Product Manual

2-5

2.05 TERMS YOU SHOULD KNOW

BACKFIRE - The return of the ﬂame into the torch, producing a popping

sound. The ﬂame will either extinguish or reignite at the tip.

SUSTAINED BACKFIRE - The return of the flame into the torch

with continued burning within the torch. This condition may be

accompanied by a popping sound followed by a continuous hissing

or whistling sound.

FLASHBACK - The return of the ﬂame through the torch into the

hose and even into the regulator. It may also reach the cylinder. This

condition could possibly cause an explosion in the system.