Art Greenberg wrote:
> easier to find. You can find IPS pipe in thinner wall than Schedule 40.
> Pipes maked SDR-xx (except for the SDR-35) are IPS sizes. The larger the
> number, the thinner the wall. Check with a local plumbing or irrigation
> supply for SDR-41 or SDR-61 (the later having almost the same wall
> thickness as 2729 pipe).
Check out Horizon Irrigation's web site:
http://www.horizononline.com
They carry the SDR series. This is important in the 4 inch IPS (which is
actually 4.5 inch OD) because the thinner wall SDR has an ID slightly over
4 inches while the schedule 40 has an ID slightly under 4 inches.
If you want to slide 4 inch OD irrigation pipe inside 4 inch IPS PVC
pipe, it has to be the SDR type. (Note, this only applies to the
4 inch size. Schedule 40 is fine for 2 and 3 inch PVC).
Another supplier for exotic pipe is Ferguson:
http://www.ferguson.com
Rick N6RK
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