Mystery PVC loop near house


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Old 03-25-17, 07:52 AM
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Mystery PVC loop near house

Great forum here, guys. First-timer. I'm laying an irrigation system around my 1981 house in Florida.

I found a 1" PVC from the county meter 150" from my house. At the slab, instead of connecting to an internal pipe and entering the house, it attaches to a 3/4" PVC that comes up to just a few inches deep, then runs 20' east, doubles back, runs 20' west, has a ball valve, connects to PEX, has a ball valve, and enters the house about waist high into the living room wall.

In other words, before entering my house, the supply water does a 40' loop. I cannot imagine why. Can I remove this lengthy pipe? All comments appreciated.
 
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Old 03-25-17, 08:32 AM
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Pipe

Irrigation or geothermal cooling?
 
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Old 03-25-17, 09:04 AM
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After the water has gone through the county's main several feet below the surface, then through 150' of PVC, the water would seem plenty cool by then. Maybe.

I would think an old irrigation project wouldn't double back after just running along the wall. There are no sprinklers. The westerly inbound run is just an inch away from the easterly outbound run. Here's a diagram of the existing mystery.Name:  Pipe Schematic.jpg
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Old 03-25-17, 09:46 AM
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I've seen those diagrams and types of installs before with houses on a slab.
That piping could have been used for a water softener installation.
 
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Old 03-25-17, 11:22 AM
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Bingo! Points to Team Pete! Thanks.

I'm going to disconnect the 3/4" pipe from the 1" county main. Then I will attach a ball valve and a Y connector. From the Y, I'll feed the 3/4" PEX to the house, and the other half of the Y will go to
1" irrigation main to supply my irrigation system.

Any thoughts? I'll start Monday.
Thanks
 
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Old 03-27-17, 10:21 AM
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I would definitely include 2 shutoff valves, one for the house and one for irrigation.

And don't forget the need for a PVB valve for your irrigation system - or whatever your locale requires.
 
 

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