Thanks guys.

I checked an online yellow pages for a local plumbing supply wharehouse and when I called them, they said they had it in stock.

But, I never made it out to the plumbing wharehouse, since I had to stopped by Lowes first to pick up some other items.

Well, Lowes had what I needed the isle over from where I was looking yesterday. Lowes does carry the copper male & female adapters for both 1½" & 2" copper piping. This time I cut a small pipe section off my existing pool plumbing and brought it with me to test fit all the fittings.

The copper pipe & female thread adapter fit together perfectly. The male PVC threads mate to the copper female connector perfectly also. So, the thread size and pitch are compatible. I also tried and verified that the 1½" & 2" copper thread adapters interface with the PVC threads at the store.

Picture of my 1½" copper pipe and the 1½ female thread adapter:


The copper adapter is stamped "NIBCO"
1½" CXF (female) adapter copper = $12.93
1½" CXM (male) adapter copper = $8.2X (I didn't need this, but priced it for you guys anyways)

The thread adapters are pretty heavy, so I'm not worried about any pressure issues.

The 2" female & male adapters were just a little more. So, price wise these copper thread adapters are pretty cheap.