Historical

DS/EN 331/A1:2011

Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings

Replace the second paragraph of clause 1.1 with the following:*It applies to metallic valves for domestic and commercial not directly buried installations inside or outside of buildings, using gases of the first, second and third family (specified in EN 437) and working up to 0,2 105 Pa, 0,5 105 Pa and 5 105 Pa.

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Danish Standards [ds]

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