 | Shut Off Plumbing Valves - Irrigation |
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Question: I designed an irrigation system and had my plumber sweat the regulators in, etc. and am wondering if what I designed makes sense. I did not put in a check valve as I assume that sprinkler valves have check valves or (anti-siphon valves) encorporated and thus the need for check valves on the irrigation line is not necessary. I put in a ball valve shutoff in every region (tri-level house with three different yard/hill areas) creating the option of shutting off every region. I put in a shutoff in also that shuts off the house independent of the irrigation system. and one that shuts off the irrigation and house lines. I put in a hose bibb that can be use to test inlet presssure for the house as well as one that can be used to test inlet pressure for the irrigation line.
Answer: -That is certainly NOT true for any in-ground sprinklers I've seen. Plumbing codes around here require an anti-siphon valve. Where did you get the idea that sprinkler heads had this built in? -SOME sprinkler valves have the anti-siphon mechanism built in. If they do, they will always be above-ground. If your valves are underground in an access panel (as is common here in Minnesota) you'll need the anti-siphon valve.
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