
Valve Proving Systems for Automatic Shut-off Valves for gas Burners and gas Appliances
出版:National Standards Authority of Ireland

专家解读视频
Covers the safety, constructional and performance requirements for valve proving systems, hereafter referred to as VPS, for gas burners and gas appliances.
NEN EN 1643:2000 - Identical
UNI EN 1643:2003 - Identical
NBN EN 1643:2000 - Identical
UNE EN 1643:2001 - Identical
NF EN 1643:2001 - Identical