
Safety devices for protection against excessive pressure Part 4: Pilot operated safety valves
出版:International Organization for Standardization

專家解讀視頻
Provides general requirements for pilot operated safety valves, irrespective of the fluid for which they are designed.
PN EN ISO 4126-4 : 2013 - Identical
DS EN ISO 4126-4 : 2013 - Identical
KS B ISO 4126-4:2015 - Identical