This European Standard specifies the requirements for steel gate valves which are wrough, cast or fabricated with end connections flanged, butt welding, butt welding ,socket welding or threaded.
DIN EN 1984:2010 history
2010DIN EN 1984:2010-10 Industrial valves - Steel gate valves; German version EN 1984:2010
2010DIN EN 1984:2010 Industrial valves - Steel gate valves; German version EN 1984:2010
2000DIN EN 1984:2000 Industrial valves - Steel gate valves; German version EN 1984:2000
1980DIN 3352-8:1980 Low temperature steel gate valves with outside screwed stem