Had a customer call to repair there reticulation in Hillarys after having a tree removed. unfortunately this tree was planted next one if the station solenoids. this meant that over years the roots grew around the Pvc pipe crushing them and reducing flow. once the tree was removed there was a fair mess to sort out. we located the main line and rerooted the pipe work along with tracking the wires back to a known point and running new station wires.
As large amount of deadbree went into the main 25mm line as there was no way of getting this out he had to flush the system. when flushing the system we made the decision to clean out and replace the internals of the solenoids further down the line being that they where over 25 years old.