NS EN ISO 4126-4:2013現行
Safety Devices For Protection Against Excessive Pressure - Part 4: Pilot-Operated Safety Valves (Iso 4126-4:2013)
出版：Norwegian Standards (Norges Standardiseringsforbund)
專家解讀視頻
Defines general requirements for pilot operated safety valves, other than those covered in Part 1, irrespective of the fluid for which they are designed.
SS EN ISO 4126-4 Ed. 2 (2013) - Identical
NF EN ISO 4126-4:2013 - Identical
UNE EN ISO 4126-4:2014 - Identical
SN EN ISO 4126-4:2013 - Identical
UNE EN ISO 4126-4:2004 - Identical
SN EN ISO 4126-4:2004 - Identical
DIN EN ISO 4126-4 (2004-05) - Identical
ONORM EN ISO 4126-4:2013 - Identical
UNI EN ISO 4126-4:2013 - Identical
NBN EN ISO 4126-4:2013 - Identical
NEN EN ISO 4126-4:2013 - Identical
BS EN ISO 4126-4:2013 - Identical
I.S. EN ISO 4126-4:2013 - Identical
