This standard applies to devices classified as atmospheric type vacuum breakers that are single pipe-applied (does notapplytot ank ballcocksorsimilardevicest hatdepend on floatoperatedv alves to control flow). The purpose of these devices is to provide protection of the potable water supply against pollutants or contaminants that enter the system due to backsiphonage through the outlet. Under backsiphonageconditions. a small amount ofwater is permitted toexit through the air ports.
ASSE 1009-1990由美国协会 US-ASSE 发布于 1990-01-01。
ASSE 1009-1990 在中国标准分类中归属于: A01 技术管理。
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