FprEN 161

Automatic shut-off valves for gas burners and gas appliances

Shall be according to EN 13611:2019, Clause 1 with the following modification and addition:
Modification:
Replace the 1st paragraph of EN 13611:2019, Clause 1 by:
This document specifies the safety, design, construction, and performance requirements and testing for automatic shut-off valves for burners and appliances burning one or more gaseous fuels, hereafter referred to as ‘valves’. This document is applicable to valves with declared maximum inlet pressures up to and including 500 kPa and of nominal connection sizes up to and including DN 250.
Addition:
This document is applicable to:
-   electrically actuated valves;
-   valves actuated by fluids where the control valves for these fluids are actuated electrically, but not to any external electrical devices for switching the control signal or actuating energy;
-   valves where the flow rate is controlled by external electrical signals, either in discrete steps or proportional to the applied signal;
-   valves fitted with closed position indicator switches.
An assessment method for valve designs is given by this document.

Automatische Absperrventile für Gasbrenner und Gasgeräte

Dieses Dokument legt die Sicherheits-, Bau- und Funktionsanforderungen an automatische Absperrventile zur Verwendung mit Gasbrennern, Gasgeräten und ähnlichen Anwendungen, nachstehend Ventile genannt, fest.
Dieses Dokument gilt für Ventile mit angegebenen höchsten Eingangsdrücken bis einschließlich 500 kPa (5 bar) und Nennweiten bis einschließlich DN 250, die zur Verwendung mit einem oder mehreren Brenngasen nach EN 437 ausgelegt sind.
Dieses Dokument gilt für elektrisch betriebene Ventile und für Ventile, die durch Steuermedien angesteuert werden, wenn die Steuerventile für diese Medien elektrisch geschaltet werden; sie gilt nicht für externe elektrische Schalter, die das Steuersignal oder die Stellantriebsenergie beeinflussen.
Dieses Dokument gibt ein Bewertungsverfahren für die Auslegung und Konstruktion von Ventilen an.
Dieses Dokument gilt auch für Ventile, bei denen die Durchflussmenge durch externe elektrische Signale entweder in Stufen oder proportional zum angelegten Signal gesteuert wird.
Dieses Dokument gilt auch für Ventile mit Schaltern, die die geschlossene Stellung anzeigen.
ANMERKUNG Bestimmungen für die Prüfung von Endprodukten durch den Hersteller sind nicht festgelegt.
Dieses Dokument stellt Vorgehensweisen zur Bestimmung des Performance Levels (PL) in Übereinstimmung mit EN 13611:2019, Anhang K und Anhang L auf.

Robinets automatiques de sectionnement pour brûleurs à gaz et appareils à gaz

L’article 1 de la norme EN 13611:2019 s’applique avec la modification et l’addition suivantes :
Modification :
Le 1er paragraphe de l’article 1 de la norme EN 13611:2019 est remplacé par ce qui suit :
Le présent document spécifie les exigences de sécurité, de construction et de fonctionnement et les essais applicables aux robinets automatiques de sectionnement pour brûleurs à gaz, appareils à gaz et similaires, dénommés ci-après « robinets ». Ce document s'applique aux robinets dont la pression amont maximale déclarée est inférieure ou égale à 500 kPa, de diamètres nominaux de raccordement inférieurs ou égaux à DN 250.
Addition :
Le document est applicable aux :
- robinets de sectionnement commandés électriquement
- robinets de sectionnement actionnés par des fluides si les vannes de commande de ces fluides sont commandées électriquement, mais en aucun cas aux dispositifs électriques externes commutant le signal de commande ou libérant l'énergie motrice de commande.
- robinets dans lesquels le débit est commandé par des signaux électriques externes, soit par pas, soit proportionnellement au signal reçu.
- robinets équipés de contacts indicateurs de position de fermeture.
Une méthode d'évaluation de la conception des robinets est donnée par le présent document.
Le 4ième paragraphe de l’article 1 de la EN 13611 :2019 est supprimé.

Samodejni zaporni ventili za plinske gorilnike in plinske aparate

General Information

• Status: Not Published
• ICS: 23.060.10 - Globe valves
• Technical Committee: CEN/TC 58 - Safety and control devices for burners and appliances burning gaseous or liquid fuels
• Drafting Committee: CEN/TC 58/WG 13 - Mechanics
• Directive: 2014/68/EU - Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment
• Directive: 2016/426 - REGULATION (EU) 2016/426 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 9 March 2016 on appliances burning gaseous fuels and repealing Directive 2009/142/EC
• Mandate: M/BC/CEN/89/6 - Standardization request to CEN concerning appliances burning gaseous fuels
• Ref Project: kSIST FprEN 161:2022 - Automatic shut-off valves for gas burners and gas appliances

RELATIONS

• Revised: EN 161:2011+A3:2013 - Automatic shut-off valves for gas burners and gas appliances
• Effective Date: 21-Aug-2019

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 161:2020
01-maj-2020
Samodejni zaporni ventili za plinske gorilnike in plinske aparate
Automatic shut-off valves for gas burners and gas appliances
Automatische Absperrventile für Gasbrenner und Gasgeräte
Robinets automatiques de sectionnement pour brûleurs à gaz et appareils à gaz
Ta slovenski standard je istoveten z: prEN 161
ICS:
23.060.10 Zapirni ventili (kroglasti) Globe valves
27.060.20 Plinski gorilniki Gas fuel burners
oSIST prEN 161:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 161:2020
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oSIST prEN 161:2020
DRAFT
EUROPEAN STANDARD
prEN 161
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2020
ICS 23.060.10 Will supersede EN 161:2011+A3:2013
English Version
Automatic shut-off valves for gas burners and gas
appliances

Robinets automatiques de sectionnement pour Automatische Absperrventile für Gasbrenner und

brûleurs à gaz et appareils à gaz Gasgeräte

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 58.

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, Norway,

Poland, Portugal, Republic of North Macedonia, 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

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 161:2020 E

worldwide for CEN national Members.
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oSIST prEN 161:2020
prEN 161:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 6

1 Scope .............................................................................................................................................................. 7

2 Normative references .............................................................................................................................. 7

3 Terms and definitions ............................................................................................................................. 8

4 Classification ............................................................................................................................................... 9

4.1 Classes of control ....................................................................................................................................... 9

4.2 Groups of control .................................................................................................................................... 10

4.3 Classes of control functions ................................................................................................................ 10

4.4 Types of DC supplied controls ........................................................................................................... 10

5 Test conditions and uncertainty of measurements ................................................................... 10

6 Design and construction ...................................................................................................................... 10

6.1 General ....................................................................................................................................................... 10

6.2 Mechanical parts of the control ........................................................................................................ 10

6.2.1 Appearance ............................................................................................................................................... 10

6.2.2 Holes ........................................................................................................................................................... 10

6.2.3 Breather holes ......................................................................................................................................... 10

6.2.4 Screwed fastenings ................................................................................................................................ 10

6.2.5 Jointing ....................................................................................................................................................... 10

6.2.6 Moving parts ............................................................................................................................................ 11

6.2.7 Sealing caps .............................................................................................................................................. 11

6.2.8 Dismantling and reassembly.............................................................................................................. 11

6.2.9 Auxiliary channels and orifices ......................................................................................................... 11

6.2.10 Presetting device .................................................................................................................................... 11

6.2.101 Design ......................................................................................................................................................... 11

6.2.102 Closed position indicator switch ...................................................................................................... 11

6.2.103 Valve with modulating control .......................................................................................................... 11

6.2.104 Controls assembled to a valve ........................................................................................................... 11

6.2.105 Balanced valves ....................................................................................................................................... 11

6.2.106 Closing and sealing ................................................................................................................................ 12

6.2.107 Additional requirements for shut-off function ............................................................................ 13

6.3 Materials .................................................................................................................................................... 13

6.3.1 General material requirements ........................................................................................................ 13

6.3.2 Housing ...................................................................................................................................................... 13

6.3.3 Zinc alloys ................................................................................................................................................. 13

6.3.4 Springs........................................................................................................................................................ 13

6.3.5 Resistance to corrosion and surface protection ......................................................................... 13

6.3.6 Impregnation ........................................................................................................................................... 14

6.3.7 Seals for glands for moving parts ..................................................................................................... 14

6.3.101 Closure members ................................................................................................................................... 14

6.4 Gas connections ...................................................................................................................................... 14

6.4.1 Making connections ............................................................................................................................... 14

6.4.2 Connection sizes ..................................................................................................................................... 14

6.4.3 Threads ...................................................................................................................................................... 14

6.4.4 Union joints .............................................................................................................................................. 14

6.4.5 Flanges ....................................................................................................................................................... 14

6.4.6 Compression fittings ............................................................................................................................. 14

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oSIST prEN 161:2020
prEN 161:2020 (E)

6.4.7 Nipples for pressure test ...................................................................................................................... 14

6.4.8 Shall be according to EN 13611:2019, 6.4.7 Strainers............................................................... 14

6.5 Text is already in EN 13611. Electronic parts of the control................................................... 15

6.5.1 General ....................................................................................................................................................... 15

6.5.2 Switching elements ................................................................................................................................ 15

6.5.3 Electrical components ........................................................................................................................... 15

6.6 Protection against internal faults for the purpose of functional safety .............................. 15

6.101 Pneumatic and hydraulic actuating mechanisms ....................................................................... 15

7 Performance ............................................................................................................................................. 15

7.1 General ....................................................................................................................................................... 15

7.2 Leak-tightness .......................................................................................................................................... 16

7.3 Torsion and bending ............................................................................................................................. 16

7.4 Rated flow rate......................................................................................................................................... 16

7.4.1 Requirement ............................................................................................................................................. 16

7.4.2 Test .............................................................................................................................................................. 16

7.4.3 Conversion of air flow rate .................................................................................................................. 16

7.5 Durability ................................................................................................................................................... 16

7.6 Performance tests for electronic controls ..................................................................................... 16

7.7 Long-term performance for electronic controls ......................................................................... 17

7.8 Data exchange .......................................................................................................................................... 17

7.101 Closing function concerning remanence ........................................................................................ 17

7.101.1 Requirement ............................................................................................................................................. 17

7.101.2 Test of closing function ......................................................................................................................... 17

7.102 Closing force ............................................................................................................................................. 17

7.102.1 Requirement ............................................................................................................................................. 17

7.102.2 Test of closing force ............................................................................................................................... 18

7.103 Delay time and opening time .............................................................................................................. 18

7.103.1 Requirement ............................................................................................................................................. 18

7.103.2 Test of delay time and opening time ................................................................................................ 18

7.104 Closing time .............................................................................................................................................. 18

7.104.1 Requirement ............................................................................................................................................. 18

7.104.2 Test of closing time ................................................................................................................................ 19

7.105 Sealing force ............................................................................................................................................. 19

7.105.1 Requirement ............................................................................................................................................. 19

7.105.2 Test .............................................................................................................................................................. 20

7.106 Closed position indicator switch ....................................................................................................... 20

7.106.1 Requirement ............................................................................................................................................. 20

7.106.2 Test .............................................................................................................................................................. 20

7.107 Endurance ................................................................................................................................................. 20

7.107.1 Requirement ............................................................................................................................................. 20

7.107.2 Endurance test ......................................................................................................................................... 21

7.107.3 Endurance test for closed position indicator switch ................................................................. 22

7.107.4 Flow characteristics ............................................................................................................................... 22

8 Electrical requirements ........................................................................................................................ 23

8.1 General ....................................................................................................................................................... 23

8.2 Protection by enclosure ....................................................................................................................... 23

8.101 Switches...................................................................................................................................................... 23

8.102 Plug connections ..................................................................................................................................... 23

8.103 Power saving circuits ............................................................................................................................ 24

8.103.1 Closing of the valve ................................................................................................................................. 24

8.103.2 Overheating .............................................................................................................................................. 24

8.103.3 Test of power-saving circuits ............................................................................................................. 24

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oSIST prEN 161:2020
prEN 161:2020 (E)

9 Electromagnetic compatibility (EMC) ............................................................................................. 24

9.1 Protection against environmental influences ............................................................................. 24

9.2 Supply voltage variations below 85 % of rated voltage ........................................................... 24

9.3 Voltage dips and interruptions ......................................................................................................... 24

9.4 Supply frequency variations .............................................................................................................. 24

9.5 Surge immunity tests ............................................................................................................................ 24

9.6 Electrical fast transient/burst ........................................................................................................... 24

9.7 Immunity to conducted disturbances induced by radio frequency fields ......................... 25

9.8 Immunity to radiated disturbances induced by radio frequency fields............................. 25

9.9 Electrostatic discharge tests .............................................................................................................. 25

9.10 Power frequency magnetic field immunity tests ........................................................................ 25

9.11 Harmonics and interharmonics including mains signalling at a. c. power port, low

frequency immunity tests ................................................................................................................... 25

10 Marking, installation and operating instructions ...................................................................... 25

10.1 Marking ...................................................................................................................................................... 25

10.2 Installation and operating instructions ......................................................................................... 26

10.3 Warning notice ........................................................................................................................................ 26

Annex A (informative) Abbreviations and Symbols ..................................................................................... 27

Annex B (informative) Leak-tightness test for gas controls – volumetric method ............................ 28

Annex C (informative) Leak-tightness test for gas controls – pressure loss method ....................... 29

Annex D (normative) Calculation of pressure loss into leakage rate ..................................................... 30

Annex E (normative) Electrical/electronic component fault modes ...................................................... 31

Annex F (normative) Additional requirements for safety accessories and pressure

accessories as defined in EU Directive 2014/68/EU ................................................................. 32

Annex G (normative) Materials for pressurized parts ................................................................................. 33

Annex H (informative) Additional materials for pressurized parts ....................................................... 34

Annex I (normative) Requirements for controls used in DC supplied burners and

appliances burning gaseous or liquid fuels .................................................................................. 35

Annex J (normative) Method for the determination of a Safety Integrity Level (SIL) ...................... 36

Annex K (normative) Method for the determination of a Performance Level (PL)........................... 37

K.1 Scope ........................................................................................................................................................... 37

K.2 Normative references ........................................................................................................................... 37

K.3 Terms and definitions .......................................................................................................................... 37

K.4 Performance............................................................................................................................................. 37

K.4.1 Operation mode ...................................................................................................................................... 37

K.4.2 PL and field data evaluation ............................................................................................................... 37

K.4.3 Hardware failure tolerance (HFT) ................................................................................................... 37

K.4.4 Common cause failure (CCF) .............................................................................................................. 37

K.4.5 Safe failure fraction (SFF) .................................................................................................................... 38

K.4.6 Determination of the B value ..................................................................................................... 38

10d

K.4.7 Determination of Performance Level (PL) .................................................................................... 39

K.4.8 PFHD values for structures consisting of two controls ............................................................ 39

K.5 Marking, installation and operating instructions ...................................................................... 39

K.5.1 Marking ...................................................................................................................................................... 39

K.5.2 Installation and operating instructions ......................................................................................... 39

K.5.3 Warning notice ........................................................................................................................................ 39

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oSIST prEN 161:2020
prEN 161:2020 (E)

Annex L (informative) Relationship between Safety Integrity Level (SIL) and Performance

Level (PL) ................................................................................................................................................... 40

Annex M (normative) Reset functions ................................................................................................................ 41

Annex N (informative) Guidance document on environmental aspects ................................................ 42

Annex O (normative) Seals of elastomer, cork and synthetic fibre mixtures ...................................... 43

Annex AA (informative) Model of a FMEA for valves .................................................................................... 44

Annex ZA (informative) Relationship between this European Standard and the essential

requirements of Regulation (EU) 2016/426 aimed to be covered ....................................... 62

Annex ZB (informative) Relationship between this European Standard and the essential

requirements of Directive 2014/68/EU aimed to be covered ............................................... 66

Bibliography ................................................................................................................................................................. 69

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oSIST prEN 161:2020
prEN 161:2020 (E)
European foreword

This document (prEN 161:2020) has been prepared by Technical Committee CEN/TC 58 “Safety and

control devices for burners and appliances burning gaseous or liquid fuels”, the secretariat of which is

held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 161+A3:2011:2013.

This document has been prepared under a standardization request given to CEN by the European

Commission and the European Free Trade Association, and supports essential requirements of

EU Directive(s).

For relationship with EU Directive(s), see informative Annex ZA and B, which is an integral part of this

document.

This document is intended to be used in conjunction with EN 13611:2007+A2:2011. This document

refers to clauses of EN 13611:2007+A2:2011 or adapts clauses by stating “with the following

modification”, “with the following addition”, “is replaced by the following” or "is not applicable" in the

corresponding clause. This European Standard adds clauses or sub-clauses to the structure of

EN 13611:2007+A2:2011 which are particular to this European Standard. Subclauses which are

additional to those in EN 13611:2019 are numbered starting from 101. Additional Annexes are

designed as Annex AA, BB, CC, etc.

It should be noted that the following significant editorial changes compared to the previous edition

have been incorporated in this European Standard:
a) alignment to EN 13611:2018;
b) terms and definitions are aligned to EN 13611:2018.
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oSIST prEN 161:2020
prEN 161:2020 (E)
1 Scope

This document specifies the safety, construction and performance requirements for automatic shut-off

valves for use with gas burners, gas appliances and similar use, hereafter referred to as ‘valves’.

This document is applicable to valves with declared maximum inlet pressures up to and including

500 kPa (5 bar) of nominal connection sizes up to and including DN 250 for use with one or more fuel

gases in accordance with EN 437.

This document is applicable to electrically operated valves and to valves actuated by fluids where the

control valves for these fluids are actuated electrically, but not to any external electrical devices for

switching the control signal or actuating energy.
An assessment method for valve designs is given by this document.

This document is also applicable to valves where the flow rate is controlled by external electrical

signals, either in discrete steps or proportional to the applied signal.

This document is also applicable to valves fitted with closed position indicator switches.

NOTE Provisions for final product inspection and testing by the manufacturer are not specified.

This document establishes methodologies for the determination of a Performance Level (PL) in

accordance with EN 13611:2019, Annexes K and L.
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 30 (all parts), Domestic cooking appliances burning gas

EN 298:2012, Automatic gas burner control systems for gas burners and gas burning appliances with or

without fans

EN 13611:2019, Safety and control devices for gas burners and gas burning appliances — General

requirements

EN 13906-1, Cylindrical helical springs made from round wire and bar — Calculation and desi

...