Any of you ever try these for reservoirs? I've not seen them mentioned.
I like them because they are thin-wall and will let 1/2 ID clearflex slip over with a little work, yet the ID is around 9/16. The 90, because it is designed for wire, is a slow gradual turn that seems to cause a minimum obstacle. Comes complete with ORing and threaded backer. Stick 'em in a hole in just about any near flat sided container and tighten. Always water tight for me. The barbs have a gentle thread spiral that really helps when putting the tubing on. Lowe's and Home depot both carry them in the electrical section.
http://www.carlon.com/Brochures/7B1.pdf