Last week I blew out my sprinklers. I borrowed a compressor from a
friend. Then today while trying to hook up my hose to wash my car, I
accidentally hit the gate valve to my sprinkler feed line and a little
water got in to the PVC line that goes from my hose bib to the
sprinkler manifold under my deck. I was thinking if I poured a little
antifreeze into the line it would prevent any freezing from whatever
little water got in there. Any drawbacks to doing this?
(I have since removed the gate handle so it will not happen again).
When I say add antifreeze, I'm only talking like 1/2 cup.
Diluted with the water already in there, which is no more than 1/2
cup, I thought it would be ok
Suppose 1% of the inground sprinkler owners in your state thought the same
way. How much antifreeze would wind up in storm sewers and ultimately in
rivers, streams, ponds, lakes, etc.?
Again, going back to the other poster, this is the non-toxic stuff.
I'm sorry, but I am not familiar with all of the components and processes
that go into the manufacturing of antifreeze. I did not know that there was
a type that is environmentally friendly. I understand your pain though. I
would hate to have to pay the landscaping company to come back again and
blow out the lines around my place.
Well IF he put antifreeze in there it surely would be the pink rv stuff that
is totally harmless. AND even IF it were the automotive stuff, 15 million
cups of the stuff diluted the way we're talking about would be harmless
I just had an idea. Since this is only a 3/4" PVC about 30 feet long
with the other end open under my deck, I think I can get away with
using a nail gun compressor. It 6 gal. It should be enough volume to
push out whatever is in there.
better blow it again. the smallest amount of water will pool in a low spot,
and if that's not 24" or better underground, it's gonna freeze and break
pvc. Pouring antifreeze in there will probably just push the water further
BTDT........had the same thing happen in another situation where
someone "re-hotted" my blown out sprinkler line.
I considered the antifreeze solution but I just bit the bullet and the
did the compressor thing again because I didn't want to be blowing
antifreeze on my lawn / shrubs in the spring.
I also removed the handle so the mistake was less likely.
Tell your friend what happened...I'm sure he'll be happy to help you
I think you'd better check out the following:
Here's an excerpt:
"The freezing point of an anti-freeze/coolant solution depends on the
concentration of the solution, and rises when the ratio of antifreeze to
water exceeds 60%. . . . ethylene glycol, the principal component of
most antifreezes, freezes at 8 degrees above zero, Fahrenheit. It is
only when water is added that the freezing point is depressed."
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