prEN 12094-13

SLOVENSKI STANDARD
oSIST prEN 12094-13:2016
01-julij-2016
Vgrajeni gasilni sistemi - Sestavni deli sistemov za gašenje s plinom - 13. del:
Zahteve in preskusne metode za kontrolne ventile in nepovratne ventile
Fixed firefighting systems - Components for gas extinguishing systems - Part 13:
Requirements and test methods for check valves and non-return valves
Ortsfeste Brandbekämpfungsanlagen - Bauteile für Löschanlagen mit gasförmigen
Löschmitteln - Teil 13: Anforderungen und Prüfverfahren für Rückflussverhinderer und
Rückschlagventile
Installations fixes de lutte contre l'incendie - Éléments d'installation d'extinction à gaz -
Partie 13 : Exigences et méthodes d'essai pour clapets anti-retour
Ta slovenski standard je istoveten z: prEN 12094-13
ICS:
13.220.10 Gašenje požara Fire-fighting
oSIST prEN 12094-13:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 12094-13:2016

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oSIST prEN 12094-13:2016


DRAFT
EUROPEAN STANDARD
prEN 12094-13
NORME EUROPÉENNE

EUROPÄISCHE NORM

May 2016
ICS 13.220.20 Will supersede EN 12094-13:2001
English Version

Fixed firefighting systems - Components for gas
extinguishing systems - Part 13: Requirements and test
methods for check valves and non-return valves
Installations fixes de lutte contre l'incendie - Éléments Ortsfeste Brandbekämpfungsanlagen - Bauteile für
d'installation d'extinction à gaz - Partie 13 : Exigences Löschanlagen mit gasförmigen Löschmitteln - Teil 13:
et méthodes d'essai pour clapets anti-retour Anforderungen und Prüfverfahren für
Rückflussverhinderer und Rückschlagventile
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 191.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12094-13:2016 E
worldwide for CEN national Members.

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oSIST prEN 12094-13:2016
prEN 12094-13:2016 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Terms and definitions . 5
3 Product characteristics . 6
3.1 General . 6
3.1.1 Compliance . 6
3.1.2 Connection threads . 6
3.2 Distribution of extinguishing media and Operational reliability . 6
3.2.1 Working pressure . 6
3.2.2 Free cross-sectional area . 7
3.3 Durability of distribution of extinguishing media and operational reliability . 7
3.3.1 Material specification . 7
3.3.2 Impact . 7
3.3.3 Corrosion . 8
3.3.4 Stress corrosion . 8
3.3.5 Vibration resistance . 8
4 Testing, assessment and sampling methods . 8
4.1 General . 8
4.1.1 Test conditions . 8
4.1.2 Test samples and order of tests . 8
4.2 Test for distribution of extinguishing media and operational reliability . 9
4.2.1 Working pressure . 9
4.2.2 Free cross-sectional area . 10
4.3 Test for durability of distribution of extinguishing media and operational reliability . 10
4.3.1 Material specification . 10
4.3.2 Impact . 10
4.3.3 Corrosion . 10
4.3.4 Stress corrosion . 11
4.3.5 Vibration resistance . 11
5 Marking and documentation . 11
5.1 Marking . 11
5.2 Documentation . 12
6 Assessment and verification of constancy of performance (AVCP) . 12
6.1 General . 12
6.2 Type testing . 13
6.2.1 General . 13
6.2.2 Test samples, testing and compliance criteria . 13
6.2.3 Test reports . 14
6.2.4 Shared other party results . 14
6.3 Factory production control (FPC) . 14
6.3.1 General . 14
6.3.2 Requirements . 15
6.3.3 Product specific requirements . 17
6.3.4 Initial inspection of factory and FPC . 18
6.3.5 Continuous surveillance of FPC . 18
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6.3.6 Procedure for modifications . 18
6.3.7 Pre-production products (e.g. prototypes) . 19
Annex ZA (informative) Relationship of this European Standard with Regulation (EU)
No. 305/2011 . 20

3

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oSIST prEN 12094-13:2016
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European foreword
This document (prEN 12094-13:2016) has been prepared by Technical Committee CEN/TC 191 “Fixed
firefighting systems”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12094-13:2001.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of Regulation (EU) 305/2011.
For relationship with Regulation (EU) 305/2011, see informative Annex ZA which is an integral part of
this document.
EN 12094, Fixed firefighting systems - Components for gas extinguishing systems, consists of the following
parts:
— Part 1: Requirements and test methods for electrical automatic control and delay devices
— Part 2: Requirements and test methods for non-electrical automatic control and delay devices
— Part 3: Requirements and test methods for manual triggering and stop devices
— Part 4: Requirements and test methods for container valve assemblies and their actuators
— Part 5: Requirements and test methods for high and low pressure selector valves and their actuators
— Part 6: Requirements and test methods for non-electrical disable devices
— Part 7: Requirements and test methods for nozzles for CO systems
2
— Part 8: Requirements and test methods for connectors
— Part 9: Requirements and test methods for special fire detectors
— Part 10: Requirements and test methods for pressure gauges and pressure switches
— Part 11: Requirements and test methods for mechanical weighing devices
— Part 12: Requirements and test methods for pneumatic alarm devices
— Part 13: Requirements and test methods for check valves and non-return valves
— Part 16: Requirements and test methods for odorizing devices for CO low pressure systems
2
NOTE This list includes standards that are in preparation and other standards may be added. For current
status of published standards, refer to www.cen.eu.
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1 Scope
This European Standard specifies requirements and describes test methods for check and non-return
valves intended to be used in gas extinguishing systems (i.e. CO , inert gas or halocarbon gas) installed
2
in buildings as a part of a complete operating system.
This European Standard is applicable to check valves installed between container valve and manifold
and non-return valves installed in pilot lines, except those valves which are tested in combination with
non-electrical control devices.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
check valve
component intended for installation between container valve and manifold, which permits flow only in
one direction
2.2
CO -high-pressure installation
2
fire extinguishing installation in which the CO is stored at ambient temperature
2
EXAMPLE The pressure of the CO in storage is p = 58,6 bar at 21 °C.
2 abs
2.3
CO -low-pressure installation
2
fire extinguishing installation in which the CO is stored at low temperature
2
Note 1 to entry: Normally at a temperature of -19 °C to 21 °C.
2.4
fill ratio
mass of extinguishing medium related to the net capacity of a container expressed as kg/l
2.5
gas extinguishing installation
system installed to provide fire protection
2.6
halocarbon gas
extinguishing agent that contains as primary components one or more organic compounds containing
one or more of the elements fluorine, chlorine, bromine or iodine
2.7
halocarbon gas installation
fire extinguishing installation in which the halocarbon gas is stored at ambient temperature
2.8
inert gas
non-liquefied gas or mixture of gases which extinguish the fire mainly by reducing the oxygen
concentration in the protected zone
EXAMPLE Argon, nitrogen or mixtures of these gases with CO .
2
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2.9
inert gas installation
fire extinguishing installation in which the inert gas is stored at ambient temperature
2.10
manifold
special pipe to collect the medium flow of two or more containers
2.11
non-return valve
component intended for installation in pilot lines, which permits flow only in one direction
2.12
resistance coefficient
value for the calculation of the pressure drop in a component under two-phase flow condition
2.13
two phase flow
partitial change of phase of a fluid from liquid to vapour under flowing conditions
2.14
working pressure
pressure at which the component is used in the system
3 Product characteristics
3.1 General
3.1.1 Compliance
In order to comply with this standard, check valves and non-return valves, shall meet the provisions of
Clause 4, which shall be verified by visual inspection or engineering assessment as described in Clause 5
and shall meet the requirements of the tests.
3.1.2 Connection threads
Connection threads shall conform to National Standards, European Standards or International
Standards.
3.2 Distribution of extinguishing media and Operational reliability
3.2.1 Working pressure
3.2.1.1 Function
Non-return and check valves shall be specified by the manufacturer for working pressure according to
Table 1.
Table 1 — Working pressure
CO high CO low
2 2
Inert gas Halocarbon gas
Type pressure pressure
component component
component component
 bar bar bar bar
a a
Check valve 140 Not applicable.
Non-return valve As specified by the manufacturer.
a
This value is given as the developed pressure in the container at 50 °C with the highest fill ratio/
superpressurization, where applicable.
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When tested in accordance with 4.2.1.1:
— check valves shall have reached their fully open position at a differential pressure of 3 bar
maximum; and
— non-return valves shall have reached their fully open position at a differential pressure of not
greater than 10 % of the minimum system pressure in the pilot system;
— non-return and check valves shall operate as intended.
Non-return and check valves shall meet these requirements and the requirements of 4.2.1.2 to 4.2.1.5.
The performance shall be expressed as the working pressure in bar.
3.2.1.2 Function at high and low temperature
When tested in accordance with 4.2.1.2.1 and 4.2.1.2.2, non-return and check valves shall operate in an
ambient temperature range encompassing -20 °C to +50 °C.
3.2.1.3 Internal pressure
When tested in accordance with 4.2.1.3, non-return and check valves shall not show any sign of
deterioration which could impair proper function, when pressurized up to 1,5 times the working
pressure listed in Table 1.
3.2.1.4 Strength
Non-return and check valves shall not show any sign of deterioration which could impair proper
function, when pressurized up to three times the working pressure listed in Table 1 and tested in
accordance with 4.2.1.4.
3.2.1.5 Leakage
Non-return and check valves shall be sufficiently tight for the purpose they are constructed for, when
tested in accordance with 4.2.1.5.
3.2.2 Free cross-sectional area
The manufacturer shall specify the free cross-sectional area of the minimum flow way of check valves
and non-return valves.
The free cross-sectional area of the minimum flow way of check valves and non-return valves shall be
within ± 10 % of the value specified by the manufacturer, when verified by the measurement check
described in 4.2.2.
2
The performance shall be expressed as the free cross-sectional area in mm .
3.3 Durability of distribution of extinguishing media and operational reliability
3.3.1 Material specification
Metal parts of non-return and check valves shall be made of stainless steel, copper, copper alloy or
corrosion-protected steel (e.g. galvanized steel, cadmium-plated steel, etc.) or other metal which has
been proved to be equally suitable (regarding e.g. corrosion resistance, ductile strength).
The performance shall be declared as description of the metal.
3.3.2 Impact
Check valves shall not be damaged, when tested in accordance with 4.3.2.
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This test only applies to check valves.
The performance shall be declared as “No damage”.
3.3.3 Corrosion
The test sample shall operate satisfactorily when tested in accordance with 4.2.1.1, after being
subjected to the corrosion test in accordance with 4.3.3.
The performance shall be declared as “No adverse effect”.
3.3.4 Stress corrosion
Any copper alloy part used in the component shall not crack, when tested in accordance with 4.3.4.
The performance shall be declared as “No cracks”.
3.3.5 Vibration resistance
The component shall not be damaged, when tested in accordance with 4.3.5.
The performance shall be declared as “No damage”.
4 Testing, assessment and sampling methods
4.1 General
4.1.1 Test conditions
The components shall be tested assembled as recommended for installation by the manufacturer. The
tests shall be carried out at a temperature of (25 ± 10) °C, except when otherwise stated.
The tolerance for all test parameters is 5 %, unless otherwise stated.
4.1.2 Test samples and order of tests
The specimens shall be tested according to the following test schedule (see Table 2).
Table 2 — Order of tests
Test order for
Test method
Sample A/B Sample C Sample D
4.2.2 Free cross-sectional area 1 1 1
4.2.1.3 Internal pressure 3
4.2.1.4 Strength 8
4.2.1.5 Leakage  2 3
a
4.3.2 Impact   2
4.2.1.1 Function 2/7 3
4.2.1.2 Function at high and low
4
temperature
4.3.3 Corrosion 6
4.3.4 Stress corrosion   4
4.3.5 Vibration 5
a
For check valves only.
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4.2 Test for distribution of extinguishing media and operational reliability
4.2.1 Working pressure
4.2.1.1 Function
4.2.1.1.1 The non-return or check valve shall be mounted in the position specified by the
manufacturer or, if not specified, in the position where maximum force is required. A force gauge shall
be connected to the centre of the sealing device. The sealing device shall be moved by increasing the
force to the fully open position. The force to the fully open position of the valve shall be measured. The
necessary pressure to operate the valve to the fully open position shall be calculated.
4.2.1.1.2 For check valves the test unit consists of a manifold with two connections for air or nitrogen
containers. The outlet shall be connected via a ball valve to a pipe with a length of (0,5 ± 0,1) m and a
diameter of the nominal diameter of the valve. A nozzle of at least 5 mm diameter is connected to this
pipe. Install check valves at both inlets of the manifold. One air or Nitrogen container of at least 40 litres
at the pressure developed in the system at 20 °C shall be installed and the ball valve at the outlet of the
manifold shall be closed. The container valve shall be opened and the function of the check valve at the
connection without a container shall be checked. After (5 ± 1) min the valve in the outlet shall be
opened and the function of both test samples shall be checked.
4.2.1.1.3 The non-return valve shall be connected to an air or Nitrogen supply at the pressure
developed in the system at 20 °C. A nozzle shall be fitted downstream of the valve with a cross-section
of half the cross-section ±10 % of the non-return valve and the gas shall flow for (60 ± 5) s through the
valve.
4.2.1.2 Function at high and low temperature
4.2.1.2.1 The test sample shall be conditioned at high temperature (50 ± 3) °C for (2 ± 0,5) h. The test
shall be repeated in accordance with 4.2.1.1.2 for check valves and 4.2.1.1.3 for non-return valves at the
pressure developed in the system at 50 °C.
4.2.1.2.2 The test sample shall be conditioned at low temperature (-20 ± 3) °C for (2 ± 0,5) h. The test
shall be repeated in accordance with 4.2.1.1.2 for check valves and 4.2.1.1.3 for non-return valves at the
pressure developed in the system at -20 °C.
4.2.1.3 Internal pressure
This test relates to the requirements specified in 3.2.1.3.
The non-return or check valve shall be connected via the outlet to a suitable hydraulic pressure supply.
Provision for venting shall be available.
The system of air shall be vented and the pressure shall be increased to 1,5 times the working pressure
and shall be maintained for 5 min.
The systems shall be depressurized and the function test shall be carried out in accordance with
4.2.1.1.2 or 4.2.1.1.3 respectively.
4.2.1.4 Strength
The inlet of the test sample shall be connected to a suitable hydraulic pressure supply and the outlet
shall be blocked. The system shall be vented and the pressure shall be increased to 3 times the working
pressure.
This pressure shall be maintained for a period of 10 min. At the end of this period the hydraulic
pressure shall be released.
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4.2.1.5 Leakage
The test unit shall consist of a pipe with the same diameter as the nominal diameter of the valve and a
length of (0,5 ± 0,1) m.
The check valve shall be installed with its outlet to the test pipe. An air, nitrogen or CO2 supply shall be
connected via a container valve. The check valve shall be pressurized to (20 ± 2) bar and plunged into a
water bath at an ambient temperature of (20 ± 5) °C. Maintain the pressure for a period of 2 min. Not
more than 20 bubbles per minute shall be formed downstream of valves for manifolds.
The non-return valve shall be installed with its outlet to the test pipe. An air, nitrogen or CO supply
2
shall be connected via a container valve. The non-return valve shall be pressurized to (3 ± 0,1) bar and
plunged into a water bath at an ambient temperature of (20 ± 5) °C. The pressure shall be maintained
for a test period of 2 min. Then the pressure shall be increased to the working pressure and maintained
for another test period of 2 min. In both test periods no bubbles shall be formed downstream of the
valve.
4.2.2 Free cross-sectional area
A visual and measurement check shall be made to determine whether the test samples correspond to
the description in the technical literature (drawings, parts lists, description of functions, operating and
installation instructions), and whether the samples comply with the general and marking requirements
of this European Standard.
4.3 Test for durability of distribution of extinguishing media and operational reliability
4.3.1 Material specification
A visual inspection of a specimen shall be conducted to verify that the check valves and non-return
valves meet the requirements as specified in 3.3.1.
4.3.2 Impact
4.3.2.1 This test relates to the requirements specified in 3.3.2.
4.3.2.2 The test unit shall consist of a pipe with the same diameter as the nominal diameter of the
valve and a length of (0,5 ± 0,1) m.
Check valves which are normally in the open position shall be installed with their outlet connected to
the test pipe. Check valves which are normally in the closed position shall be installed with their inlet
connected to the test pipe. An air, nitrogen or CO supply shall be connected via a quick opening high
2
pressure container valve. The valve shall be pressurized 10 times with the working pressure in
accordance with Table 1.
4.3.3 Corrosion
4.3.3.1 This test relates to the requirements specified in 3.3.3.
4.3.3.2 A specimen with open in- and outlet shall be suspended freely in its normal installation
attitudes.
The test set-up shall comprise a 5 l container, made of heat-resistant glass and with a corrosion-
resistant cover which is shaped to prevent condensate dripping onto the specimens. If a 10 l container
is used, the quantities of chemicals given below shall be doubled. The container shall be heated
electrically and the side walls shall be cooled with water. A thermostat shall regulate the heating so as
to maintain a temperature of approximately 45 °C inside the container. During testing water shall pass
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through a cooling coil wrapped around the container; it shall flow fast enough that its temperature at
the discharge point is below 30 °C.
The combination of heating and cooling shall be designed to ensure that vapours will condense on the
surface of the specimens. The sulphur dioxide atmosphere shall be generated in the 5 l container with a
3 3
solution of 20 g of sodium thiosulphate (Na S O x 5H O) in 500 cm of distilled water, to which 20 cm
2 2 3 2
3
of dilute sulphuric acid is added daily. The dilute sulphuric acid shall comprise 128 cm of one molar
sulphuric acid (H SO ) dissolved in 1 l of distilled water. The test specimens shall be removed from the
2 4
container after eight days; the container shall be cleaned. Then the procedure described above shall be
repeated for a further period of eight days.
After a total of sixteen days, the specimens shall be removed from the container and allowed to dry for
seven days at a temperature of (20 ± 5) °C at maximum relative humidity of 70 %.
4.3.4 Stress corrosion
4.3.4.1 This test relates to the requirements specified in 3.3.4.
4.3.4.2 The test specimens shall be degreased and then be exposed for ten days to a moist
atmosphere of ammonia and air, in a glass container of 10 l to 30 l in volume.
3
The aqueous ammonia solution shall have a specific weight of 0,94 kg/dm . The specimens shall be
3
positioned about 40 mm above the level of the liquid. The container shall be filled with 10 cm of the
solution for each litre of container volume. The atmosphere then comprises approximately 35 %
ammonia, 5 % water vapour and 60 % air. Testing shall be conducted at atmospheric pressure and at a
temperature of (34 ± 2) °C. A capillary tube shall be provided to equalize internal and external
pressures.
After testing, the specimens shall
...