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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Cutting NPT threads on PVC pipe
My swimming pool pump quit, and the new one is just slightly longer, so to
connect it in the space available, I need what in steel pipe you would call a threaded nipple, except in 2-inch PVC pipe. That is, instead of gluing a PVC male adapter, which would add too much length. Swimming pool plumbing has to be all plastic due to the chemistry of the water. Now Home Depot threads steel pipe, with a nice powered pipe threader on the plumbing pipe aisle, but when I asked them to thread some PVC they practically called me a pervert. They said the only way to get threads on a PVC pipe was to glue on a male adapter, and you can't thread PVC pipe. However quite a few bits of the PVC pool plumbing appear to have been threaded on-site. And interestingly, the classic Ridgid 12R pipe threader has replacement dies specifically for PVC: http://ridgid.com/Tools/Hand-Threader-Die-Heads/ So is threading PVC pipe an unnatural abomination like the top industry experts at Home Depot, in their orange aprons, assert? Or just not often worth the labor versus a glued fitting? |
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