A three zone underground sprinkler system came with a house we recently purchased. After repairs to heads and valves, I have zones 1 and 2 working. The valve for 3 works just fine, but several heads are missing or broken. In only one place has water come up out of the ground, and there the PVC pipe was sheared and the head was missing. This spot appears to be a branch off the main line in the zone. Given the location of this leak, I'm guessing there are at least two more branches off the main li...
