[Shop-talk] Winterizing Sprinkler System

[Steven Trovato]

That's what I always did.  The air you are 
introducing is going in the same direction as the 
usual water flow so it passes through without any problem.

-Steve

At 12:48 PM 11/5/2019, Jim Stone via Shop-talk wrote:
>Thanks, guys.  I just bought the adapter; it 
>will be here on Thursday, well ahead of any freezing temperatures.
>
>John’s comment about a backflow preventer 
>valve does have me rethinking one aspect of my 
>plan.  The system installer put in an outside 
>hose barb that he intended for blowing out the 
>system, but I had thought it made sense to move 
>ahead of that and start where the system 
>originates in the basement.  I can isolate the 
>sprinkler from the rest of the system and blow 
>it out from there.  Unless there is a good 
>reason not to do it that.  If there is a 
>backflow preventer valve between the hose barb 
>and the basement, might there be a problem blowing it out from there?
>
>Jim


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