This document specifies the requirements for design, specification, type testing and production testing and inspection for dedicated LPG self-closing cylinder valves for use with and directly connected to transportable refillable LPG cylinders. It also includes requirements for associated equipment for vapour and liquid service. Bursting discs and/or fusible plugs are not covered in this document. Annex A identifies requirements for production testing and inspection. This document excludes other LPG cylinder devices which are not an integral part of the dedicated self-closing cylinder valve. This document does not apply to cylinder valves for fixed automotive installations and ball valves. NOTE For manually operated LPG cylinder valves see ISO 15995. For cylinder valves for compressed, dissolved and other liquefied gases see ISO 10297, ISO 17871 or ISO 17879.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Design and specification
4.1 General
4.2 Materials
4.3 Essential components
4.4 Optional components
4.5 Leak tightness
5 Valve type test
5.1 General
5.2 Test samples
5.3 Test procedure and test requirements
5.4 Inspection
5.5 Hydraulic pressure test
5.6 External and internal leak tightness tests
5.7 Operation test
5.8 Valve stem test
5.9 Impact test
5.10 Endurance test — Part 1
5.11 Endurance test — Part 2
5.12 Simulated vacuum test
5.13 Examination of dismantled valves
5.14 Excess flow valve test
5.15 Non-return valve test
5.16 Vibration test
6 Documentation and test report
6.1 Documentation
6.2 Test report
7 Production testing
8 Markings
Annex A Production testing and inspection (normative)
Annex B Special low temperature requirements (normative)
ISO 10286:2015 Gas cylinders — Terminology
ISO 11114-1:2020 Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 1: Metallic materials
ISO 11114-2:2013 Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 2: Non-metallic materials
ISO 10286:2015 Gas cylinders — Terminology
ISO 11114-1:2020 Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 1: Metallic materials
ISO 11114-2:2013 Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 2: Non-metallic materials
ISO 13341:2010 Gas cylinders — Fitting of valves to gas cylinders
ISO 2859-1:1999 Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection