This part of this European Standard specifies the requirements for Controlled Safety Pressure Relief Systems irrespective of the fluid for which they are designed. It is applicable for main valves having a flow diameter of 6 mm and above which are for use
DS/EN ISO 4126-5:2013 history
2013DS/EN ISO 4126-5:2013 Safety devices for protection against excessive pressure - Part 5: Controlled safety pressure relief systems (CSPRS)
0000 DS/EN ISO 4126-5/AC:2008
0000 DS/EN ISO 4126-5:2004
1996DS/ETS 300399-3:1996 Frame relay services - Part 3: Frame relay data transmission service - Service definition