There are two types of cutting torches. One is an injector torch. What is the other?

There are two types of cutting torches. One is an injector torch. What is the other?

• A. Positive pressure
• B. Preheating
• C. Neutral
• D. Oxidizing

Answer: (A)

Two torch designs differ by how the fuel gas is introduced into the flame. In injector torches, the oxygen stream creates suction that pulls the fuel gas into the mixing area, so the fuel is drawn in by the oxidizer flow. The other design is a positive-pressure torch, where the fuel gas is supplied under its own pressure directly into the mixing chamber, independent of the oxygen flow. This affects how you regulate and control the flame during cutting and is why both designs are taught as the two main categories. The other terms describe flame characteristics or procedures rather than how the torch delivers fuel.

Two torch designs differ by how the fuel gas is introduced into the flame. In injector torches, the oxygen stream creates suction that pulls the fuel gas into the mixing area, so the fuel is drawn in by the oxidizer flow. The other design is a positive-pressure torch, where the fuel gas is supplied under its own pressure directly into the mixing chamber, independent of the oxygen flow. This affects how you regulate and control the flame during cutting and is why both designs are taught as the two main categories. The other terms describe flame characteristics or procedures rather than how the torch delivers fuel.