To avoid this discharge, install a spring-loaded check valve ahead of the backflow assembly to lock-inthe downstream pressure.
To avoid this discharge, install a spring-loaded check valve ahead of the backflow assembly to lock-inthe downstream pressure.
如果放置在坑内，则应该采取措施使得排放总是在地面上，或对于坑内排放，要确保在安全阀下方配置一个适当的气隙。