I have never worked with an irrigation system, but I have a client that needs an additional head to get adequate coverage. The closest line that does lawn, has 7 heads now. Great pressure and volume. The question is : What do I need to consider, when tapping into that line and put another head that doesn't require much pressure and volume? The new head will only hit a 15 ft. radius, but is the same make and model of the other heads.