Brent, It is your butt (or your customer’s) not mine. J R/Jay Resepectfully, Jay K. Jeffries Andros Is., Bahamas Save the whales, collect the whole set. From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brent Hartwig Jay, The plastic piping has to many holes in it to build up any real pressure over the external pressure, and it absorbs sound vibrations much better then metal piping, and is far cheaper then SS or other corrosion resistant metal piping. The towel is 100 percent cotton, like the clothing we wear in the chamber. We use a BIBS mask set up to breath the O2, so the chamber doesn't need to be filled with O2. Which would be cost prohibitive and far more dangerous. With the O2 system turned off, I've had candles going in that chamber as I increased the pressure, to see how the flame is effected, It was hard to tell, since the wax was getting hotter over time. But the measurements make it look like at 2 ATM the flame was about a third higher. The percentage of O2 was of course the same. Will do more with that later. Cheers Brent From: Jay K. Jeffries Sent: Sunday, August 09, 2009 5:34 AM Subject: RE: [PSUBS-MAILIST] Submadman HP Air Muffler Brent, If you look at the spec sheets for PVC piping and fittings you will find a warning not to be used for air service. With an inadvertent blockage, the PVC can be quickly over-pressurized and shatter into lethal shrapnel shards. Better to use metal piping for your application. Is the towel flame retardant? And with additional thought there is a fire issue using PVC. R/Jay Resepectfully, Jay K. Jeffries Andros Is., Bahamas Save the whales, collect the whole set. From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brent Hartwig
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