NF C52-216-5/A2*NF EN 50216-5/A2:2005 Power transformer and reactor fittings - Part 5 : liquid level, pressure and flow indicators, pressure relief devices and dehydrating breathers.
2005NF C52-216-5/A2*NF EN 50216-5/A2:2005 Power transformer and reactor fittings - Part 5 : liquid level, pressure and flow indicators, pressure relief devices and dehydrating breathers.