Sch 20 for main water line

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  #1  
Old 04-06-18, 06:26 AM
R
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Sch 20 for main water line

So I did something stupid while trying to clear roots around a pool filter drain line. I hit the main water line.

I live in the Dallas Texas area and had a plumber come out and repair the plumbing piping. He repaired the waste line with sch 40 PVC (not a lot of pressure in that line, and only occasionally) and repaired the main water line, itself PVC with sch 20 PVC. He offered no warranty for the work he did on the main water line.

Is sch 20 PVC code for the main residential water line?
 
  #2  
Old 04-06-18, 07:05 AM
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Only time I've used SHC 20 is for a drain line for gutters.
It's to thin for a pressure line in opinion.
 
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Old 04-06-18, 07:33 AM
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If I'm not mistaken sch 20 is often used in irrigation systems. If you aren't paying close attention it's easy to mistake it for sch 40. I wouldn't want it on a pressure line. It might be ok but you don't have that extra that can be needed with higher pressures. Is this line before or after your pressure reducer valve?
 
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Old 04-06-18, 10:55 AM
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Sched 40 for waste is fine and common.

I've never seen Sched 20 used for supply piping. I haven't been able to find a pressure rating for Schedule 20 PVC online or in my reference books either. I too would be a bit wary of using it for pressure applications, especially a main water line.
 
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Old 04-06-18, 03:12 PM
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I just dont understand why the plumber would have used schedule 20 for the main water line. It specifically says in my bill that schedule 20 was used and that it is not guaranteed in any way. Is that an ethical plumbing job? Patch my main water supply with something you wont warranty?
 
  #6  
Old 04-06-18, 06:35 PM
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Not even sure how he happen to have in on hand that small a size.
Only time I've seen it is in 3 or 4" for drain line.
I can see why he would not offer you a warranty.
I would not invite him back if it was me.
 
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Old 04-07-18, 06:15 AM
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I think something is off with their documentation/bill. Is it possible that it says SDR-21?
 
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Old 04-07-18, 11:15 AM
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I would reach out to him and ask. When doing some research on this I did hear of some plumbers doing underground services using PVC Sched 20.

It could be an error - or maybe he feels that it's sufficient. I would imagine he would be willing to explain his reasoning.
 
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Old 04-09-18, 10:05 AM
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So, apparently its not the main water supply

This line is not the main water supply, apparently.
It runs alongside of my lawn sprinkler line so maybe its a feed line to my sprinkler system.

He couldnt say for sure what it is, though he's sure its not the main water supply. This line runs down the side of my house and the plumber said that the main water supply runs to the front of the house. Apparently he thinks this is branched off from the supply.
 
 

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