how much heat would rise up a 1.5" pipe stuck in the ground and capped?

[iamgeo]

Just to make myself clear, I am not trying to be a smartass or anything.
Questions must be asked cause you were not really describing exactly what it is you are trying to accomplish.
I think I get it now though.
You were wondering if there was going to be enough warmth from the ground to keep the pipe that was above ground from freezing.
Also you were worried about dirty water being sucked into the weephole that is underground and contaminating your water supply line.

Is this like an acre or more of land?

[AC_Hacker]

Originally Posted by iamgeo

Also you were worried about dirty water being sucked into the weephole that is underground and contaminating your water supply line.

You know, I think that a lot of the concern regarding garden hoses and contamination comes from the spray bottle thingies that connect to garden hoses and are used to spray garden fertilizer and herbicide, car-wash soap, etc.

Sometimes people leave these things connected to the hoses.

I think there was a valid case to be made that siphon action could bring contents from these bottles into the domestic water supply.

And that's why siphon-breakers are being used on outdoor hose bibs.

I don't know what "underground weep holes" are about...

-AC_Hacker

[launboy]

AC Hacker, he explained what the underground weep hole was for. These yard hydrants are designed in a way that, when you shut off the water, the water thats in the pipe drains out to prevent freezing in the above ground portion of the pipe. To accomplish this a weep hole is placed at the bottom of the vertical pipe underground(presumably just above the valve) to allow the water in the pipe above it to drain out. At least thats my understanding from reading this thread.

Adam