A couple more questions to men with experience.
1) I really like the idea of using brass bodied diaphragm check valves. There isn't a lot of information that I can find on buying them or rebuilding old units. I found this eBay listing where they are offering TeeJet 975B brass body parts. I don't know if any of these parts make a single complete unit because I am unable to find any photos of a complete unit nor can I find a resource for rebuild parts. I can live with my inline strainer check valves for a season, but going forward, I would like to upgrade. I have PLASTIC diaphragm check valves on my FMC, but I don't want to take them off of that unit just in case I need it. Any thoughts?
2) Anyone have any brass bodied diaphragm check valves for sale?