spillage

This device should be installed at the furthermost downstream end of the supply pipe or fixture where temporary spillage due to critical flow pressure conditions can be discharged harmlessly.

这种装置应该安装在供应管道或卫洁具下游尽可能远，并且由于临界水压环境可能产无害排放的暂时性喷溅的地方。

A strainer is recommended to be installed ahead of the backflow preventer to prevent the fouling of the check assembly and resulting spillage from the valve during repressurization.

建议在防流前安装一个过滤器，防止由于止成受到污染而导致这种门在再增压期间产泄漏或溢出。