Mechanical characteristics
5.1 ColDiv types and classification
The ColDiv are classified by letters depending on nominal sizes of inlets and outlets as specified in
Table 1 and given in a clockwise manner starting from the left inlet.
Table 1 — Nominal size designation
Nominal Nominal
bore bore Hose size Denominating
metric imperial (ranges) code
size size
mm inch mm
25 1 19 to 25,4 D
50 1,5 2 38 to 55 C
75 2,5 3 65 to 75 B
110 4 4,5 100 to 110 A
125 5 125 E
150 6 150 F
8

---------------------- Page: 10 ----------------------
oSIST prEN 17407:2019
prEN 17407:2019 (E)
Possible combination inlets/outlets are specified in Table 2 (see examples 1 to 5).
EXAMPLE 1 Dividing breeching with one inlet (75 mm) and 3 outlets (52 mm – 75 mm – 52 mm) is classified as
follows: B-CBC (see Figure 3).

Figure 3 — Example of a dividing breeching type B-CBC with couplings
EXAMPLE 2 Combined collecting head and dividing breeching with two inlets (75 mm) and 3 outlets (52 mm –
75 mm – 52 mm) is classified as follows: BB-CBC (see Figure 4).

Figure 4 — Example of a combined collecting head and dividing breeching type BB-CBC with
couplings
9

---------------------- Page: 11 ----------------------
oSIST prEN 17407:2019
prEN 17407:2019 (E)
EXAMPLE 3 Combined collecting head and dividing breeching with two inlets (75 mm) and 4 outlets (25 mm –
75 mm – 75 mm – 25 mm) is class
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.