This part of this European Standard applies to non-return valves used in conjunction with faecal and faecal-free wastewater lifting plants. This part of the standard contains general requirements, basic construction and testing principles together with information on materials and conformity evaluation.
DS/EN 12050-4-2001由丹麦标准化协会 DK-DS 发布于 2001-09-11,并于 2001-08-22 实施。
DS/EN 12050-4-2001在国际标准分类中归属于: 91.140.80 排水系统。
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