BS EN 849:1997
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Transportable gas cylinders. Cylinder valves. Specification and type testing
Hardcopy , PDF
03-31-2006
English
01-14-2002
Foreword
Introduction
1 Scope
2 Normative references
3 Definitions and symbols
4 Valve requirements
5 Prototype valve test
6 Marking
7 Test report
Annex A (normative) Valve impact test
Annex B (informative) Example of test sequence
Annex C (normative) Endurance test
Figure 1 - External tightness
Figure 2 - Internal tightness
Figure 3 - Maximum dimensions for gas cylinder valves,
protected by a cap
Figure 4 - Example of an ignition test installation
Figure 5 - Pressure cycle specification
Figure 6 - Example of acetylene flashback test apparatus
Figure A.1 - Impact test
Figure C.1 - Typical arrangement of computer controlled equipment
Figure C.2 - Diagram showing a typical cycle for endurance test
Table 1 - Sequence of tests (tightness, endurance and fire
resistance) for type approval (no variants)
Table 2 - Test procedures for tightness tests
Table 3 - Test sequence
Important note : All end users must be registered with an Account prior to user licenses being assigned.Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.