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BS EN 161:2022

BS EN 161:2022

$215.11

Automatic shut-off valves for gas burners and gas appliances

Published By Publication Date Number of Pages
BSI 2022 72
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EN 13611:2019, Clause 1 applies with the following modification and addition: Modification: The 1st paragraph of EN 13611:2019, Clause 1 is replaced 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. The 4th paragraph of EN 13611:2019, Clause 1 is removed.

PDF Catalog

PDF Pages PDF Title
2 undefined
12 1 Scope
2 Normative references
13 3 Terms and definitions
15 4 Classification
4.1 Classes of control
4.2 Groups of control
4.3 Classes of control functions
4.4 Types of DC supplied controls
5 Test conditions and uncertainty of measurements
6 Design and construction
6.1 General
6.2 Mechanical parts of the control
6.2.1 Appearance
6.2.2 Holes
6.2.3 Breather holes
16 6.2.4 Screwed fastenings
6.2.5 Jointing
6.2.6 Moving parts
6.2.7 Sealing caps
6.2.8 Dismantling and reassembly
6.2.9 Auxiliary canals and orifices
6.2.10 Presetting device
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
17 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
18 6.2.107 Additional requirements for shut-off function
6.2.107.1 Diaphragms that assist the shut-off function
6.2.107.2 Leakage test
6.3 Materials
6.3.1 General material requirements
6.3.2 Housing
6.3.3 Zinc alloys
6.3.4 Springs
6.3.5 Resistance to corrosion and surface protection
6.3.6 Impregnation
6.3.7 Seals for glands for moving parts
19 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
6.5 Electrical parts of the control
6.5.1 General
6.5.2 Switching elements
20 6.5.3 Electrical components
6.5.3.1 Performance of electrical components
6.5.3.2 Tests
6.5.3.3 Sensing element
6.5.3.4 Gas controls employing electrical components in the gas circuit
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
7.3 Torsion and bending
21 7.4 Rated flow rate
7.4.1 Requirement
7.4.1.101 Valves with modulating control
7.4.1.102 Valves with step control
7.4.1.103 Valves with electrical control
7.4.2 Test
7.4.3 Conversion of air flow rate
7.5 Durability
7.6 Performance tests for electronic controls
7.7 Long-term performance for electronic controls
7.8 Data exchange
7.101 Closing function
7.101.1 Requirement
22 7.101.2 Test of closing function
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
23 7.103.2 Test of delay time and opening time
7.104 Closing time
7.104.1 Requirement
7.104.1.1 Closing time for safety shut-down
7.104.1.2 Closing time for controlling function
7.104.2 Test of closing time
7.105 Sealing force
7.105.1 Requirement
24 7.105.2 Test of sealing force
7.105.2.1 Class A, B, C, and balanced valves
7.105.2.2 Class J valve
25 7.106 Closed position indicator switch
7.106.1 Requirement
7.106.2 Test of closed position indicator switch
7.107 Endurance
7.107.1 Requirement
7.107.2 Endurance test
26 7.107.3 Endurance test for closed position indicator switch
27 7.107.4 Flow characteristics
7.107.4.1 Valves with modulating control
7.107.4.2 Valves with step control
8 Electrical requirements
8.1 General
8.2 Protection by enclosure
8.101 Switches
8.102 Plug connections
28 8.103 Power saving circuits
8.103.1 Closing of the valve
8.103.2 Overheating
8.103.3 Test of power-saving circuits
9 Electromagnetic compatibility (EMC)
9.1 Protection against environmental influences
9.2 Supply voltage variations below 85 % of rated voltage
9.3 Voltage dips and interruptions
9.3.101.1 Requirements
9.3.101.2 Test
29 9.4 Supply frequency variations
9.5 Surge immunity tests
9.6 Electrical fast transient/burst
9.7 Immunity to conducted disturbances induced by radio frequency fields
9.8 Immunity to radiated disturbances induced by radio frequency fields
9.9 Electrostatic discharge tests
9.10 Power frequency magnetic field immunity tests
9.11 Harmonics and interharmonics including mains signalling at a. c. power port, low frequency immunity tests
10 Marking, instructions
10.1 Marking
30 10.2 Instructions
31 10.3 Warning notice
32 Annex A (informative)Abbreviations and symbols
33 Annex B (informative)Leak-tightness test for gas controls – volumetric method
34 Annex C (informative)Leak-tightness test for gas controls – pressure loss method
35 Annex D (normative)Calculation of pressure loss into leakage rate
36 Annex E (normative)Electrical/electronic component fault modes
37 Annex F (normative)Additional requirements for safety accessories and pressure accessories as defined in EU Directive 2014/68/EU
38 Annex G (normative)Materials for pressurized parts
39 Annex H (normative)Additional materials for pressurized parts
40 Annex I (normative)Requirements for controls used in DC supplied burners and appliances burning gaseous or liquid fuels
41 Annex J (normative)Method for the determination of a Safety Integrity Level (SIL)
42 Annex K (normative)Method for the determination of a Performance Level (PL)
K.1 Scope
K.2 Normative references
K.3 Terms and definitions
K.4 Performance
K.4.1 Operation mode
K.4.2 PL and field data evaluation
K.4.3 Hardware failure tolerance (HFT)
K.4.4 Common cause failure (CCF)
K.4.4.1 General
K.4.4.2 Estimation of effect of CCF
43 K.4.5 Safe failure fraction (SFF)
K.4.6 Determination of the B10d value
K.4.6.1 Requirements
K.4.6.2 Tests
44 K.4.7 Determination of Performance Level (PL)
K.4.8 PFHD values for structures consisting of two controls
K.5 Marking, instructions
K.5.1 Marking
K.5.2 Instructions
K.5.3 Warning notice
45 Annex L (informative)Relationship between Safety Integrity Level (SIL) andPerformance Level (PL)
46 Annex M (normative)Reset functions
47 Annex N (informative)Guidance document on Environmental Aspects
48 Annex O (normative)Seals of elastomer, cork and synthetic fibre mixtures
49 Annex AA(informative)Model of a FMEA for valves
67 Annex ZA(informative)Relationship between this European Standard and the essential requirements of Regulation (EU) 2016/426 aimed to be covered

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BS EN 161:2022
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