| 摘要 |
<p>A plurality of wellpoints inserted into the ground are connected to a header pipe (10) from which water is pumped to remove excess ground water. The header pipe lengths (14) are coupled together by coupling connectors (31, 35) which are provided with two or more branch pipe connections (37) to which the individual wellpoint hoses (39) are connected. The coupling connectors (32, 35), which may be integral or in two parts, avoid the need to provide individual tapping points along the lengths of header pipe. The coupling connectors (32, 35) may include integral valves (40) for adjusting the flow from each wellpoint, and a sight glass (42) for viewing the flow.</p> |
