Thanks Robert I might suggest you forwarding this to the editor Bob Hohf. It should be printed. Cheers RicB Rob Goodale wrote: > Journal Article - BAD IDEA! > > I was reading an article in he latest PTG Journal, (March, 2004), when > I identified a _major_ hazardous no-no. The article is on page 25, > "Finishing Pianos: _The Jewels of the Furniture World, Part 6._ > > In the article it recommends using PVC pipe for plumbing your shop > with compressed air to a stationary compressor. This is a subject > that I had already been exploring, as I am intending on plumbing my > shop for compressed air with multiple tap points throughout the shop. > > Here is the problem: PVC is designed for transporting non-flammable > liquids, i.e. water, NOT compressed air or gasses. Under pressure PVC > becomes very rigid and non-flexible. PVC plastic does not expand, it > explodes! In such an event it shatters like glass sending flying > shards in every direction. There have been mulitiple reports of > serious injury resulting from exploding PVC line being used for > compressed air, including the relatively low, (55-130 PSI) pressures > generated by common shop compressors. It is tempting to use PVC > because of it's cheapness, easy installation, and high resistance to > corrosion. Unfortunately it is not a wise solution. Use copper or > steel pipe only, _not_ PVC!!! > > The following links will take you to credible data on why not to do > this, (including OSHA data which forbids PVC for compressed air). > > http://wolfstone.halloweenhost.com/LocalMirror/hib19880520.mht > http://www.lni.wa.gov/Safety/KeepSafe/HazAlerts/902.ahttp://wolfstone.halloweenhost.com/LocalMirror/hib19880520.mhtsp > http://www.woodcentral.com/bparticles/airpiping.shtml > > Rob Goodale, RPT > Las Vegas, NV
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