Sorry for the long delay, but here is what I used to plumb my air. The company who makes this stuff is called Prevost, and I got it when I bought my compressor. It’s all modular, and is super easy to add drops and extras you didn’t think of the first time through. The piping is aluminum, and the fittings have what looks like a “shark bite” washer that grabs onto the pipe as the end caps get tightened. There must be an O ring, or something inside because there are no leaks. The triangular looking piece is for 2 extra air connectors, and also has a drain.
