Turbotorch swirl tip question

ChrisJ

SWEI said:

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JUGHNE said:

I use the "B" tank acetylene/air torch. The temperature of the tank will affect the gauge setting and operation a lot. The gauges are not high grade anyway.
I can gain about a 1/4 reading in cold weather by just bringing the tank inside to the job.

This is a big part of why we ditched acetylene for propylene a couple of years back. The reduction in uncertainty and complexity has measurable value IMO.

I had \ have no choice.
I need the heat for brazing and propylene isn't going to deliver.

SWEI

ChrisJ said:

I need the heat for brazing and propylene isn't going to deliver.

Have you actually tried it?

ChrisJ

SWEI said:

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ChrisJ said:

I need the heat for brazing and propylene isn't going to deliver.

Have you actually tried it?

Personally no, but going off of what everyone has told me, I'd need oxy mapp or oxy propane for brazing. If I was going to go through all that I'd do an oxy acetylene setup so at least I could also use it for cutting and welding. So I'd still be back to a B tank either way.

Also going off of what I've learned, even if you could braze with it, you'd need a much bigger tip for the same performance. That comes with drawbacks.

SWEI

In case anyone wants to try, the Uniweld FV600 will adapt a CGA200 (MC regulator) to a CGA600 (14oz disposable MAP/Pro or LPG cylinder.) They're fairly popular as a backup option.

ChrisJ

SWEI said:

In case anyone wants to try, the Uniweld FV600 will adapt a CGA200 (MC regulator) to a CGA600 (14oz disposable MAP/Pro or LPG cylinder.) They're fairly popular as a backup option.

Do you need to change anything else, or just swap that in with a tank and you're burning?

SWEI

That's it, at least for occasional use. Oh, and don't use your Grade R hose below -10°F ambient.

ChrisJ

SWEI said:

That's it, at least for occasional use. Oh, and don't use your Grade R hose below -10°F ambient.

If I'm brazing a monitor top when it's -10F or colder in the room I've got some serious issues.

What happens to the hose below -10F? Cracks?

SWEI

ChrisJ said:

What happens to the hose below -10F? Cracks?

Propylene stops vaporizing well, liquid can get into the line and degrade the liner. Grade T hose has a different liner that is resistant.

Note that (unlike acetylene) you actually can braze with propylene in ambient temps as low as -5°F.