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On 1/30/20 8:54 AM, David McKinnon wrote:
Jim,
I've used both the SDR pipe and normal PVC up to sch 120. I then turned to
using PVC Heat Duct pipe. It has thin walls and comes in diameters up to
at least 24" which makes larger secondaries much lighter. Originally, I
had some concerns about it being gray (possibly due to carbon in it),
however, although I didn't specifically measure it, I did not see any
noticeable difference in performance.
Here's a link to one company that sells it:
https://www.indelco.com/c-2352-pvc-gray-duct-pipe.aspx
Cool, and it's about 2/3 the price of drain pipe (20' is $250 for drain
pipe) - this is about $150 for 20 feet.
Now to find a local supplier in the Los Angeles area.
Best regards,
David L. McKinnon
On Thu, Jan 30, 2020 at 11:01 AM jimlux <jimlux@xxxxxxxxxxxxx> wrote:
Does anyone have practical experience with PVC plastic pipe, comparing
SDR (Sewer) vs D2729 (Drain) - the drain pipe is about half the wall
thickness (0.1", 2.5 mm) and is cheaper and lighter.
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