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2005-10-02, 11:04am
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Senior Member
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Join Date: Jul 02, 2005
Location: Wisconsin
Posts: 637
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Oxygen tank regulator
Wondering why the pressure changes (low pressure guage) while I am using it? I get it all dialed in sweetly and then within 10 minutes or so it has jumped up to twice the pressure I started with! Any ideas? I have performed all my leak tests and everything was fine. I even read the manual (ha - YES) and saw nothing in it about that. The propane guage stays just fine, it is the oxy that is a problem. 
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2005-10-02, 12:41pm
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boro color bender
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Join Date: Jun 06, 2005
Location: The Oregon coast!
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Not sure exactly why it would do this, but I would suggest calling a local welding shop. I know my guys service regulators, so they should have an answer if one doesn't come come along here. 
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"Truth is, everybody is going to hurt you; you just gotta find the ones worth suffering for." -Bob Marley
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2005-10-02, 7:30pm
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Gentleman of Leisure
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Join Date: Jun 10, 2005
Location: A Little Bit West of Yosemite Valley
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Does it stay at the "jumped up" pressure or does it vary as time goes on?
Dale M.
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Vendor-Artist-Studio-Teacher Registry
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San Francisco - A Few Toys Short of a Happy Meal
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2005-10-03, 5:00pm
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Senior Member
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Join Date: Jul 02, 2005
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it seems to stay at the jumped up pressure. Like if i set my propane to 3 and my oxy to 5 the oxy goes up well beyond 10 within maybe 15 minutes? I am usually so busy playing i lose track of time but now i see it happen every time. It as BRAND NEW set up, new hoses , regulators etc. Any ideas? 
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2005-10-04, 5:30am
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Safety ALWAYS
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Join Date: Jun 10, 2005
Location: Sauk Rapids, Minnesota
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Look at the 2nd dial of the regulator, the one that shows the line pressure going to your torch. What is the maximum pressure shown on the guage?
I'm guessing you have a high pressure regulator, and the problem is that you are trying to set a pressure for which the regulator is not accurate. This is a fairly common problem and can be resolved by purchasing a low pressure regulator from a local welding shop - they may need to order it, but for lampworking on glass, you need a regulator that has a maximum pressure of between 30 and 60 PSI.
If your regulator goes to 120 or higher, you are trying to set a pressure in the lower 5% of the regulator range, and they are just plain not designed to work properly that low.
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Chaotic Glass: Safety for the glassworker, and random thoughts and opinions on the state of the glassworking world
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2005-10-04, 10:02am
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I sure hope I have the right regulator! I got the hoses, torch and regulators from the glass shop that teaches beadmaking and glass working and sells all the supplies. I am at work right now and will check this out when I get home.
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2005-10-21, 6:27am
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Join Date: Jul 02, 2005
Location: Wisconsin
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trying something new
I found mention several times of setting the pressure higher than what my torch says to do. It has somethign to do with utilizing the regulatros correctly? Here is what one Arrow Springs says: "We recommend the following pressures:"
· 20 to 25 pounds for oxygen
· 10 to 15 pounds for propane
So i'll try it. It appears the 'standard' is 3 propane, 5 oxy but i have also seen deviations. What are y'all doing? (I have a new Mini CC- instructs say 3-5 ratio)
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