Here is an example of a manhole installation using existing cables or pipes.
1/ Assembly of the new manhole
After the old manhole with its solenoid valves has been completely dismantled (the cables are not cut, it is better to keep the connections), a new complete manifold is assembled, adapting to the existing one.
Here, three watering networks, drip, so three solenoid valves. A stop valve was added at the entrance of the collector, as well as a second valve to easily purge the collector before the winter.
This is a solution that I recommend very regularly (even if it is not systematic). Removable fittings before and after the solenoid valves.
2/ The manhole
We check and try the positioning of the manhole. In renovation, it is always a little more complex than in a new creation. It is necessary to check that a maximum of elements and connections are inside the manhole (and not under the edges, the walls, inaccessible).
3/ Connections
The manhole has been installed, wedged and filled, it is time to make the watertight connections.
Here you can see the old connections (brown), which have not been removed in order to identify the wires as the new connections are installed (blue or black).
4/ Finishing
Once finished, a bottom of garviers or pebbles, then we wash the manhole; the old grey cable has not been shortened, and there is room in this large manhole to work if needed.
