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ISO 23551-4:2005/Amd.1:2010

Действует
Safety and control devices for gas burners and gasburning appliances -- Particular requirements -- Part 4: Valveproving systems for automatic shutoff valves -- Amendment 1: Application guidance for the valveproving system — 8 стр.
ICS
27.060.20 Gas fuel burners / Газовые горелки