Figure 5-3.Mixing head for the low-pressure torch.
Figure 5-4.Equal-pressure welding torch.
A typical equal-pressure welding torch, also called
Welding TIPS and MIXERS are designed in several
a general-purpose torch, is shown in figure 5-4. The
ways, depending on the manufacturer. Some torch de-
medium-pressure torch is easier to adjust than the low-
signs have a separate mixing head or mixer for each tip
pressure torch and, since equal gas pressures are used,
size. Other designs have only one mixer for several tip
you are less likely to get a flashback. (Flashbacks are
sizes. Tips come in various types; some are one-piece
covered in chapter 4.)
hard-copper tips and others are two-piece tips that