low pressure O2
I have a concentrator setup with a holding tank, all from OGSI. Purchased it several years back from another lampworker - he used it for about 5 years and now I've used it for another 4 or so years. The output of the holding tank has a regulator on it, runs from 0-25psi. The tank also has a gauge on it to show internal psi for the tank, which never goes above 15psi or so (because that's all the concentrator puts out).
Tonight for the first time, upon close inspection, it appears to me that the regulator on the holding tank output is actually a compressed air regulator, not an O2 regulator. How "bad" is this? Yes, I realize if it was ever used with a compressed air setup, it may have gotten oil in it and oil+O2=very bad things. However, I'm thinking they probably bought the thing brand new, never used it with compressed air, and only used it on this O2 tank. At the fairly low pressures we are looking at here, is this a big risk? If so, and one must use an O2 regulator, where does one find a low pressure O2 regulator? Because all the O2 regulators seem to be for 4000psi or so like used on a K-tank, and that's way overkill, not to mention is impossible to adjust with any precision so that 5psi and 15psi outputs are noticeably different...
I do not want to blow myself up. However, I also do not want to spend hundreds of $ over-engineering something that is not necessary and interferes with being able to achieve good control over how my torches are running.
Thanks in advance for the advice,
Laura
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Lynx with OGSI-15 and big holding tank, Redmax on tanked, and National 3b that swings both ways...
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