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Mat, You are correct that I am not a welder. I am an elevator constructor. Your also right that the regulator is on the bottle and the hoses do not get high pressure O2 but you are not right as for the max of 15psi O2, but this is not my point. My point was the irony of how careful we are in the diving industry with our oxygen compared to another industry. I have done some working dives were in fact we will run the surface supplied O2 for our carbon arc tourch up to 100 psi or so.. As a elevator constructor we do much iof our own iron work and oxy-acetylene cutting we may rum the O2 up to 28 psi at times. I assume you are not a welder yourself... John Mat Bloedorn wrote: > > John, > > Welding setups use a regulator right at the tank. > There is no high pressure O2 past the regulator. The > O2 pressure in a welding hose is a MAX of 15 psi! I > assume you are not a welder... > > Mat. > > --- John Walker <techdive@ea*.ne*> wrote: > > Hi Mat, > > > > Curious as to how UNEDUCATED contruction workers > > get away with it on > > their oxy-acetelyne tourches. Often a iron workers > > cutting tourch hoses > > are in excess of 50'. > > Its always amazed me as to how construction > > workers keep getting away > > with the abuse they put on their oxygen > > systems,throwing cylinders off > > trucks right into the dirt, install the dirty > > regulator and dirty hoses, > > smack it with a wrech and their off! > > I grew up in the oil fields and you would'nt > > believe what their > > oxy-acetylene equipment lay in there. Oily dirt. > > Don't get me wrong. I'm not trying to justify > > slacking in our own > > standards in diving. I just thinks its ironic to > > look at. > > > > > > John > > > > Mat Bloedorn wrote: > > > > > > I assume the needle valve will be on the mixing > > panel. > > > and the cylinders 30 ft away. If this is the case > > it > > > is in your best interest to turn the valves on the > > O2 > > > cylender on verrrrrryyyyyyy slowwwwwwly. Since > > the > > > needle valve is closed you effectively have a long > > > hose with a dead end at the mixing panel when the > > O2 > > > cylinders are first turned on. This could create > > a > > > problem area especially if the O2 cyliners are > > turned > > > on quickly when the line is depressurised. > > Perfect > > > scenario for that adiatbatic thingy to take place. > > > > > > Mat. > > > > _________________________________________________________ > Do You Yahoo!? > Get your free @yahoo.com address at http://mail.yahoo.com -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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