Backflow for "Hose Bib" System
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I am thinking about installing a "Poor Man's" sprinkler system (you'll probably think I am crazy when you read this) and need some input on the "plan" and the type of backflow devices that might be necessary.
The "Poor Man's" system consists of connecting multiple poly-pipe lines with pop-up sprinkler heads to my existing hose bibs using the multi-port manifolds and battery powered timers that have recently become available. (I am retired so I have a lot of spare time on my hands). The plan calls for 12 separate "main lines", with each main line attached to a separate port on the multi-port manifolds (a manifold attached to 4 separate hose bibs located on the four sides of my home).
My home is on a well and I have sufficient water pressure to drive 3 sprinkler heads on each line. The hose bibs have what appear to be "backflow" protectors built in, or at least they bleed air when the hose is turned off. I do not plan to use the system to fertilizing the lawn, etc.
My questions are:
1. Am I nuts?
2. Do I need additional backflow protection and what kind?
3. If I can install Pressure Vacuum Breakers 12 inches about the downstream lines /sprinklers, is that enough protection?
4. Can I install the appropriate backflow protection device between the hose bid outlet and the multi-port manifold, or do I need a separate device for each main line?
Any insight you can give will be greatly appreciated.
markejo
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