ISO 23551-4:2005被替代
Safety and control devices for gas burners and gas-burning appliances - Particular requirements Part 4: Valve-proving systems for automatic shut-off valves
出版：International Organization for Standardization
專家解讀視頻
Describes safety, constructional and performance requirements of valve-proving systems (VPS), intended for use with gas burners and gas-burning appliances.
KS B ISO 23551-4:2012 - Identical
KS B ISO 23551-4:2008 - Identical
NEN ISO 23551-4:2005 - Identical
NEN ISO 23551-4 : 2005 AMD 1 2010 - Identical
