For above ground installation, the receiver &launcher shall be horizontal, which center is about 1m high from ground, and shall be connected to underground pipe by nozzle stub and bend but not skewed crossing connection.
For above ground installation, the receiver &launcher shall be horizontal, which center is about 1m high from ground, and shall be connected to underground pipe by nozzle stub and bend but not skewed crossing connection.
地面安装时，收发球筒为卧式，中心距地面高度一般为1米左右，通过短管及弯管与地下管线连接，不宜采取斜交叉连接。