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BSI 23/30451331 DC:2023 Edition

BSI 23/30451331 DC:2023 Edition

$13.70

BS ISO 23551-11. Safety and control devices for gas burners and gas-burning appliances. Particular requirements – Part 11. Automatic and semi-automatic shut-off valves for operating pressure of above 500 kPa up to and including 6 300 kPa

Published By Publication Date Number of Pages
BSI 2023 54
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PDF Catalog

PDF Pages PDF Title
1 30451331-NC.pdf
3 ISO_DIS 23551-11 ed.1 – id.83848 Enquiry PDF (en) (1).pdf
8 Foreword
9 Introduction
11 1 Scope
2 Normative references
12 3 Terms and definitions
13 4 Classification
4.1 Classes of controls
4.1.1 Classification based on sealing force
4.1.2 Classifications based on pressure surge
4.1.3 Classification with neither sealing force nor pressure surge
4.1.4 Classification of flow control valves for general purpose
4.2 Groups of controls
4.3 Types of DC supplied controls
4.4 Classes of control function
14 5 Test conditions and tolerances
5.1 Test conditions
5.2 Tolerances
6 Construction
6.1 General
16 6.2 Construction requirements
6.2.1 Appearance
6.2.2 Holes
6.2.3 Breather holes
6.2.4 Vent limiter
6.2.5 Screwed fastenings
6.2.6 Moving parts
17 6.2.7 Sealing caps
6.2.8 Disassembling and assembling for servicing and/or adjustment for controls
18 6.2.9 Auxiliary channels and orifices
6.2.10 Pre-setting device
19 6.2.11 Closed position indication
20 6.2.12 Flow rates of valves with modulating control
6.2.13 Other controls assembled to a valve
21 6.2.14 Balanced valves
6.2.15 Specific construction
6.2.16 Bypass
22 6.2.17 Semi-automatic shut-off valve
6.3 Materials
6.3.1 General material requirements
6.3.2 Housing
23 6.3.3 Springs providing closing force and sealing force
24 6.3.4 Resistance to corrosion and surface protection
6.3.5 Impregnation
6.3.6 Seals for glands for moving parts
6.3.7 Jointing
6.3.8 Closure members
6.3.9 Parts transmitting the closing force
25 6.3.10 Balanced valves
6.3.11 Bellows
6.3.12 Resistance to pressure
26 6.4 Connections
6.4.1 General
6.4.2 Connection sizes
6.4.3 Connections types
6.4.4 Threads
27 6.4.5 Union joints
6.4.6 Flanges
6.4.7 Compression fittings
28 6.4.8 Flare connections
6.4.9 Nipples for pressure tests
6.4.10 Strainers
6.4.11 Gas connections by GQC
6.4.12 Welded connections
29 6.5 Gas controls employing electrical components in the gas way
6.6 Pneumatic and hydraulic actuating mechanisms
7 Performance
7.1 General
30 7.2 Leak-tightness
7.2.1 General
7.2.2 Requirements
7.2.3 Test
31 7.2.4 Pressure surge test
7.3 Torsion and bending
7.3.1 General
32 7.3.2 Torsion
7.3.3 Bending moment
7.3.4 Torsion and bending tests
7.4 Rated flow rate
7.4.1 General
7.4.2 Requirements
7.4.3 Test
33 7.5 Durability
7.6 Functional requirements
7.6.1 Closing function
34 7.6.2 Closing force
7.6.3 Delay time and opening time
35 7.6.4 Closing time
7.6.5 Sealing force
36 7.7 Endurance
7.7.1 Requirement
37 7.7.2 Test
39 7.8 Vibration
8 Electrical requirements
8.1 General
8.2 Requirements
8.3 Test
8.4 Protection by enclosure
40 8.5 Electrical strength for valves
8.6 Heating
8.6.1 General
8.6.2 Test conditions
8.6.3 Burnout test
41 8.7 Electrical components
8.7.1 Switches
8.7.2 Plug connector
8.7.3 Power saving circuit
42 9 Electromagnetic compatibility (EMC)
9.1 Protection against environmental influences
9.2 Harmonics and interharmonics including mains signalling at a.c. power port, low frequency immunity
9.3 Voltage dips, voltage interruptions and voltage variations in the power supply network
9.4 Test of influence of voltage unbalance
9.5 Surge immunity tests
9.6 Electrical fast transient/burst
43 9.7 Ring wave immunity
9.8 Electrostatic discharge
9.9 Radio-frequency electromagnetic field immunity
9.10 Influence of supply frequency variations
9.11 Power frequency magnetic field immunity
9.12 Evaluation of compliance
10 Marking, installation and operating instructions
10.1 Marking
44 10.2 Installation and operating instructions
10.3 Warning notice
45 Annexā‚¬A (informative) Leak-tightness test ā€” Volumetric method
46 Annexā‚¬B (informative) Leak-tightness test ā€” Pressure-loss method
47 Annexā‚¬C (normative) Conversion of pressure loss into leakage rate
48 Annexā‚¬D (normative) Gas quick connector (GQC)
49 Annexā‚¬E (normative) Elastomers/requirements resistance to lubricants and gas
50 Annexā‚¬F (normative) Specific regional requirements in European countries
51 Annexā‚¬G (normative) Specific regional requirements in Canada and USA
52 Annexā‚¬H (normative) Specific regional requirements in Japan
53 Annexā‚¬I (normative) Specific regional requirements in China
54 Bibliography

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