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EVS-EN ISO 4126-7:2013

Safety devices for protection against excessive pressure - Part 7: Common data (ISO 4126-7:2013)

General information
Valid from 09.09.2013
Base Documents
ISO 4126-7:2013; EN ISO 4126-7:2013
Directives or regulations
2014/68/EU Pressure equipment (PED)
Standard history
Status
Date
Type
Name
03.08.2016
Amendment
09.09.2013
Main
05.12.2008
Corrigendum
This part of ISO 4126 specifies requirements for safety valves. It contains information which is common to ISO 4126-1 to ISO 4126-6 to avoid unnecessary repetition. For flashing liquids or two-phase mixtures, see ISO 4126-10. The user is cautioned that it is not recommended to use the ideal gas formula presented in 6.3 when the relieving temperature is greater than 90 % of the thermodynamic critical temperature and the relieving pressure is greater than 50 % of the thermodynamic critical pressure. Additionally, condensation is not considered. If condensation occurs, the method presented in 6.3 should not be used.
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