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BS ISO 23551-5:2023

BS ISO 23551-5:2023

$167.15

Safety and control devices for gas burners and gas-burning appliances. Particular requirements – Manual gas valves

Published By Publication Date Number of Pages
BSI 2023 42
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PDF Catalog

PDF Pages PDF Title
2 National foreword
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
11 4 Classification
4.1 Classes of controls
4.2 Groups of controls
4.3 Types of DC supplied controls
4.4 Classes of controls functions
5 Test conditions and tolerances
6 Construction
6.1 General
6.2 Construction requirements
6.2.1 Appearance
6.2.2 Holes
6.2.3 Breather holes
6.2.4 Vent limiter
12 6.2.5 Screwed fastenings
6.2.6 Moving parts
6.2.7 Sealing caps
6.2.8 Dismantling and reassembling for servicing and/or adjustment
6.2.9 Auxiliary channels and orifices
6.2.10 Pre-setting device
6.2.11 Operating parts of manual gas valves
6.2.12 Seating force
6.2.13 Tapered plug cavity
13 6.3 Materials
6.3.1 General material requirements
6.3.2 Housing
6.3.3 Springs providing closing force and sealing force
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
14 6.3.8 Closure members
6.4 Connections
6.5 Gas controls employing electrical components in the gas way
6.6 Component parts
6.6.1 General
6.6.2 Turning angles
15 6.6.3 Lubrication
6.6.4 Stops
6.6.5 Safety lock
6.6.6 Bearing seal
6.6.7 Pre-setting devices
6.6.8 Compensation means for manual gas valves
16 6.6.9 Spring effect in manual gas valves
6.6.10 Manual gas valves with two or more “on” positions
6.7 Appliance connector valves
17 7 Performance
7.1 General
7.2 Leak-tightness
7.3 Torsion and bending
7.4 Rated flow rate
7.4.1 General
7.4.2 Requirements
7.4.3 Test
7.5 Durability
7.5.1 Elastomers in contact with gas
7.5.2 Resistance of elastomers to lubricants and gases
18 7.5.3 Marking resistance
7.5.4 Resistance to scratching
7.5.5 Resistance to humidity
7.6 Functional requirements
7.6.1 Requirements for operating torque
20 7.6.2 Test for operating torque
7.6.3 Requirements for operating force
7.6.4 Requirements for operating torque for safety lock
21 7.6.5 Adequacy of seating means
7.7 Endurance
7.7.1 Requirement
7.7.2 Endurance test
22 7.7.3 Gas burner valves
23 7.7.4 Food service equipment delta C manual gas valves
8 Electrical equipment
9 EMC/Electrical requirements
24 10 Marking, installation and operating instructions
10.1 Marking
10.1.1 Open and closed position of a manual gas valve
10.1.2 Marking of positions
10.1.3 Marking for delta C valves
25 10.1.4 Marking for appliance connector valves
10.2 Installation and operating instructions
10.3 Warning notice
26 Annex A (informative) Leak-tightness test — Volumetric method
27 Annex B (informative) Leak-tightness test — Pressure-loss method
28 Annex C (normative) Conversion of pressure loss into leakage rate
29 Annex D (normative) Gas quick connector (GQC)
30 Annex E (normative) Elastomers/requirements resistance to lubricants and gas
31 Annex F (normative) Specific regional requirements in European countries
32 Annex G (normative) Specific regional requirements in Canada and USA
34 Annex H (normative) Specific regional requirements in Japan
35 Annex I (informative) Examples of manual gas shut-off valves
41 Bibliography

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BS ISO 23551-5:2023
$167.15