Tom Raymond Posted September 30, 2012 Report Share Posted September 30, 2012 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. Quote Link to comment Share on other sites More sharing options...
ghentjr Posted September 30, 2012 Report Share Posted September 30, 2012 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. You mean you could not hear the pipes moving? Help me out here. Quote Link to comment Share on other sites More sharing options...
Tom Raymond Posted September 30, 2012 Author Report Share Posted September 30, 2012 Except for right at the manifolds the tubing was very loosely supported at 8-10 foot intervals. The well pump developed 30 PSI before the softener, but opening the taps at the kitchen and bath sinks and the tub dropped the manifold pressure to below 10 PSI. The pressure was better with the softener bypassed, but the flow was still anemic. Even at those low pressures I would expect the tubing to flop around as the taps were opened, especially with >60% pressure fluctuations. Quote Link to comment Share on other sites More sharing options...
Bill Kibbel Posted October 1, 2012 Report Share Posted October 1, 2012 Water supply and distribution pipe must conform to (National Sanitation Foundation). NSF 61. Reinforced clear PVC tubing isn't on that list. It is likely listed as conforming to NSF 51 for food equipment. It's primarily used for beverage transfer. (I inspect lotsa restaurants) Quote Link to comment Share on other sites More sharing options...
Tom Raymond Posted October 1, 2012 Author Report Share Posted October 1, 2012 Thanks Bill. I found the food service listing but missed the other. Quote Link to comment Share on other sites More sharing options...
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