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BS ISO 23551-5:2023 – TC

$217.84

Tracked Changes. 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 93
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PDF Catalog

PDF Pages PDF Title
52 National foreword
57 Foreword
58 Introduction
59 1 Scope
2 Normative references
3 Terms and definitions
61 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
62 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
63 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
64 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
65 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
66 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
67 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
68 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
70 7.6.2 Test for operating torque
7.6.3 Requirements for operating force
7.6.4 Requirements for operating torque for safety lock
71 7.6.5 Adequacy of seating means
7.7 Endurance
7.7.1 Requirement
7.7.2 Endurance test
72 7.7.3 Gas burner valves
73 7.7.4 Food service equipment delta C manual gas valves
8 Electrical equipment
9 EMC/Electrical requirements
74 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
75 10.1.4 Marking for appliance connector valves
10.2 Installation and operating instructions
10.3 Warning notice
76 Annex A (informative) Leak-tightness test — Volumetric method
77 Annex B (informative) Leak-tightness test — Pressure-loss method
78 Annex C (normative) Conversion of pressure loss into leakage rate
79 Annex D (normative) Gas quick connector (GQC)
80 Annex E (normative) Elastomers/requirements resistance to lubricants and gas
81 Annex F (normative) Specific regional requirements in European countries
82 Annex G (normative) Specific regional requirements in Canada and USA
84 Annex H (normative) Specific regional requirements in Japan
85 Annex I (informative) Examples of manual gas shut-off valves
91 Bibliography
BS ISO 23551-5:2023 - TC
$217.84