Today's house had some really fun plumbing. 800SF ranch built over a crawl in 1950. At some point the copper distribution pipes froze in the crawl and some nincumpoop replumbed the place with food grade 1/4" braided PVC. The manifold: Click to Enlarge 26.76 KB The tubing: Click to Enlarge 14.47 KB The support scheme: Click to Enlarge 30.76 KB The flow was as crappy as you can imagine, and fortunately the water softener was sufficiently plugged to keep the pressure low enough to prevent any audible movement in the tubing. This can't possibly be an approved distribution material, any help with a code cite would be apreciated. The DWV, no vents at all, was just as much fun. The tub trap included PVC drain connectors, 2 ferncos, an ABS trap with Schedule 40 PVC arms, PB tubing, and galvanized nipples stubbed out of the cast iron main.