1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 161:2011Automatic shut-off valves forgas burners and gas appliancesBS EN 161:2011+A3:2013BS EN 161:2011+A3:2013National forewordThis British Standard is the UK implementati
2、on of EN 161:2011+A3:2013. It supersedes BS EN 161:2011+A2:2012, which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment
3、A2 is indicated by #$.Please note that CEN did not issue an amendment A1 to this document. The UK participation in its preparation was entrusted to Technical Committee GSE/22, Safety and control devices for gas and oil burners and gas burning appliances.A list of organizations represented on this co
4、mmittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013. Published by BSI Standards Limited 2013ISBN 978 0 580 81979 7 ICS 23
5、.060.40Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2011. Amendments/corrigenda issued since publicationDate Text affected31 October 2012 Implementatio
6、n of CEN amendment A2:201231 May 2013 Implementation of CEN amendment A3:2013BRITISH STANDARDEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 161:2011+A3 January 2013 ICS 23.060.10 Supersedes EN 161:2011+A2:2012English Version Automatic shut-off valves for gas burners and gas appliances Robinets
7、 automatiques de sectionnement pour brleurs gaz et appareils gaz Automatische Absperrventile fr Gasbrenner und Gasgerte This European Standard was approved by CEN on 20 February 2011 and includes Amendment 2 approved by CEN on 10 June 2012 and Amendment 3 approved by CEN on 10 November 2012. CEN mem
8、bers are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on applicat
9、ion to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Manage
10、ment Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
11、 Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 B
12、russels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 161:2011+A3:2013: EEN 161:2011+A3:2013 (E) 2 Contents Page Foreword 4 1 Scope 6 2 Normative references 6 3 Terms and definitions .7 4 Classification 8 5 Units of measurem
13、ent and test conditions .9 6 Construction requirements .9 7 Performance 14 8 EMC/Electrical requirements . 22 9 Marking, installation and operating instructions 24 Annex A (informative) Gas connections in common use in the various countries . 26 Annex B (informative) Leak-tightness test volumetric m
14、ethod 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 acc
15、essories as defined in EU Directive 97/23/EC . 31 Annex G (normative) 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 AA (normati
16、ve) %Method for the determination of Performance Level (PL) b) normative references: ISO 4400 and ISO 6952 are changed to EN 175301-803; c) terms and definitions are aligned to #EN 13611:2007+A2:2011$; d) %sub-clause 6.2.105, Balanced valves, has been changed; e) sub-clause 6.2.107, Additional requi
17、rements for shut-off function, has been changed; g) %sub-clause 7.105.1, Sealing force requirements, has been changed; BS EN 161:2011+A3:2013EN 161:2011+A3:2013 (E) 5 i) %addition of new Annexes AA and BB; b) leak tightness; c) sealing force (ability to withstand backpressure, to be checked by testi
18、ng or calculation); d) closing force friction force; e) closing time including the influence to the Burner Control (EN 298); f) no uncontrolled opening of the automatic shut-off valve. As a result of this failure mode analysis, additional constructional requirements shall be fulfilled and/or additio
19、nal faults compared to #EN 13611:2007+A2:2011$, Annex E shall be included into the fault assessment. The outcome of the analysis shall provide a set of conditions under which the new design can be used in an automatic shut-off valve. These conditions involve construction requirements, safety require
20、ments, performance requirements and test methods. The fault reaction time shall be declared by the manufacturer. Failure of mechanical parts adversely affecting the performance requirements of this European Standard is considered as an abnormal situation and can therefore be considered as a first fa
21、ult according to the test method in #EN 13611:2007+A2:2011$, 6.6. BS EN 161:2011+A3:2013EN 161:2011+A3:2013 (E) 12 However, if mechanical parts are designed according to the constructional requirements of Clause 6 of this European Standard, failure of these parts is not considered. # 6.2.107 Additio
22、nal requirements for shut-off function 6.2.107.1 Diaphragms that assist the shut-off function Shut-off functions using a diaphragm to apply (part of) the closing force to the closure member shall be designed in such a way that, when the diaphragm is damaged, the closure member closes and the maximum
23、 internal leakage rate of the valve is limited to 1 dm/h. Conformity shall be verified by the method given in 6.2.107.2. 6.2.107.2 Leakage test Remove or rupture the part(s) assisting the shut-off function. De-energize the valve. Measure the internal leakage rate of the valve according to 7.3.$ 6.3
24、Materials 6.3.1 General material requirements Shall be according to #EN 13611:2007+A2:2011$, 6.3.1. 6.3.2 Housing Shall be according to #EN 13611:2007+A2:2011$, 6.3.2. 6.3.3 Test for leakage of housing after removal of non-metallic parts Shall be according to #EN 13611:2007+A2:2011$, 6.3.3. 6.3.4 Zi
25、nc alloys Shall be according to #EN 13611:2007+A2:2011$, 6.3.4. 6.3.5 Springs providing closing and/or sealing force Shall be according to #EN 13611:2007+A2:2011$, 6.3.5. 6.3.6 Resistance to corrosion and surface protection Shall be according to #EN 13611:2007+A2:2011$, 6.3.6. 6.3.7 Impregnation Sha
26、ll be according to #EN 13611:2007+A2:2011$, 6.3.7. 6.3.8 Seals for glands for moving parts Shall be according to #EN 13611:2007+A2:2011$, 6.3.8. BS EN 161:2011+A3:2013EN 161:2011+A3:2013 (E) 13 6.3.101 Closure members Closure members of valves above DN 25 shall either have a mechanical support (e. g
27、. metallic) to withstand the sealing force or shall be made of metal. This requirement also applies to: all valves with a maximum inlet pressure above 15 kPa (150 mbar); parts transmitting the closing force. The strength of the connection between closure members of a balanced valve shall be at least
28、 five multiplied by the maximum inlet pressure multiplied by the total opening area of the closure members. 6.4 Gas connections 6.4.1 Making connections Shall be according to #EN 13611:2007+A2:2011$, 6.4.1. 6.4.2 Connection sizes Shall be according to #EN 13611:2007+A2:2011$, 6.4.2. 6.4.3 Threads Sh
29、all be according to #EN 13611:2007+A2:2011$, 6.4.3. 6.4.4 Union joints Shall be according to #EN 13611:2007+A2:2011$, 6.4.4. 6.4.5 Flanges Shall be according to #EN 13611:2007+A2:2011$, 6.4.5. 6.4.6 Compression fittings Shall be according to #EN 13611:2007+A2:2011$, 6.4.6. 6.4.7 Nipples for pressure
30、 test Shall be according to #EN 13611:2007+A2:2011$, 6.4.7 with the following addition: Nipples for pressure test conforming to these requirements shall be used only up to and including 500 mbar. 6.4.8 Strainers Shall be according to #EN 13611:2007+A2:2011$, 6.4.8 with the following addition: Where
31、an inlet strainer is fitted to class A, B, C, and D valves, the maximum strainer hole dimension shall not exceed 1,5 mm and it shall prevent the passage of a 1 mm diameter pin gauge. Class J valves shall incorporate an inlet strainer. The maximum strainer hole dimension shall not exceed 0,28 mm and
32、it shall prevent the passage of a 0,2 mm diameter pin gauge. BS EN 161:2011+A3:2013EN 161:2011+A3:2013 (E) 14 Strainers fitted to valves of DN 25 and above shall be accessible for cleaning or replacement without removing the valve body by dismantling threaded or welded pipework. 6.5 Electronic parts
33、 of valves Shall be according to #EN 13611:2007+A2:2011$, 6.5. 6.6 Protection against internal faults for the purpose of functional safety Shall be according to #EN 13611:2007+A2:2011$, 6.6. 6.101 Pneumatic and hydraulic actuating mechanisms Pneumatic or hydraulic actuated valves shall be provided w
34、ith protection to ensure that the blockage of an orifice in the control system does not adversely affect the performance requirements as given in Clause 7. 7 Performance 7.1 General Shall be according to #EN 13611:2007+A2:2011$, 7.1 with the following addition: Valves shall close automatically when
35、de-energized or in the absence of actuating energy. Valves with DC supplies shall operate correctly from the minimum rated voltage to the maximum rated voltage, as declared by the manufacturer. For DC supplies type A, B, and C according to #EN 13611:2007+A2:2011$, Annex I.1 a tolerance of 20 % to th
36、e minimum and the maximum rated voltage applies. For DC supplies of other types the tolerance shall be declared by the manufacturer. The electrical control valve of pneumatic or hydraulic actuating mechanisms shall also meet these requirements. The closing of pneumatically or hydraulically actuated
37、valves shall be ensured over the range from 85 % to 110 % of the actuating pressure or pressure range declared by the manufacturer. Aspects coming from new designs for closing and/or sealing according to 6.2.106.2.2 shall be taken as part of the performance requirements, as specified in Clause 7. 7.
38、2 Leak-tightness Shall be according to #EN 13611:2007+A2:2011$, 7.2 with the following addition: Balanced valves shall be leak-tight when tested with rates given in Table 1. BS EN 161:2011+A3:2013EN 161:2011+A3:2013 (E) 15 Table 1 Test pressure Inlet pressure Test pressure p in flow direction kPa Ma
39、ximum leakage rate 0 Pa p 50 kPa 2 pmaxFor internal leak-tightness see values in #EN 13611:2007+A2:2011$, Table 2 50 kPa 15 kPa 50 000 150 000 DN 25 Opening time 1 s 50 000 150 000 25 DN 80 25 000 75 000 80 DN 150 25 000 25 000 150 DN 250 5 000 20 000 Table 4 Operating cycles for automatic shut-off
40、valves for cookers according to EN 30-1-4:2002, 5.3.7.1 Nominal inlet size DN Number of cycles at: Maximum ambient temperature at least (60 5) C (20 5) C DN 25 Opening time 1 s maximum inlet pressure 15 kPa 800 000 200 000 7.107.3 Endurance test for closed position indicator switch Carry out the end
41、urance test described in 7.107.2 on an unmodified valve with the maximum inductive or capacitive load declared by the manufacturer on the closed position indicator switch. During the test, monitor the switch to ensure that it indicates that the valve is closed when it is de-energized and open when e
42、nergized. After the endurance test, carry out the test for indication of closure according to 7.106.2. 7.107.4 Flow characteristics 7.107.4.1 Valves with modulating control In addition to 7.107.2, test the valve for opening to the lowest set point as declared by the manufacturer and to the mid-point
43、 in the closing direction according to 7.7.2. BS EN 161:2011+A3:2013EN 161:2011+A3:2013 (E) 22 7.107.4.2 Valves with step control In addition to 7.107.2, test the valve for opening and/or closing to the mid-point of the adjustment range for each step according to 7.7.2. 8 EMC/Electrical requirements
44、 8.1 Protection against environmental influences Shall be according to #EN 13611:2007+A2:2011$, 8.1. 8.2 Supply voltage variations below 85 % of rated voltage #EN 13611:2007+A2:2011$, 8.2 is not applicable. 8.3 Short term voltage interruptions and decreases Shall be according to #EN 13611:2007+A2:20
45、11$, 8.3 with the following addition: Determine the influence of supply voltage interruptions by monitoring any change of flow through the valve at a pressure difference at the valve declared by the manufacturer. 8.4 Supply frequency variations Shall be according to #EN 13611:2007+A2:2011$, 8.4. 8.5
46、 Surge immunity test Shall be according to #EN 13611:2007+A2:2011$, 8.5. 8.6 Electrical fast transient/burst Shall be according to #EN 13611:2007+A2:2011$, 8.6. 8.7 Immunity to conducted disturbances Shall be according to #EN 13611:2007+A2:2011$, 8.7. 8.8 Immunity to radiated fields Shall be accordi
47、ng to #EN 13611:2007+A2:2011$, 8.8. 8.9 Electrostatic discharge immunity test Shall be according to #EN 13611:2007+A2:2011$, 8.9. 8.10 Power frequency magnetic field immunity test Shall be according to #EN 13611:2007+A2:2011$, 8.10. 8.11 Electrical requirements Shall be according to #EN 13611:2007+A
48、2:2011$, 8.11 with the following addition: BS EN 161:2011+A3:2013EN 161:2011+A3:2013 (E) 23 8.11.101 General Electrical equipment shall either be type tested or declared by the manufacturer. Electrical equipment shall also comply with the relevant requirements of EN 60730-1:2000, Clauses 14 and 20.
49、The test to Clause 13 of EN 60730-1:2000 shall be carried out after the humidity test according to #EN 13611:2007+A2:2011$, 7.8.7. 8.11.102 Electrical equipment 8.11.102.1 Degree of protection The degree of protection shall be declared by the manufacturer in accordance with EN 60529. 8.11.102.2 Switches Switches shall conform to EN 61058-1. The number of operating cycles shall be in accordance with Table 3 of this European Standard. 8.11.102.3 Plug connections Valves supplied with an assembled electrical plug connector in accordance wi
