PVC DWV?

danbutter

Well-known member
May 3, 2009
105
Is the DWV stuff really inferior?...I have read a couple posts on not wanting to use it and found out (after not knowing what it was) that it is not for pressure.
Well, I can't even find anything else at my local homedepot or lowes.
You can find some fittings, but most of the stuff including pipe (which is what I need) seems to not even be carried anymore. At least not in 10 ft lengths.

So what is the deal with the DWV stuff? It is still sched. 40. I need to buy 150ish feet to hook up my solar panels and don't wanna do the wrong thing if there is really something wrong with the stuff.
If it shouldn't be used...what should I use?

thanks for any input.
 

chrisexv6

Well-known member
Feb 8, 2008
340
Milford, CT
danbutter said:
Is the DWV stuff really inferior?...I have read a couple posts on not wanting to use it and found out (after not knowing what it was) that it is not for pressure.
Well, I can't even find anything else at my local homedepot or lowes.
You can find some fittings, but most of the stuff including pipe (which is what I need) seems to not even be carried anymore. At least not in 10 ft lengths.

So what is the deal with the DWV stuff? It is still sched. 40. I need to buy 150ish feet to hook up my solar panels and don't wanna do the wrong thing if there is really something wrong with the stuff.
If it shouldn't be used...what should I use?

thanks for any input.
DWV pipe is thinner wall, like you said not for pressure. The fittings are bad too because the slip joint portions are too shallow (1/2" vs 1.5+" on a sched 40 fitting).

Any plumbing supply shops around you? There are a couple here that will sell to cash and carry customers (especially non-HVAC/plumbing stuff....just tell them its for a pool)
 

dmanb2b

TFP Expert
LifeTime Supporter
Apr 4, 2009
3,734
NY
HD by me carries it, maybe just ask the plumbing isle guy (I know sometimes they are clueless too :hammer: ...sorry HD employees), but you can also just visit your local plumbing supply store. Use Sch40/80 PVC fittings. With that long of a run you should not chance using DWV fittings...they are not pressure rated.
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,880
Silver Spring, MD
There exists mixed use pipe that is both DWV and Schedule 40. Anything that says Sch 40 on each piece is fine. If it is DWV and not Schedule 40 then I would avoid it.
 

Isaac-1

TFP Expert
LifeTime Supporter
May 10, 2010
6,711
SW Louisiana
The blown out elbow fitting I had to deal with at the corner of the pool a couple of months ago (professional leak detector, jack hammering up concrete, etc. ) turned out to be a DWV elbow instead of standard elbow, it lasted almost 30 years before blowing out.

Ike
 

danbutter

Well-known member
May 3, 2009
105
JasonLion said:
There exists mixed use pipe that is both DWV and Schedule 40. Anything that says Sch 40 on each piece is fine. If it is DWV and not Schedule 40 then I would avoid it.
After a bit more research the mixed use is what I found out.
I am gonna just make sure it has sched 40 on it and move along with life.

Thanks for the help :wink:
 

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