Corrugated safety metal hose assemblies for the connection of domestic appliances using gaseous fuels

This European Standard specifies the requirements of performance, the material and the test methods of corrugated flexible safety metallic hose assemblies for the connection of domestic appliances, in order to achieve save operation.
The corrugated metal gas hose assemblies according to this European Standard are suitable for the connection of domestic appliances inside or outside a dwelling, using gas at a pressure lower than 0,5 bar.

Gewellte, metallene Sicherheits-Gasschlauchleitungen für den Anschluss von Haushalts-Gasgeräten

Diese Norm legt die Anforderungen an die Gebrauchstauglichkeit, die Werkstoffe und Prüfverfahren von gewellten, metallenen Sicherheits-Gasschlauchleitungen für den Anschluss von Haushaltsgeräten fest, um ihre sichere Funktion zu erreichen.
Die nach diesem Dokument spezifizierten gewellten, metallenen Gasschlauchleitungen können für den Anschluss von Haushalts-Gasgeräten im Inneren oder außerhalb von Wohnungen bei einem Gasdruck von weniger als 0,5 bar eingesetzt werden.

Tuyaux flexibles métalliques onduleux de securité pour le raccordement d'appareils a usage domestique utilisant des gaz combustibles

La présente norme décrit les exigences de performance, les matériaux et les méthodes d’essai des tuyaux flexibles métalliques onduleux de raccordement des appareils domestiques pour une utilisation en toute sécurité.
Les tuyaux métalliques onduleux pour le gaz définis ici sont destinés au raccordement d’appareils ménagers a l’intérieur ou a l’extérieur d’un logement, utilisant du gaz a une pression inférieure a 0,5 bar.

Rebrasta fleksibilna varnostna kovinska cev za priključitev gospodinjskih plinskih aparatov

General Information

Status
Published
Publication Date
11-Sep-2007
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
11-Sep-2007
Due Date
16-Nov-2007
Completion Date
12-Sep-2007

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Standard
SIST EN 14800:2007
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.DSDUDWRYGewellte, metallene Sicherheits-Gasschlauchleitungen für den Anschluss von Haushalts-GasgerätenTuyaux flexibles métalliques onduleux de securité pour le raccordement d'appareils a usage domestique utilisant des gaz combustiblesCorrugated safety metal hose assemblies for the connection of domestic appliances using gaseous fuels91.140.40Sistemi za oskrbo s plinomGas supply systems77.140.75Jeklene cevi in cevni profili za posebne nameneSteel pipes and tubes for specific useICS:Ta slovenski standard je istoveten z:EN 14800:2007SIST EN 14800:2007en,fr,de01-oktober-2007SIST EN 14800:2007SLOVENSKI

STANDARD
SIST EN 14800:2007

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14800March 2007ICS 23.040.70 English VersionCorrugated safety metal hose assemblies for the connectiondomestic appliance using gaseous fuelsTuyaux flexibles métalliques onduleux de securité pour leraccordement d'appareils à usage domestique utilisant desgaz combustiblesGewellte, metallene Sicherheits-Gasschlauchleitungen fürden Anschluss von Haushalts-GasgerätenThis European Standard was approved by CEN on 6 December 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14800:2007: ESIST EN 14800:2007

EN 14800:2007 (E) 2 Contents Page Foreword..............................................................................................................................................................5 Introduction.........................................................................................................................................................6 1 Scope......................................................................................................................................................7 2 Normative references............................................................................................................................7 3 Terms and definitions...........................................................................................................................8 4 Construction requirements...................................................................................................................9 4.1 General....................................................................................................................................................9 4.2 Nominal size.........................................................................................................................................10 4.3 Materials...............................................................................................................................................10 4.4 Requirements for the connection between hose and fittings.........................................................10 4.5 End fittings design requirements.......................................................................................................10 4.6 CMG hose assembly lengths..............................................................................................................11 4.7 Corrosion requirements......................................................................................................................11 4.8 Insulation requirements......................................................................................................................11 4.9 Electric conductivity requirements....................................................................................................11 4.10 Hygiene.................................................................................................................................................11 4.11 Cover materials....................................................................................................................................11 4.12 Dangerous substances.......................................................................................................................11 5 Performance requirements and tests................................................................................................12 5.1 General..................................................................................................................................................12 5.2 Test sequence schedule.....................................................................................................................12 5.3 Leak-tightness......................................................................................................................................14 5.3.1 Requirements.......................................................................................................................................14 5.3.2 Test procedure.....................................................................................................................................14 5.4 Structural strength...............................................................................................................................14 5.4.1 Requirements.......................................................................................................................................14 5.4.2 Test procedure.....................................................................................................................................14 5.5 Flow rate...............................................................................................................................................14 5.5.1 Requirements.......................................................................................................................................14 5.5.2 Test procedure.....................................................................................................................................15 5.5.3 Conversion of air flow rate.................................................................................................................17 5.6 Electric continuity................................................................................................................................18 5.6.1 Requirements.......................................................................................................................................18 5.6.2 Test procedure.....................................................................................................................................18 5.7 Tension.................................................................................................................................................18 5.7.1 Requirements.......................................................................................................................................18 5.7.2 Test procedure.....................................................................................................................................18 5.8 Durability of marking...........................................................................................................................19 5.8.1 Requirements.......................................................................................................................................19 5.8.2 Test procedure.....................................................................................................................................19 5.9 Working temperature...........................................................................................................................20 5.9.1 Requirements.......................................................................................................................................20 5.9.2 Test procedure.....................................................................................................................................20 5.10 Corrosion resistance...........................................................................................................................20 5.10.1 Requirements.......................................................................................................................................20 5.10.2 Test procedure.....................................................................................................................................20 SIST EN 14800:2007

EN 14800:2007 (E) 3 5.11 Reaction to fire....................................................................................................................................21 5.11.1 Requirements.......................................................................................................................................21 5.11.2 Testing and assessment methods.....................................................................................................21 5.12 Resistance to high temperature.........................................................................................................22 5.12.1 Requirements.......................................................................................................................................22 5.12.2 Test procedure.....................................................................................................................................22 5.13 Suppleness..........................................................................................................................................22 5.13.1 Requirements.......................................................................................................................................22 5.13.2 Test procedure.....................................................................................................................................22 5.14 Bending performance.........................................................................................................................22 5.14.1 Bending performance for type 1 hoses with non-restricted bend radius.....................................22 5.14.2 Bending performance for type 2 hoses having a restricted bend radius......................................24 5.15 Flexing resistance...............................................................................................................................25 5.15.1 Requirements.......................................................................................................................................25 5.15.2 Test procedure.....................................................................................................................................25 5.16 Torsion resistance...............................................................................................................................26 5.16.1 Requirements.......................................................................................................................................26 5.16.2 Test procedure.....................................................................................................................................27 5.17 Impact/crushing resistance................................................................................................................27 5.17.1 Requirements.......................................................................................................................................27 5.17.2 Test procedure.....................................................................................................................................28 5.18 Penetration resistance........................................................................................................................28 5.18.1 Requirements.......................................................................................................................................28 5.18.2 Test method.........................................................................................................................................28 5.19 End fittings...........................................................................................................................................29 5.19.1 Requirements.......................................................................................................................................29 5.19.2 Test procedures...................................................................................................................................29 5.19.3 End fittings bodies manufactured from more than one part..........................................................30 6 Evaluation of conformity....................................................................................................................31 6.1 General.................................................................................................................................................31 6.2 Type testing.........................................................................................................................................31 6.2.1 Initial type testing................................................................................................................................31 6.2.2 Subsequent type testing.....................................................................................................................32 6.3 Factory production control (FPC)......................................................................................................32 6.3.1 General.................................................................................................................................................32 6.3.2 FPC requirements for all manufacturers...........................................................................................32 6.3.3 Manufacturer-specific FPC system requirements...........................................................................34 6.4 Installation instruction........................................................................................................................35 6.5 Packaging.............................................................................................................................................36 Annex A (informative)

Hose fitting design requirements for connection to the gas supply pipework, to the pressure reduction device of portable gas bottles or to domestic appliance..............................................................................................................................................37 Annex B (normative)

Thermal attack by a single burning item....................................................................53 B.1 General.................................................................................................................................................53 B.2 Scope....................................................................................................................................................54 B.3 Standardized mounting and fixing....................................................................................................54 Annex C (normative)

Single-flame source test..............................................................................................55 C.1 General.................................................................................................................................................55 C.2 Scope....................................................................................................................................................55 C.3 Standardized mounting and fixing....................................................................................................56 C.4 Test definition......................................................................................................................................56 C.5 Test duration........................................................................................................................................56 Annex ZA (informative)

Clauses of this EN addressing the provisions of EU Construction Products Directive...............................................................................................................................57 ZA.1 Scope and relevant characteristics...................................................................................................57 SIST EN 14800:2007

EN 14800:2007 (E) 4 ZA.2 Procedure for attestation of conformity of corrugated safety metal hose assemblies..................59 ZA.2.1 Systems of attestation of conformity................................................................................................59 ZA.2.2 EC Certificate and Declaration of conformity...................................................................................61 ZA.3 CE Marking and labelling....................................................................................................................62 Bibliography......................................................................................................................................................66 SIST EN 14800:2007

EN 14800:2007 (E) 5 Foreword This document (EN 14800:2007) has been prepared by Technical Committee CEN/TC 236 “Non industrial manually operated shut-off valves for gas and particular combinations valves-other products”, the secretariat of which is held by UNI. 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 September 2007, and conflicting national standards shall be withdrawn at the latest by December 2008. 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 Directive 89/106/EC. For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. For corrugated metal gas hose assemblies pre-installed to a gas appliance and put on the market as one unit the Gas Appliance Directive is applicable. Additional requirements may apply. 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SIST EN 14800:2007

EN 14800:2007 (E) 6 Introduction This European Standard contains product characteristics relating to the safety of persons, animal and property and the protection of their environment. The objective of this European Standard is to achieve safe operation of corrugated metal gas hose assemblies by specifying the requirements of performance, materials and test methods. These assemblies are designed for the use with fixed applications; they may also be used for the connection of movable applications. This European Standard is based on a balance of requirements given by the major national European Gas Authorities for corrugated metal hose assemblies for the connection of domestic gas appliances. It reflects the recognised practise and technology of products approved today as well as the present culture of usage by the consumer. The European Standard describes two product types, one with an unrestricted bending radius and one with a restricted bending radius. The introduction of new technologies supported by National Gas Authorities can require the adoption of this European Standard regarding individual requirements and tests. Attention is drawn to the need for careful quality control as given in EN ISO 9001. SIST EN 14800:2007

EN 14800:2007 (E) 7

1 Scope This European Standard specifies the requirements of performance, the material and the test methods of corrugated safety metal gas hose assemblies for the connection of domestic appliances, in order to achieve save operation. The corrugated metal gas hose assemblies according to this European Standard are suitable for the connection of domestic appliances inside or outside a dwelling, using gas at a pressure lower than 0,5 bar. 2 Normative references The following referenced documents are indispensable for the application 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 437:2003, Test gases — Test pressures — Appliance categories EN 549, Rubber materials for seals and diaphragms for gas appliances and gas equipment EN 1418, Welding personnel — Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials EN 1775:1998, Gas supply — Gas pipework for buildings — Maximum operating pressure ≤ 5 bar — Functional recommendations EN 13133, Brazing — Brazer approval EN 13134, Brazing — Procedure approval EN 13501-1:2006, Fire classification of construction products and building elements — Part 1: Classification using test data from reaction to fire tests EN 13823, Reaction to fire tests for building products — Building products excluding floorings exposed to the thermal attack by a single burning item prEN 15069:2004, Safety gas connection valves for metal hose assemblies used for the connection of domestic appliances using gaseous fuel EN ISO 9001:2000, Quality management systems — Requirements (ISO 9001:2000) EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9227:2006) EN ISO 10380, Pipework — Corrugated metal hoses and hose assemblies (ISO 10380:2003) EN ISO 11925-2, Reaction to fire tests — Ignitability of building products subjected to direct impingement of flame — Part 2: Single-flame source test (ISO 11925-2:2002) SIST EN 14800:2007

EN 14800:2007 (E) 8

3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 domestic appliance appliance intended for use by individual householders inside or outside a dwelling 3.2 corrugated safety metal gas hose assembly element of flexible pipe-work to be fitted between the gas supply valve or the socket of a quick disconnect device and the appliance inlet connection, consisting of a corrugated metal hose, its end fittings with appropriate gaskets and, if required, an armouring and/or an external protection 3.3 CMG hose assembly abbreviation used in this European Standard to denote a corrugated safety metal gas hose assembly as defined in 3.2 3.4 corrugated metal hose pressure-tight hose made from tube or from welded strip with corrugations, helicoidal or annular to the axis of the hose, made by deforming the metal 3.5 end fittings components attached to a metal hose so as to constitute a metal hose assembly 3.6 screwed connection leak-tight threaded connection, which can only be assembled and disassembled with an appropriate tool 3.7 integrated non-detachable fitting end fitting, permanently attached to the corrugated metal hose by such a method as welding or brazing, so as to ensure that it can not be detached without destruction or alteration 3.8 safety quick connection device end fitting consisting of two parts that is designed to permit quick connection and disconnection without tools, leak-tight so that it prevents the release of gas from the upstream pipe work when disconnected and designed to prevent accidental disconnection and incorrect operation 3.9 armouring external reinforcement, partly or wholly covering the corrugated metal hose, which is designed to improve the mechanical characteristics of the hose 3.10 external protection outer cover used to protect the hose from environmental and other outside influences SIST EN 14800:2007

EN 14800:2007 (E) 9 3.11 nominal length length of a CMG hose assembly measured along its axis, including its end fittings, but excluding any swivel nuts. CMG hose assemblies incorporating the plug of a quick connection device are measured to the point where the plug enters the socket in the working position 3.12 non-restricted bending radius radius measured to the centre line of the hose 3.13 restricted bending radius bending radius, which by the use of an additional component is limited to a minimum value measured to the centre line of the hose. A lower value can only be reached by permanently deforming or destroying the additional component 3.14 rated flow-rate flow rate, under standard reference conditions, at a given pressure drop 3.15 seal gasket non metallic element assuring leak-tightness between two adjacent elements, be they fixed or moveable in respect to each other 3.16 swivel joint rotary joint element or device that enables a continuous axial rotation of the hose with respect to the gas inlet or the appliance, and which functions without reducing the leak-tightness of the flexible connection 3.17 gas first, second and third family gas as referred to in EN 437:2003, Table 1.

These gases are commonly referred to as manufactured gases, natural gases or liquefied petroleum gases (LPG) 4 Construction requirements 4.1 General These requirements shall ensure that the construction of a CMG hose assembly which, when properly installed and correctly used, under normal chemical, mechanical and thermal conditions will provide long term safe operation without degradation. CMG hose assemblies are subdivided into: type 1: CMG hose assemblies having no additional component limiting their bending radii; type 2: CMG hose assemblies having an additional component limiting their bending radii. SIST EN 14800:2007

EN 14800:2007 (E) 10 4.2 Nominal size The nominal size of CMG hose assemblies shall be designated either DN 8 or DN 12 and shall be determined by the flow rate requirements given in Table 2. For the purpose of this European Standard, DN 10 and DN 15 fittings shown in Annex A are considered as DN 8 and DN 12 respectively. 4.3 Materials The CMG hose assembly described by this European Standard shall be manufactured from materials which shall withstand the performance and test requirements given in Clause 5. The corrugated metal hose shall be manufactured from metal(s) no less durable and robust than stabilized austenitic stainless steel and fulfil in addition to the requirements of this European Standard the requirements of EN ISO 10380. End fittings and non-permanently attached parts, whether surface finished or not, shall be manufactured from stainless steel, or from copper alloys containing at least 57 % copper and up to 3,5 % lead. Where there may be risk of stress corrosion cracking, any threaded parts manufactured from the above copper alloys shall be stress relieved. 4.4 Requirements for the connection between hose and fittings The connection between the corrugated hose and the end fitting of a CMG hose assembly as defined by this European Standard shall be made by a method such as welding or brazing, resulting in an integrated non-detachable connection, which can only be detached by irreparably damaging the hose or the end fitting. The connection shall ensure leak-tightness and shall withstand all tests requested in Clause 5. Welding and brazing processes shall conform to EN 1418, EN 13134 and EN 13133. It shall be possible to withdraw swivel nuts in order to free the sealing surface. 4.5 End fittings design requirements End fittings shall be manufactured from materials that permit the CMG assembly to comply with the performance requirements of this European Standard for a reasonable economic working life when tested according to Table 1. The design of end fittings shall be in accordance with 5.19. A CMG hose assembly shall be fitted either with a swivel nut on one end and or a swivel joint. The design of swivel nuts shall ensure that when used in conjunction with its seal/gasket and its matching part tightness is achieved at a maximum torque of (10 ± 0,5) N ⋅ m and that when further tightened to an torque of (50 ± 2,5) N ⋅ m there shall be no visible deformation or cracking and the connection shall remain gas tight. Fittings used in conjunction with swivel nuts shall incorporate a means to hold the fitting during the tightening of the swivel nut without applying torsion to the hose or damage to the fitting. Where threads are used at both ends of an assembly and there is a possibility of the assembly being installed the wrong way round, the fittings shall be identified by different colours and the flow direction shall be marked by the use of an arrow. Seals/

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