Anti siphon valve?
Question:i just finished installing a sprinkler line for my lawn and i used anti siphon valves and 4" sprinkler heads. it says in the manual that it has to be at least 6" from the highest sprinkler. i think i made a mistake. i installed it 7" from the highest 'sprinkler line' . will i have a problem with that regarding the operation of the anti siphon valves and the sprinkler system itself?
Answers:
anti siphon valves are junk. just install regular valves and put in a backflow preventer on your mainline before all the valves, but right after the shut off vavles.
as you stated, you said the directions said "at least 6" from the highest sprinkler" 7" will be ok as well as 20". i don't know what region you are in, but if you are in a freeze zone though it is always a good idea to blow the lines when winter comes around.
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