Forum Discussion

NanciL's avatar
NanciL
Explorer II
Nov 08, 2014

Pipe draing question ?

When we go to Florida I always drain my entire house with no problems.
I have four low point drains.
My problem right now three weeks before we go is trying to get the water out of a section of pipe that feeds an out door spigot. Normally I can wait until we drain the entire house, but this year we are having extreme cold and I am afraid that that particular pipe will freeze.
All the piping except for that one is in an enclosed heated pipe chase. The shutoff for that pipe is also in the heated pipe chase.
The pipe is about fifteen feet long with a very slight slope from the shut off to the spigot. When I close the shutoff and open the spigot, the suction is evidently preventing the water from flowing out of the spigot.

Is there any simple way of getting the water to drain out with out making modifications to the system ?

I tried letting the water run and then closing the inside shut off, but that didn't work.

Jack L

8 Replies

  • wa8yxm's avatar
    wa8yxm
    Explorer III
    On the shut off valve there should be a small "Cap" on the side of the valve, that is what it is for. You remove the cap and simply tape it to the pipe, you may (Depending on which way the line slopes) need a cup or bucket under the valve to catch drips.

    Option 2 is a device called a Saddle T,, You get one (These are used for things like adding an ice maker) drill a hole (The instructions with the "T" say what size) in the pipe "Downstream" of the valve, install the saddle and saddle T. Then open the T valve to let air in and close it when you restore pressure.

    http://www.naturalhandyman.com/iip/infxtra/infsad.html

    Click the link for more info on Saddle T's.. Including install instructions and a photo of one.
  • stickdog wrote:
    Get a piece of 1/4 plastic tubing and feed it in, it will allow air in to break the vacuum.


    It would be impossible to get it through the outside shutoff

    Jack L
  • Get a piece of 1/4 plastic tubing and feed it in, it will allow air in to break the vacuum.
  • nomad297 wrote:
    I don't think a frost-free hosebib will work in this situation. Does your inside shutoff not have a bleed cap? It should. Look for a small knurled cap on the side of the valve. If there is one, unscrew it to break the vacuum in the pipe.

    Bruce


    You are correct.
    A frost free hose bib won't help clear the pipe of water.
    And no the shutoff is one of those little ones like we have in our trailers with no drain.
    I was hoping some plumber had some method that we do-it yourselfers don't know about.
    I'll probably just end up putting in a quest coupling right after the shutoff and just disconnect that each year which should break the vacuum

    Jack L

    Jack L
  • I don't think a frost-free hosebib will work in this situation. Does your inside shutoff not have a bleed cap? It should. Look for a small knurled cap on the side of the valve. If there is one, unscrew it to break the vacuum in the pipe.

    Bruce
  • SeaDog/BRR wrote:
    I think there are three solutions. 1. turn the water off to the house drain all and then isolate the outside line and turn water back on to house until you leave. 2. install an air gap valve just after the outdoor shutoff valve which will allow the pipe to drain. 3. Install a frost free spigot in place of the existing one.


    Yep, I had the same problem until I replaced the wall spigot with a barn-style vertical frost free spigot.
  • I think there are three solutions. 1. turn the water off to the house drain all and then isolate the outside line and turn water back on to house until you leave. 2. install an air gap valve just after the outdoor shutoff valve which will allow the pipe to drain. 3. Install a frost free spigot in place of the existing one.

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