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-   -   anti siphon valve (http://www.diychatroom.com/f16/anti-siphon-valve-187692/)

analogmusicman 09-26-2013 05:50 PM

anti siphon valve
 
I'd like to connect an "anti siphon" valve outside the house just before my 3/4 pipe goes to the valves. I'd like this "anti siphon" valve to have a "port" where I can connect my compressor to "blow out" the lines. where can I get such a thing? or is there some other way to get some air in? I want to "blow out" each zone including valve so there is no water in there to freeze.

tnx,

joecaption 09-26-2013 07:17 PM

Need a picture of your set up.
Just adding on of these in a tee will work.
http://www.amazon.com/Amflo-701-2-np.../dp/B0002V4Q4I

djlandkpl 09-26-2013 10:17 PM

Search for backflow preventer. Watts makes one.

The easiest way is to add a hose spigot on the line and adapt an air line fitting. That's what my irrigation company does when they blow out my system.


http://www.homedepot.com/p/Watts-3-4...3#.UkVxXBDVEU4


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