Safety and control devices for gas burners and gas burning appliances - Automatic shut-off valves for operating pressure of above 500 kPa up to and including 6 300 kPa

This European Standard specifies the safety, design, construction and performance requirements and testing for automatic shut-off valves with or without modulating control functions (hereafter referred to as ‘valves’) for burners and appliances burning one or more gaseous fuels according to EN 437:2003+A1:2009.
This European Standard is applicable to valves with declared maximum inlet pressures of more than 500 kPa (5 bar) and up to and including 6 300 kPa (63 bar).
This European Standard is applicable to
-   electrically operated valves and to valves actuated by fluids including the pilot valves for these fluids if actuated electrically and including release valves, but not to any external electrical devices for switching the actuating energy;
-   automatic shut-off valves where the flow rate is controlled by external electrical signals proportional to the applied signal.
This European Standard is not applicable to valves specifically designed for use in transmission and distribution networks.
NOTE   Provisions for final product inspection and testing by the manufacturer are not specified.

Sicherheits- und Regeleinrichtungen für Gasbrenner und Gasbrennstoffgeräte - Automatische Absperrventile für einen Betriebsdruck über 500 kPa bis einschließlich 6 300 kPa

Diese Europäische Norm legt die Sicherheits-, Entwurfs-, Konstruktions- und Leistungsanforderungen und Prüfungen für automatische Absperrventile mit oder ohne regulierende Steuerfunktionen (im Folgenden als "Ventile" bezeichnet) für die Verwendung mit Gasbrennern und Gasgeräten zur Verbrennung von einem oder mehreren gasförmigen Brennstoffen nach EN 437:2003+A1:2009 fest.
Diese Europäische Norm gilt für Ventile mit angegebenen maximalen Eingangsdrücken von über 500 kPa (5 bar) bis einschließlich 6 300 kPa (63 bar).
Diese Europäische Norm gilt für:
-   elektrisch betriebene Ventile und für Ventile, die durch Steuermedien angesteuert werden, einschließlich der Steuerventile für diese Steuermedien, wenn sie elektrisch betrieben sind und Auslassventile enthalten, nicht jedoch für externe elektrische Schaltgeräte für die Stellantriebsenergie;
-   automatische Absperrventile mit Durchflussregelung durch externe elektrische Signale proportional zum angewendeten Signal.
Diese Europäische Norm gilt nicht für Ventile, die speziell für die Verwendung in Transport- und Verteilungs-netzen ausgelegt sind.
ANMERKUNG:   Vorschriften für die Inspektion und Prüfung des Endprodukts durch den Hersteller sind nicht festgelegt.

Équipements auxiliaires pour brûleurs à gaz et appareils à gaz - Robinets automatiques de sectionnement pour pression de service supérieure à 500 kPa et inférieure ou égale à 6 300 kPa

La présente Norme européenne spécifie les exigences de sécurité, de conception, de construction et de fonctionnement des robinets automatiques de sectionnement avec ou sans fonctions de robinets modulants pour brûleurs et appareils utilisant un ou plusieurs combustibles gazeux, dénommés ci-après« robinets », conformément à l’EN 437:2003+A1:2009.
La présente Norme européenne est applicable aux robinets dont la pression amont maximale déclarée est supérieure à 500 kPa (5 bar) et inférieure ou égale à 6 300 kPa (63 bar).
La présente Norme européenne est applicable :
-   aux robinets commandés électriquement et aux robinets actionnés par des fluides, y compris aux robinets pilotes de ces fluides s’ils sont commandés électriquement et aux robinets détendeurs, mais en aucun cas aux dispositifs électriques externes commutant l’énergie motrice de commande ;
-   aux robinets automatiques de sectionnement dans lesquels le débit est commandé par des signaux électriques externes, proportionnellement au signal reçu.
La présente Norme européenne n’est pas applicable aux robinets spécifiquement conçus pour une utilisation dans les réseaux de transport et de distribution.
NOTE   Les dispositions relatives à l’inspection finale et aux essais des produits par le fabricant ne sont pas spécifiées.

Varnostne in nadzorne naprave za plinske gorilnike in plinske aparate - Samodejni zaporni ventili za delovni tlak nad 500 kPa do vključno 6300 kPa

Ta evropski standard določa zahteve v zvezi z varnostjo, konstrukcijo in lastnostmi za samodejne zaporne in krmilne ventile, ki se uporabljajo s plinskimi gorilniki, aparati in podobnimi napravami (v nadaljevanju: ventili).
Ta evropski standard se uporablja za ventile z deklariranim najvišjim vhodnim tlakom od 500 kPa (5 barov) do vključno 6300 kPa (63 barov) za uporabo z enim ali več gorivnimi plini v skladu s standardom EN 437 (v hlapnem stanju).
Ta evropski standard se uporablja za:
– električno upravljane ventile in ventile, prožene s tekočino, pri katerih se pilotni ventili prožijo električno, vendar za preklapljanje pogonske energije ne uporabljajo zunanjih električnih naprav;
– ventile, pri katerih stopnjo pretoka upravljajo zunanji električni signali v nepovezanih korakih ali sorazmerno z uporabljenim signalom.
Ta evropski standard ne velja za ventile, ki so posebej izdelani za uporabo v omrežjih za prenos signalov in razdelilnih omrežjih.
OPOMBA Zahteve za končni pregled in preskus izdelka, ki ju izvede proizvajalec, niso določene.

General Information

Status
Published
Publication Date
17-Nov-2015
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
18-Nov-2015
Completion Date
18-Nov-2015

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Sicherheits- und Regeleinrichtungen für Gasbrenner und Gasbrennstoffgeräte - Automatische Absperrventile für einen Betriebsdruck über 500 kPa bis einschließlich 6 300 kPaÉquipements auxiliaires pour brûleurs à gaz et appareils à gaz - Robinets automatiques de sectionnement pour pression de service supérieure à 500 kPa et inférieure ou égale à 6300 kPaSafety and control devices for gas burners and gas burning appliances - Automatic shut-off valves for operating pressure of above 500 kPa up to and including 6300 kPa27.060.20Plinski gorilnikiGas fuel burners23.060.40Pressure regulatorsICS:Ta slovenski standard je istoveten z:EN 16678:2015SIST EN 16678:2016en,fr,de01-februar-2016SIST EN 16678:2016SLOVENSKI

STANDARD
SIST EN 16678:2016
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16678
November
t r s w ICS
t uä r x rä v r English Version

Safety and control devices for gas burners and gas burning appliances æ Automatic shutæoff valves for operating pressure of above

w r r kPa up to and including

u r r kPaÉquipements auxiliaires pour brûleurs à gaz et appareils à gaz æ Robinets automatiques de sectionnement pour pression de service supßrieure à

w r r kPa et infßrieure ou ßgale à
u r r kPa

Sicherheitsæ und Regeleinrichtungen für Gasbrenner und Gasbrennstoffgeräte æ Automatische Absperrventile für einen Betriebsdruck über

w r r kPa bis einschließlich
u r r kPa This European Standard was approved by CEN on
s { September
t r s wä

egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey andUnited Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels

t r s w CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

s x x y zã t r s w ESIST EN 16678:2016

EN 16678:2015 (E) 2 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 5 Units of measurement and test conditions ......................................................................................... 10 6 Construction requirements ...................................................................................................................... 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 Test for leakage of breather holes ......................................................................................................... 10 6.2.5 Screwed fastenings ...................................................................................................................................... 10 6.2.6 Jointing ............................................................................................................................................................. 11 6.2.7 Moving parts .................................................................................................................................................. 11 6.2.8 Sealing caps .................................................................................................................................................... 11 6.2.9 Dismantling and reassembly ................................................................................................................... 11 6.2.101 Closed position indicator switch .................................................................................................... 11 6.2.102 Valve with modulating control........................................................................................................ 11 6.2.103 Other controls assembled to a valve ............................................................................................. 11 6.2.104 Balanced valves .................................................................................................................................... 11 6.2.105 Additional requirements for shut-off function ......................................................................... 11 6.3 Materials .......................................................................................................................................................... 12 6.3.1 General material requirements .............................................................................................................. 12 6.3.2 Housing ............................................................................................................................................................ 12 6.3.3 Test for leakage of housing after removal of non-metallic parts ................................................ 12 6.3.4 Zinc alloys ....................................................................................................................................................... 12 6.3.5 Springs providing closing and/or sealing force ................................................................................ 12 6.3.6 Resistance to corrosion and surface protection ............................................................................... 12 6.3.7 Impregnation ................................................................................................................................................. 12 6.3.8 Seals for glands for moving parts ........................................................................................................... 12 6.3.101 Closure members ................................................................................................................................. 12 6.3.102 Parts transmitting the closing force .............................................................................................. 12 6.3.103 Balanced valves .................................................................................................................................... 12 6.3.104 Bellows .................................................................................................................................................... 12 6.3.105 Resistance to pressure ....................................................................................................................... 13 6.4 Gas connections ............................................................................................................................................ 13 6.4.1 Making connections..................................................................................................................................... 13 6.4.2 Connection sizes ........................................................................................................................................... 14 6.4.3 Threads ............................................................................................................................................................ 14 6.4.4 Union joints .................................................................................................................................................... 14 SIST EN 16678:2016

EN 16678:2015 (E) 3 6.4.5 Flanges .............................................................................................................................................................. 14 6.4.6 Compression fittings .................................................................................................................................... 14 6.4.7 Nipples for pressure test ............................................................................................................................ 14 6.4.8 Strainers ........................................................................................................................................................... 14 6.4.101 Welded connections ............................................................................................................................ 14 6.5 Electrical parts of the control ................................................................................................................... 14 6.5.1 General ............................................................................................................................................................. 14 6.5.2 Switching elements ...................................................................................................................................... 14 6.5.3 Electrical components ................................................................................................................................. 14 6.6 Protection against internal faults for the purpose of functional safety .................................... 15 6.6.1 Design and construction requirements ................................................................................................ 15 6.6.2 Class A ............................................................................................................................................................... 15 6.6.3 Class B ............................................................................................................................................................... 15 6.6.4 Class C ............................................................................................................................................................... 15 6.6.5 Circuit and construction evaluation ...................................................................................................... 15 6.101 Pneumatic and hydraulic actuating mechanisms ............................................................................. 15 7 Performance ................................................................................................................................................... 15 7.1 General ............................................................................................................................................................. 15 7.2 Leak-tightness ................................................................................................................................................ 15 7.3 Test for leak-tightness ................................................................................................................................ 15 7.4 Torsion and bending ................................................................................................................................... 16 7.5 Torsion and bending tests ......................................................................................................................... 16 7.6 Rated flow rate .............................................................................................................................................. 16 7.7 Test for rated flow rate ............................................................................................................................... 16 7.8 Durability......................................................................................................................................................... 16 7.8.1 Elastomers in contact with gas ................................................................................................................ 16 7.8.2 Marking ............................................................................................................................................................ 17 7.8.3 Tests for marking ......................................................................................................................................... 18 7.8.4 Resistance to scratching ............................................................................................................................. 18 7.8.5 Scratch test ...................................................................................................................................................... 18 7.8.6 Resistance to humidity ............................................................................................................................... 18 7.8.7 Humidity test .................................................................................................................................................. 18 7.9 Performance test for electronic controls ............................................................................................. 18 7.10 Long-term performance for electronic controls ............................................................................... 18 7.101 Closing function concerning remanence .............................................................................................. 18 7.101.1 Requirement .......................................................................................................................................... 18 7.101.2 Test of closing function ...................................................................................................................... 18 7.102 Closing force ................................................................................................................................................... 19 7.102.1 Requirement .......................................................................................................................................... 19 7.102.2 Test of closing force ............................................................................................................................. 19 7.103 Delay time and opening time .................................................................................................................... 19 7.103.1 Requirement .......................................................................................................................................... 19 7.103.2 Test of delay time and opening time ............................................................................................. 19 7.104 Closing time .................................................................................................................................................... 19 7.104.1 Requirement .......................................................................................................................................... 19 7.104.2 Test of closing time .............................................................................................................................. 19 7.105 Sealing force ................................................................................................................................................... 20 7.105.1 Requirement .......................................................................................................................................... 20 7.105.2 Test of sealing force ............................................................................................................................. 20 7.106 Closed position indicator switch ............................................................................................................. 20 7.106.1 Requirement .......................................................................................................................................... 20 7.106.2 Test of closed position indicator switch ...................................................................................... 21 SIST EN 16678:2016

EN 16678:2015 (E) 4 7.107 Endurance ....................................................................................................................................................... 21 7.107.1 Requirement .......................................................................................................................................... 21 7.107.2 Endurance test ...................................................................................................................................... 21 8 EMC/Electrical requirements .................................................................................................................. 22 8.1 Protection against environmental influences ................................................................................... 22 8.2 Supply voltage variations below 85 % of rated voltage ................................................................. 22 8.3 Short term voltage interruptions and decreases .............................................................................. 22 8.4 Supply frequency variations .................................................................................................................... 22 8.5 Surge immunity test .................................................................................................................................... 22 8.6 Electrical fast transient/burst ................................................................................................................. 22 8.7 Immunity to conducted disturbances ................................................................................................... 22 8.8 Immunity to radiated fields ...................................................................................................................... 22 8.9 Electrostatic discharge immunity test .................................................................................................. 22 8.10 Power frequency magnetic field immunity test ................................................................................ 22 8.11 Electrical requirements ............................................................................................................................. 23 8.11.101 General .................................................................................................................................................... 23 8.11.102 Electrical equipment .......................................................................................................................... 23 9 Marking, installation and operating instructions ............................................................................ 24 9.1 Marking ............................................................................................................................................................ 24 9.2 Installation and operating instructions ............................................................................................... 24 9.3 Warning notice .............................................................................................................................................. 25 Annex A (informative)

Gas connections in common use in the various countries ............................ 26 Annex B (informative)

Leak-tightness test – volumetric method ............................................................ 27 Annex C (informative)

Leak-tightness test – pressure loss method ....................................................... 28 Annex D (normative)

Conversion of pressure loss into leakage rate ..................................................... 29 Annex E (normative)

Electrical/electronic component fault modes ...................................................... 30 Annex F (normative)

Additional requirements for safety accessories and pressure accessories as defined in EU Directive 97/23/EC ............................................................................. 31 Annex G (informative)

Materials for pressurized parts .............................................................................. 32 Annex H (informative)

Additional materials for pressurized parts ....................................................... 33 Annex I (normative)

Requirements for controls used in DC supplied gas burners and gas burning appliances ...................................................................................................................................... 34 Annex J (normative)

Method for the determination of a Safety Integrity Level (SIL) ...................... 35 Annex K (normative)

Method for the determination of a Performance Level (PL)........................... 36 Annex L (informative)

Relationship between Safety Integrity Level (SIL) and Performance Level (PL) ........................................................................................................................................................ 37 Annex ZA (informative)

Relationship between this European Standard and the Essential Requirements of EU Directive 2009/142/EC relating to appliances burning gaseous fuels ................................................................................................................................................................... 38 Annex ZB (informative)

Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC relating to pressure equipment ............................. 41 Bibliography ................................................................................................................................................................. 43

Tables SIST EN 16678:2016

EN 16678:2015 (E) 5 Table 1 — Minimum value of safety factor F ...................................................................................................................... 13 Table 2 — Test method and acceptance criteria referred to the properties of elastomeric materials ...... 17 Table 3 — Sealing force requirements .................................................................................................................................. 20 Table 4 — Operating cycles ....................................................................................................................................................... 22 Table ZA.1 — Correspondence between this European Standard and Directive 2009/142/EC relating to appliances burning gaseous fuels ................................................................................................................................... 38 Table ZB.1 — Correspondence between this European Standard and Directive 97/23/EC relating to pressure equipment ............................................................................................................................................................. 41

Figures Figure 1 — Typical pilot and release valve application ....................................................................................................9

SIST EN 16678:2016

EN 16678:2015 (E) 6 European foreword This document (EN 16678:2015) 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 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 May 2016, and conflicting national standards shall be withdrawn at the latest by May 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. 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 EU Directives 2009/142/EC and 97/23/EC. For relationship with EU Directives, see informative Annexes ZA and ZB, which are an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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 the United Kingdom. SIST EN 16678:2016

EN 16678:2015 (E) 7 1 Scope This European Standard specifies the safety, design, construction and performance requirements and testing for automatic shut-off valves with or without modulating control functions (hereafter referred to as ‘valves’) for burners and appliances burning one or more gaseous fuels according to EN 437:2003+A1:2009. This European Standard is applicable to valves with declared maximum inlet pressures of more than 500 kPa (5 bar) and up to and including 6 300 kPa (63 bar). This European Standard is applicable to — electrically operated valves and to valves actuated by fluids including the pilot valves for these fluids if actuated electrically and including release valves, but not to any external electrical devices for switching the actuating energy; — automatic shut-off valves where the flow rate is controlled by external electrical signals proportional to the applied signal. This European Standard is not applicable to valves specifically designed for use in transmission and distribution networks. NOTE Provisions for final product inspection and testing by the manufacturer are not specified. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 161:2011+A3:2013, Automatic shut-off valves for gas burners and gas appliances EN 549:1994, Rubber materials for seals and diaphragms for gas appliances and gas equipment EN 682:2002, Elastomeric Seals — Materials requirements for seals used in pipes and fittings carrying gas and hydrocarbon fluids EN 1092-1:2007+A1:2013, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated — Part 1: Steel flanges EN 1092-2:1997, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated — Part 2: Cast iron flanges EN 1092-3:2003, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated — Part 3: Copper alloy flanges EN 1092-4:2002, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated — Part 4: Aluminium alloy flanges EN 1759-1:2004, Flanges and their joint — Circular flanges for pipes, valves, fittings and accessories, Class designated — Part 1: Steel flanges, NPS 1/2 to 24 EN 1759-3:2003, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, Class designated — Part 3: Copper alloy flanges SIST EN 16678:2016

EN 16678:2015 (E) 8 EN 1759-4:2003, Flanges and their joint — Circular flanges for pipes, valves, fittings and accessories, class designated — Part 4: Aluminium alloy flanges EN 10226-1:2004, Pipe threads where pressure tight joints are made on the threads — Part 1: Taper external threads and parallel internal threads — Dimensions,

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