There are lots of books on plumbing, from code books, to 1-2-3 how-to books, and some (usually older) training manuals for apprentice plumbers. I would say that NONE of them cover what you ask. You learn about fittings by visiting manufacturers websites and looking at spec sheets ( Watts Brass and tubular, Charlotte Pipe, Nibco, Watco etc) and mostly by going to a supply house or hardware store and getting your hands on stuff. That is the way most of us learned.






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