I just bought a new house in January, and I am doing a lot of landscaping. I am getting ready to add a few more sprinkler heads and I needed some help fixing my pressure vacum breaker?? I turned the main water valve on and their was no problem with the pressure vacum breaker. I ran my system through zone 1, 2, 3, and 4. But when I got to zone 5 I noticed I had a major hole in one of my lines, so I fixed the line and continued with my system check. When I ran through the system again zone 5 would not shut off even when I turned the sprinkler system off. (Is this due to a failed solenoid?) I went back to my sprinkler boxes and as I turned the corner the top came shooting off my pressure vacum breaker and water will not stop running. I had to turn of the water on the main water valve, and I'm definantly going to have to replace the pressure vacum breaker because it is in 3 pieces. Will replacing the PVB fix this problem, or is there more?