BS EN 161:2011+A3:2013
$198.66
Automatic shut-off valves for gas burners and gas appliances
| Published By | Publication Date | Number of Pages |
| BSI | 2013 | 62 |
This European Standard 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 European Standard 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 European Standard 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 European Standard.
This European Standard 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 European Standard 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 European standard establishes methodologies for the determination of a Performance Level (PL) in accordance with EN 13611:2007+A2:2011, Annexes K and L.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | Contents Page |
| 6 | Foreword |
| 8 | 1 Scope 2 Normative references |
| 9 | 3 Terms and definitions |
| 10 | 4 Classification 4.1 Classes of control 4.2 Groups of control |
| 11 | 4.3 Classes of control functions 5 Units of measurement and test conditions 6 Construction requirements 6.1 General 6.2 Mechanical parts of the control 6.2.1 Appearance 6.2.2 Holes 6.2.3 Breather holes 6.2.4 Test for leakage of breather holes 6.2.5 Screwed fastenings 6.2.6 Jointing 6.2.7 Moving parts 6.2.8 Sealing caps 6.2.9 Dismantling and reassembly |
| 12 | 6.2.101 Design 6.2.102 Closed position indicator switch 6.2.103 Valve with modulating control 6.2.104 Controls assembled to a valve 6.2.105 Balanced valves 6.2.106 Closing and sealing 6.2.106.1 Closing and/or sealing by means of springs 6.2.106.2 Other means for closing and/or sealing 6.2.106.2.1 General |
| 13 | 6.2.106.2.2 New designs for closing and/or sealing |
| 14 | 6.3 Materials 6.3.1 General material requirements 6.3.2 Housing 6.3.3 Test for leakage of housing after removal of non-metallic parts 6.3.4 Zinc alloys 6.3.5 Springs providing closing and/or sealing force 6.3.6 Resistance to corrosion and surface protection 6.3.7 Impregnation 6.3.8 Seals for glands for moving parts |
| 15 | 6.3.101 Closure members 6.4 Gas connections 6.4.1 Making connections 6.4.2 Connection sizes 6.4.3 Threads 6.4.4 Union joints 6.4.5 Flanges 6.4.6 Compression fittings 6.4.7 Nipples for pressure test 6.4.8 Strainers |
| 16 | 6.5 Electronic parts of valves 6.6 Protection against internal faults for the purpose of functional safety 6.101 Pneumatic and hydraulic actuating mechanisms 7 Performance 7.1 General 7.2 Leak-tightness |
| 17 | 7.3 Test for leak-tightness 7.3.1 General 7.3.2 External leak-tightness 7.3.3 Internal leak-tightness 7.4 Torsion and bending 7.5 Torsion and bending tests 7.6 Rated flow rate 7.6.101 Valves with modulating control 7.6.102 Valves with step control |
| 18 | 7.6.103 Valves with electrical control 7.7 Test for rated flow rate 7.7.1 Apparatus 7.7.2 Test procedure 7.7.3 Conversion of air flow rate 7.8 Durability 7.9 Performance test for electronic controls 7.10 Long-term performance for electronic controls 7.101 Closing function concerning remanence 7.101.1 Requirement 7.101.2 Test of closing function |
| 19 | 7.102 Closing force 7.102.1 Requirement 7.102.2 Test of closing force 7.103 Delay time and opening time 7.103.1 Requirement 7.103.2 Test of delay time and opening time |
| 20 | 7.104 Closing time 7.104.1 Requirement 7.104.2 Test of closing time 7.105 Sealing force 7.105.1 Requirement |
| 21 | 7.105.2 Test of sealing force 7.106 Closed position indicator switch 7.106.1 Requirement |
| 22 | 7.106.2 Test of closed position indicator switch 7.107 Endurance 7.107.1 Requirement 7.107.2 Endurance test |
| 23 | 7.107.3 Endurance test for closed position indicator switch 7.107.4 Flow characteristics |
| 24 | 8 EMC/Electrical requirements 8.1 Protection against environmental influences 8.2 Supply voltage variations below 85 % of rated voltage 8.3 Short term voltage interruptions and decreases 8.4 Supply frequency variations 8.5 Surge immunity test 8.6 Electrical fast transient/burst 8.7 Immunity to conducted disturbances 8.8 Immunity to radiated fields 8.9 Electrostatic discharge immunity test 8.10 Power frequency magnetic field immunity test 8.11 Electrical requirements |
| 25 | 8.11.101 General 8.11.102 Electrical equipment |
| 26 | 9 Marking, installation and operating instructions 9.1 Marking |
| 27 | 9.2 Installation and operating instructions 9.3 Warning notice |
| 28 | Annex A (informative)Gas connections in common use in the various countries |
| 29 | Annex B (informative)Leak-tightness test – volumetric method |
| 30 | Annex C (informative)Leak-tightness test – pressure loss method |
| 31 | Annex D (normative)Conversion of pressure loss into leakage rate |
| 32 | Annex E (normative)Electrical/electronic component fault modes |
| 33 | Annex F (normative)Additional requirements for safety accessories and pressure accessories as defined in EU Directive 97/23/EC |
| 34 | Annex G (normative)Materials for pressurized parts |
| 35 | Annex H (informative)Additional materials for pressurized parts |
| 36 | Annex I (normative)Requirements for controls used in DC supplied gas burners and gas burning appliances |
| 37 | Annex AA(normative)%Method for the determination of Performance Level (PL) AA.1 Scope AA.2 Normative references AA.3 Terms and definitions AA.4 Performance AA.4.1 Operation mode AA.4.2 PL and field data evaluation AA.4.3 Hardware failure tolerance (HFT) |
| 38 | AA.4.4 Common cause failure (CCF) AA.4.5 Safe failure fraction (SFF) AA.4.6 Determination of the B10d value AA.4.6.1 Requirement |
| 39 | AA.4.6.2 Test AA.4.7 Determination of performance level (PL) AA.5 Marking, installation and operating instructions AA.5.1 Marking AA.5.2 Installation and operating instructions AA.5.3 AWarning notice |
| 40 | Annex BB(informative)Model of a FMEA for valves |
| 57 | Annex ZA (informative)Relationship between this European Standard and the Essential Requirements of EU Directive 2009/142/EC relating to appliances burning gaseous fuels |
| 59 | Bibliography |
