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Unheated garage - inside water hydrant

m123

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Joined
Sep 28, 2016
Messages
47
Location
Midwest
Hello all,

I wanted to provide some pictures of what I did when installing a frost proof water hydrant inside my unheated garage. This site has been so useful I wanted to provide some input of my own that I hope will help someone else as the site has helped me out.

I live in a an area where the frost depth is 4 foot during winter. I wanted water in my garage but didn't want to worry about keeping the space heated year round. I installed a water hydrant inside under the slab, and supported it with rebar. I connected a 1" water line to a brass elbow and secured to the bottom of the hydrant. I set the hydrant with the elbow on a brick near my wall footing for a sturdy level surface that I hope will not settle.

To solve the drainage issue, I connected a 1/4" pex tubing with a hose clamp to a barb fitting and screwed it into the drain hole on the hydrant. I then ran the tubing to a small pit outside of the foundation wall under the footing. I dug a hole a little larger than a 5 gallon bucket into the ground and filled it with washed rock. In the middle of the rock pit, I put in a short piece of perforated tile and two caps, and drilled a hole in the top cap to insert the piping. The perforated tile creates an airspace so that the 1/4" drainage pipe should never plug. I then covered the pit with silt fabric before backfilling to prevent dirt from silting into the gravel pit. Be sure to test all connections for leaks before back-filling everything.

This may be way overkill, but didn't want to worry about an issue down the road. I hope this helps someone, and comments welcome :)
 

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Kaizen

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Jan 9, 2015
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New England
confused.....how is that going to not freeze? no way that drain setup would be allowed where I am.
 

Stuart in MN

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Sep 8, 2005
Messages
23,135
Location
Minneapolis
confused.....how is that going to not freeze? no way that drain setup would be allowed where I am.

Frost proof hydrants have the valve down at the bottom, below the frost line. The drain line drains off any water left in the pipe between the valve and the top of the hydrant when it's shut off. They're commonly used outdoors without issues.
 

a52-830

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May 28, 2016
Messages
4,644
Location
north of boston, massachusetts
Frost proof hydrants have the valve down at the bottom, below the frost line. The drain line drains off any water left in the pipe between the valve and the top of the hydrant when it's shut off. They're commonly used outdoors without issues.

yes, but you need to remember to unhook the hose. if you dont, it might not drain.

if you are lucky, it just freezes the pipe solid, and you are out there with a hot air gun for some period of time. if you are not lucky, it bursts the pipe underground, which is not a great repair job in freezing weather. . . . trust me on this . . . . always remove the hose. i installed quick release fittings on all my yard hydrants, so there is no excuse for not removing the hose. . . . . cause you really need to remove the hose . . . . i did mention that, didnt i? . . . cause it is important . . . .
 
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Kaizen

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Jan 9, 2015
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6,948
Location
New England
Frost proof hydrants have the valve down at the bottom, below the frost line. The drain line drains off any water left in the pipe between the valve and the top of the hydrant when it's shut off. They're commonly used outdoors without issues.

ohhh I didn't see that picture. makes sense now. thought he was in England and what they call hydrants was just our normal shut off
 

Bondo

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Joined
Dec 22, 2007
Messages
2,549
Location
Greenfield, Maine
Ayuh,.... I've got 2 of those at my garage, 1 inside, 'n 1 outside,....

Didn't get all fancy like that with the drains though,...
The entire line is bedded in crushed limestone, 'n it just perks away under the hydrant,...
 
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