Bernzomatic JTH7 High Temperature Torch
I just bought the Bernzomatic JTH7 High Temperature Torch at Home Depot.
I’ve been working in my cold garage (20 degrees Fahrenheit) sweating copper. The central blue flame on the “regular el cheapo” propane torch varied in length from ¾ of an inch to about 3 inches. I presume it’s because of the cold and the orientation of the propane bottle. I also had the flame go out on me several times (there's no wind in the garage) because I tried to heat joints by pointing the flame down.
So I purchased the Bernzomatic JTH7 High Temperature Torch figuring that since the box said that it is “pressure regulated and can point in all directions” that I would give it a try.
Well, I tried it. Stupidly, I tried it on a piece I was working on. Man, that (propane) flame was HOT. It turned the half-inch joint to toast.
I’m pretty sure that I’m using the JTH7 incorrectly. Nonetheless, assuing the one I have isn’t defective, it works very differently than the “el cheapo” Bernzomatic that I’m used to. The flame is much more spread out and does not have a “point” on a center blue section the way I’m used to on a high school Bunsen burner or the “el cheapo” Berzomatic tip.
Anyone use the JTH7? Do you like it?
Try the JT680 propane tip
I tried it with similar results. I concluded that it's really designed for MAPP. Copper sweating is more delicate than that thing allowed.
If I were you, I'd just get a larger propane tip (Bernzomatic JT680). It won't burn hotter than the regular pencil tip, but it burns larger, so in a cold environment, you can heat an entire joint more effectively.