SNV - SN EN 331/A1
Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings; Amendment A1
| Organization: | SNV |
| Publication Date: | 1 April 2011 |
| Status: | inactive |
| Page Count: | 32 |
| ICS Code (Ball and plug valves): | 23.060.20 |
scope:
Modification to the Scope
Replace the second paragraph of 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."
NOTE "Not directly buried" within the context of this standard means that valves below ground are not in direct contact with earth or other materials e.g. that they are in a protected encasement.
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