prestolite air-acetylene torch

Jewelry | Welding

I am returning to silversmithing after 20 years. I have a B tank acetylene torch with prestolite torches. I use air rather than oxygen so I have only one tank. When I light my torch (0, I believe) it has a pretty little blue flame but goes out most the time when the hose is moved. I've cleaned the tip and tried to adjust the air but I'm not sure what else to do. Does any one have any suggestions? How are the tips put on to allow enough air I have tried to locate instruction of the tank and torch tips but haven't found much other than turning it on. Any help will be appreciated.
Thank you,
CJ


Rich Waugh's picture

CJ, Prestolite torches draw

CJ,

Prestolite torches draw in atmospheric air from the front, right at the point where the tip screws into the handle. If the torch has sat idle for years, the air inlets could be clogged with dust, dirt, soot or insect nests. Take the tip out, remove the hose, and blow the torch body thorough from both ends with compressed air. If you don't have an air compressor, get one of those cans of air they sell to clean computers.

If that doesn't do it, you may have a problem with your regulator not supplying sufficient gas. In that case, you need to take the whole works to your welding supplier and have it checked out by a pro.

Rich


CJ's picture

prestolite air-acetylene torch

Thanks Rich, that sounds good. Thanks, CJ


visitor's picture

Are you using the very tiny

Are you using the very tiny tip? It can be a hard one to light without blowing it out a few times in the process. Try a bigger tip and/or reduce the presure.

marilyn


visitor's picture

I dimley recall directions

I dimley recall directions for my PrestoLite and B tank saying to set the black dial on B which is approximently in the middle.

marilyn


CJ's picture

Comments

I do appreciate the helpful suggestions on how to solve my torch problem. I'm not so lost when soldering with an iron while building stained glass, both leaded and copperfoil but I'm on a learning curve with a torch. I think my biggest problem is overcoming my fear of them. I just wanted to say thanks for people taking the time to give me some guidance.
CJ


visitor's picture

Remember that this system

Remember that this system makes a popping noise when it's lit and turned off. It makes a softer flame than torches with oxygen and you are far less likely to burn a hole in anything. Get some scrape metal and a fireproff surface and experiment. Try to melt some of the metal. Solder scrape, it's only metal.

marilyn


silverpounder's picture

Torch

Sometimes it helps to just turn the regulator all the way out. it should have no flow, then turn it in until you get a good flame. They seem to "pop -out a bit less with a slightly lower pressure. The small tips just dont seem to be able to use too much gas. And the big ones still seem like you can "cram" too much gas thru it.


silverpounder's picture

Torch

P.S.: If you can not stop the flow the regulator is hardened or leaking. This would be by backing the knob all the way out. Then its rebuild kit time. Cheap, easy, and you wont burn your house down! thats So good! God bless! be safe! Rob


visitor's picture

Prest-o-lite regulator rebuild kit

Where would I buy a Prest-o-lite regulator rebuild kit?

Chuck in E. TN


visitor's picture

Prest-o-lite regulator rebuild kit

this place has them,,,
http://www.monsterslayer.com/pages/Torches/Torches.aspx


M. Whittle's picture

Prest-o-lite acetylene B regulator

Hi all,

I just purchased a new air acetylene torch and have it all set up, checked for leaks, and all is well EXCEPT I don't quite "get" this regulator.  It just shows full to empty.  The instructions say there are "letters embossed on two flat surfaces on the screw" that are supposed to regulate the pressure.  We have looked all over that thing for an "A," "B," or "C," but they are no where to be found. What screw? I would have thought it was the cap, but since it's supposed to line up with the cap, that doesn't make sense.   Instructions say "The regulator valve opens when the point of the diamond around letter "A" is flush with the front surface of the cap."  I'm assuming the cap is the black dial that says Prest-o-lite, so the letters should be somewhere around there.  Can someone tell me what I'm missing here?


marilyn's picture

The black screw is under the

The black screw is under the regulator and is about two inches diameter. Use a flashlight and you can see the letters. B is a good place to start .


M. Whittle's picture

Prestolite air-acetylene torch

Sorry for the late response, but...thanks Marilyn.  Could they have made it any harder to see those letters??? It looked like little Xs without my binoculars ;o). 

 


marilyn's picture

I know what you mean. I’m

I know what you mean. I’m glad that I could help. This is the only torch that I use.