Troubleshooting Popping

Lefty

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I've posted prior about the same rig but this is a different issue so I thought I'd start a new thread. I have this little setup. The little plastic caddie with the small tanks. I really have no history on the setup as it was given to me. Oxygen is reading over 2000 and acetylene at about 120ish. Right now, I'm just testing and the setup as I am new but have done a lot of research. Before cutting or really doing anything with it, I just want to make sure it's safe. I've leaked tested and everything seems in check.

I cleaned the tip and took it to my local shop for inspection to get their blessing on the tip. The torch has built-in check and arrestors. With the cutting attachment and a 0 tip, I'm getting popping. Around every 5-10 seconds after introducing oxygen. I can get it to run smooth with a welding attachment but not with the cutting attachment. So I think I've isolated the problem to the cutting attachment as the handle/body seems to work with the welding attachment. I'm not sure what to go at next or if there's a troubleshooting protocol for this type of situation. I'm starting with 5psi working on the acetylene and 10-20 psi on the oxygen to start. The popping is not blowing out the flame and is not particularly violent but is enough to cause me concern as I don't believe I should have any popping. But I'm not sure since I'm new. What would be my next move?

Thank you.
 

Lefty

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Is it popping while your cutting or just whenever it is lit?
I haven't actually tried to cut with it yet. But it does pop when the cutting lever is depressed. No more or less than during a neutral flame. Kind of random every 5-10 seconds or so. It basically pops during any type of flame that includes any amount of oxygen. But again, I haven't tried to cut with it yet. I was just trying to get comfortable with it before I did anything.
 

A-one

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Like I said in another thread, I'm new to all of this myself. A Google search did turn up a couple of possible scenarios. Either something is dirty (tip, cutting attachment, clogged hose), or your pressures aren't correct for the tip that you're using. One possible scenario is the gauges might be a little off.
 

Gary Fowler

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You need to replace the o-ring seals on the cutting head. That will fix the problem. Your LWS should have them but take your heart medicine first so you dont have a heart attack when they tell you the price of each O-ring.
 

Lefty

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You need to replace the o-ring seals on the cutting head. That will fix the problem. Your LWS should have them but take your heart medicine first so you don't have a heart attack when they tell you the price of each O-ring.
My torch says "CA27-V". I contacted Airgas and they told me that they don't sell parts for Victor. Their corporate told me that it is a discontinued torch and they don't sell parts. When I asked if they could provide me with part numbers so I could at least find something on ebay, they stopped responding via email.

So I'm wondering if anyone knows if there is a difference between "CA27" and "CA27-V". I found some repair kits on ebay that say they are for model CA27. Does the "V" signify anything important?

It's not about the money. I'm happy to try. I'm just concerned about safety.

Thank you
 

Gary Fowler

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Not sure but V in welding equipment usually just signifies Valve. The O rings that you need are pretty generic for Victor torches. Internet should be your friend when looking for these.
 

Lefty

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Not sure but V in welding equipment usually just signifies Valve. The O rings that you need are pretty generic for Victor torches. Internet should be your friend when looking for these.
I'll check it out then. Thank you.
 

welding seabee

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Find the problem yet? Those little 10 CF tanks don't provide much flow. They are primarily used for light duty soldering, brazing, and welding. The flow it takes for cutting with the valve depressed is not available. Oxy will deplete real fast when cutting. Those sets are mostly used in the HVAC and Plumbing trades to do quickie jobs in tight places. High flow can suck the acetone absorbent out of the small tanks. You will know when that happens; black smoke and flame out. Goes for both the MC and B size tanks.

Ron
 
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