ctlogistics
New Member
I need to install a Wilkins 975XL RPZ backflow preventer for my in-ground irrigation system. I'm getting conflicting answers from multiple city inspectors and the around the web.
First question: Does a RPZ backflow preventer have to be installed above the tallest sprinkler head? One city inspector says yes, one says no.
Second question: The instructions for installation say the maximum height off the ground is 30". The best place for this to come out of my house would be about 40"-50" above grade (backside of walk-out). City inspectors aren't sure about this maximum. I've seen new home installs (less than 6 months) where the units are installed more than 30" above grade.
Any clarification would be great.
Thanks.
First question: Does a RPZ backflow preventer have to be installed above the tallest sprinkler head? One city inspector says yes, one says no.
Second question: The instructions for installation say the maximum height off the ground is 30". The best place for this to come out of my house would be about 40"-50" above grade (backside of walk-out). City inspectors aren't sure about this maximum. I've seen new home installs (less than 6 months) where the units are installed more than 30" above grade.
Any clarification would be great.
Thanks.