EN 13953:2015

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Operating Conditions
5 Materials
6 Design
7 Type Testing and inspection of the design
8 Test records
9 Production testing
10 Marking
11 Documentation
Annex A (informative) - Terms used with pressure
        relief valves
Annex B (normative) - Special low temperature
        requirements for valves
Annex C (normative) - Sizing of PRVs for LPG cylinders
Annex D (informative) - Production testing
Bibliography

This European Standard specifies the design, testing and marking requirements for spring loaded pressure relief valves (PRV), for use in liquefied petroleum gas (LPG) cylinders.These PRVs can be either an integral part of a cylinder valve (see EN ISO 14245 [3] and EN ISO 15995 [4]) or a separate device.This European Standard does not exclude the use of other designs of pressure relief devices that provide a similar level of safety.