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A question that I should know the answer to.... but, I don't. For my Smith rosebud tip that I am using, the pressure chart calls for 15 psi on the acetylene. I know that much above 15 psi is dangerous. Now the question. When I have the gas valve open on the torch handle, the gauge reads at 15 as I set it. When the gas valve is closed the gauge spikes up to about 20 psi. Is this a problem?
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Acetylene Question
No, perfectly normal. Unless it spikes drastically, then there may be a problem. -
Good question, when all the valves are closed, set it to 15 psi and you be safe, I'm 98% sure that if the regulator shows 20 psi when closed you are operating outside the safe limits.
Make sure you dont have a propane regulator, they can look the same and allow you to operate at much higher pressure.
The one I use for the big rose bud looks just like a acetylene but says propane when you rad the info.
The line pressure gauge should be red after the 15 psi and above.Comment
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Definitely an acetylene regulator. Thanks guys for the help. I used to set it and not worry in a shop setting but, as I get older and the fact that my kids are on the same property......the wreckless abandon has been replaced with caution.Comment
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What is the consumption of that rosebud in CFH? Make sure your tank is large enough to safely support that withdrawal rate (1/7th or 1/10th rule). I saw some of the Smith rosebud specs and all recommended one or more 350 CF tanks. They also recommended high-flow flashback arrestors. Flow restrictions could affect your pressures.Miller stuff:
Dialarc 250 (1974)
Syncrowave 250 (1992)
Spot welder (Dayton badged)Comment
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USMCPOP....you hit the nail on the head. I only have a #4 acetylene cylinder and my rosebud draws 51 scfh.......I need 350+ cu. ft. To use safely. I was overrunning my cylinder's capacity. Im glad you brought this up. Coulda got ugly. Thank you!Comment
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You may want to look into using oxy/propane - that's what I use for cutting and heating.
Cheaper and no withdraw rate or overpressure issues."Beware of false knowledge; it is more dangerous than ignorance." ~George Bernard Shaw~
Airco 300 Heliwelder
Dialarc 250 AC/DC
ESAB 161
Invertec v250 and v300 Pro
SA200
Spectrum 700 plasma
MM210
Miller HF-15-1
Dirty ugly tools - perfectComment
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Good idea Dave!Comment
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I've been using oxy/propane since the 90's and have never regretted making the changeOriginally posted by Ironken View Post
A person can't weld with propane, but I've got mig, tig, stick so it's of no concern."Beware of false knowledge; it is more dangerous than ignorance." ~George Bernard Shaw~
Airco 300 Heliwelder
Dialarc 250 AC/DC
ESAB 161
Invertec v250 and v300 Pro
SA200
Spectrum 700 plasma
MM210
Miller HF-15-1
Dirty ugly tools - perfectComment
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