I realize this post is months old now and you've probably figured it out, but for future readers, here's what I bought for my PVC bucket waterer today.
1-inch PVC pipe, 2 ft long (to be cut in half)
1-inch PVC Tee
1-inch to 3/4-inchPVC male adapter
1-inch PVC caps(2)
3/4-inch to 1/2-inch brass adapter (to connct PVC to hose)
6' leader hose
3/4-inch to 1/2-inch elbow fitting (to connect hose to bucket)
5-gallon bucket
5-gallon screw-on lid
PVC cement
I already had the nipples, sandpaper, zip ties, and a tube of silicone sealer.
I plan to put this together tomorrow and will get pictures ASAP.
EDIT 2/5/15 1:26 pm:
I ended up not needing the PVC cement and took it back. I forgot to take in-progress pictures and I'm not home now. I'll get to them tonight or tomorrow, but in the meantime here's how to put this thing together. This has 4 nipples and I'm planning on using it to water 10 chicks.
1. Cut 6 inches off the 2' pipe. This is to connect the tee to the adapter. (I forgot and ended up gluing and duct taping those parts. I don't know how well they'll hold so I'll get a new bit of pipe and fix it next week.) Cut the remaining pipe in half and sand the edges smooth with sandpaper.
2. Fit the long pieces into the tee and fit the caps onto the pipe ends. Drill holes for nippes (I needed something a little bigger than 5/16, but I can't remember the size. I'll check and edit this when I add the pictures.)
3. Fit the short piece into the tee and the adapter onto that.
4. Screw the nipples partway into the holes in the long pipes.
5. Make sure the nipples are lined up on the bottom of the pipe. Use the silicone to seal all the seams. Put a little silicone around each nipple at the pipe and screw them down the rest of the way. Set this piece aside to dry. (The tube says 30 minutes but it may take longer; it's rainy/humid here today and it took about an hour.)
6. Drill a 3/8" hole in the side of the bucket about an inch from the bottom. Push in the elbow fitting. Seal around that with silicone and set aside to dry.
7. Attach the brass fitting to the hose. Once the silicone is dry, snap the lid adapter onto the bucket and connect the hose at both ends. Install the pipe with zip ties inside the coop/run and put the bucket somewhere above it so water can flow from the bucket to the pipe. I put mine on a small table just outside the pen because I didn't have a safe way to hang it in the garage where the babies are brooding. Fill and use!
I'm sure there's a way to make this an auto-filling waterer by connecting it to a water source and using some other parts I don't have and can't remember right now, but 5 gallons will last me a bit because right now my birds are little. As they get older and need more water I'll see about adapting it to fill itself.
Edit again:
My bucket sprung a leak where the elbow fitting was installed. I ended up removing the fitting and threading the hose through the hole instead. There were no leaks without silicone around the hose, but I sealed it anyway,inside and out, just to be safe. No more leaks!