I bought a few segments of commercial waterers at an auction this weekend. Ten foot square PVC pipes that fit together via black rubber boots and hose clamps, and a gravity feed nipple with drip cup every two feet. It's missing the piece to connect or adapt to conventional plumbing and/or garden hose, as well as a cap for the end to hold in the water. I Googled like crazy and didn't find any info on square PVC plumbing or chicken waterers made from square pipe. If anyone is familiar with this kind of apparatus and knows where I might look for parts for it, I would certainly appreciate the insight! Thanks!