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Tool Talk Discussion Forum

water line install ?

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paul

11-12-2004 17:43:05




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I am going to put in a no-freeze cattle water. I plan to hook into an exsisting line. Water pipe needs to be 6' deep here. The water line is older than I am. I can figure out what to do if I find plastic, but I expect to find good old galvanised water pipe - I'm guessing 1.25 inch pipe.

What is the best way to cut in & splice my T into that and get it to seal in a deep ol cold hole?

The water supply is gravity feed, I suspect 10-15# pressure at that depth, but I don't want to have to dig it up again....

Also, what are my options for a water shut-off to this T, I'm familiar with the drain-back deals in a pit, but this waterer will only have a 1 foot or so tube coming up, is there a way to install a shut-off down there?

If I have to I can trench over to a pit & run new pipe, but man this would be easier if I can tie in...

--->Paul

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T_Bone

11-14-2004 01:22:57




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 Re: water line install ? in reply to paul, 11-12-2004 17:43:05  
Hi Paul,

A water pipe that's 40yrs old is not going to like getting new threads or being cut. It's got to be pretty thinn by this time and with a tad bit of scale inside the pipe.

I would be planning on laying a new pipe.

The valve your looking for is called a silcox valve. They come in all different shapes for both vertical and horizontal installs with one thing in common, they drain the stand pipe of water when shut off.

T_Bone

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paul

11-14-2004 08:13:09




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 Re: water line install ? in reply to T_Bone, 11-14-2004 01:22:57  
Yea, I'm leaning towards leaving old dogs lie & putting in new plastic from the old pit. Then I need to figure out how to make a hole in the concrete pit wall. Then I can use a 'familar to me' drain valve in the pit.

--->Paul



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msb

11-12-2004 20:16:57




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 Re: water line install ? in reply to paul, 11-12-2004 17:43:05  
Easiest way to add a line is to use Dresser couplings.Saw a section out of the existing line however long you wish( I usually cut a couple feet out).Cut two pieces of pipe and install a tee between the two pieces.Hook up this make up piece using the two dresser couplings in the existing line.Then install a short nipple in the tee where the new line will come off and install a stop and waste valve( Be sure to install the waste hole on the shut off side).Then continue the new line to where you want it to go. Bed the valve in a few shovel fulls of coarse gravel so the drain back water will have a place to go. Install a 1/2" reinforcing(rebar) rod in the stop and waste valve.Then notch out a pipe that will fit over the stop and waste and run the reinforcing rod up through the pile to just above ground level.Bend an ell in the rod to use as a lever to turn off the valve when needed.You can use PVC pipe and couplings.Dresser couplings will seal both iron pipe and PVC in the same coupling.It doesn't matter what material you use the couplings will seal.

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sheiserman

11-12-2004 18:42:54




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 Re: water line install ? in reply to paul, 11-12-2004 17:43:05  
Once you know the diameter galvanized pipe you're dealing with, get a tee, two 6" long nipples and two underground compression couplings to tie back into existing line. Cut threads off one side of each nipple. Screw each nipple into the tee. Measure overall (end to end) length of the tee with both nipples. That is the minimum length needed to cut out of existing line. After you've cut the line, clean the pipe where the comp. couplings will need to seal. Underground couplings do not use ferrules, but rubber seals instead. Cleaning the scale off the pipe is necessary. Once you've put it back together and tightened both couplings, you can run a different line off the tee, using poly if you would prefer. As far as underground shut-offs go, I'm only familiar with curb-stops. Any plumbing contractor can sell you one of those. It is a valve that you put a cast iron sleeve over that extends up to the surface. You use a long handled "wrench" to turn valve on or off. That's how I would tie into an existiong galvanized line. If I had the choice, I would run a new line from the pit with good old poly. and brass fittings. Good luck.

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SHeiserman again

11-12-2004 18:58:24




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 Re: water line install ? in reply to sheiserman, 11-12-2004 18:42:54  
If you're going to be digging 6' deep, make the top of the trench/ditch at least 6' wide too. Go wider if you'd like, by all means. And if you really want to impress the neighbors, put a ladder in the hole with you. It's worth it. If you already know this, disregard.



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paul

11-13-2004 07:14:35




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 Re: water line install ? in reply to SHeiserman again, 11-12-2004 18:58:24  
I know what you are getting at. We have extremely stable soil locally, but certainly a concern. As I'm using a new to me backhoe, I'm sure the hole will be quite sloped. :)

--->Paul



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SHeiserman

11-13-2004 10:42:22




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 Re: water line install ? in reply to paul, 11-13-2004 07:14:35  
You got it made then. The rule we used to go by was if you could stick your thumb in the wall of the ditch past the first joint, it wasn't very stable ground.



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