排泄管与安全阀出口必须有相同的通径，必须从安全阀开始垂直向下。

The drain pipe must be the same size as the valve outlet, and must pitch downward from the valve.

youdao

排泄管与安全阀出口必须有相同的通径，必须从安全阀开始垂直向下。

The drain pipe must be the same size as the valve outlet, and must pitch downward from the valve.

youdao