The Betta will run on lower pressures, but it will also use more volume if it's available... making it even hotter than the Piranha. I love my Betta. It's so versatile. I sell quite a few as well. They are an awesome bead torch.
I'm putting about 12 LPM through it at 20 PSI and I'm getting even more range. If you have NG, I would highly suggest this torch... I don't have NG and I still love it!
