I tried using nipples with 3/4 inch PVC and they worked but the pressure (from my Well) was too great for them. (Too hard to push the nipple value and came out way too fast.) I ordered a pressure reducer from BackYardFlock and it came with an attachment on each end to glue to 1/2 inch PVC. It appears that 1/2 inch might be too tight for the nipples so I'm asking if any one has tried this? Thank you for any response.