BS ISO 4437-4:2022 – TC

$186.33

Tracked Changes. Plastics piping systems for the supply of gaseous fuels. Polyethylene (PE) – Valves

Published By	Publication Date	Number of Pages
BSI	2022	70

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PDF Catalog

PDF Pages	PDF Title
1	30466577
41	A-30431934
42	National foreword
47	Foreword
48	Introduction
49	1 Scope 2 Normative references
50	3 Terms and definitions 3.1 General
51	3.2 Terms relating to design 4 Symbols and abbreviations 5 Material 5.1 Material for polyethylene parts
52	5.2 Material for non-polyethylene parts 5.2.1 General 5.2.2 Metal parts 5.2.3 Sealing materials 5.2.4 Greases and lubricants 5.2.5 Assembly
53	6 General characteristics 6.1 Appearance of the valve 6.2 Colour 6.3 Design 6.3.1 General 6.3.2 Valve body 6.3.3 Valve ends 6.3.4 Operating device 6.3.5 Seals 7 Geometrical characteristics 7.1 General
54	7.2 Measurement of dimensions 7.3 Dimensions of spigot ends for valves 7.4 Dimensions of valves with electrofusion sockets 7.5 Dimensions of the operating device 8 Mechanical characteristics of assembled valves 8.1 General 8.2 Requirements 8.2.1 General
61	8.2.2 Air flow rate 9 Physical characteristics 9.1 Conditioning
62	9.2 Requirements 10 Performance requirements 11 Technical file
63	12 Marking 12.1 General 12.2 Minimum required marking 12.3 Additional marking
64	13 Delivery conditions
65	Annex A (normative) Determination of the leaktightness of seat(s) and packing
67	Annex B (normative) Test method for leaktightness and ease of operation after tensile loading
69	Bibliography