I.S. EN ISO 4126-4:2013现行
Safety Devices for Protection Against Excessive Pressure Part 4: Pilot-operated Safety Valves (iso 4126-4:2013)
出版：National Standards Authority of Ireland
专家解读视频
Defines general requirements for pilot operated safety valves, irrespective of the fluid for which they are designed.
NS EN ISO 4126-4:2013 - Identical
NBN EN ISO 4126-4:2013 - Identical
SN EN ISO 4126-4:2013 - Identical
UNE EN ISO 4126-4:2004 - Identical
ONORM EN ISO 4126-4:2013 - Identical
SS EN ISO 4126-4 Ed. 2 (2013) - Identical
UNE EN ISO 4126-4:2014 - Identical
NF EN ISO 4126-4:2013 - Identical
NEN EN ISO 4126-4:2013 - Identical
