What happens to the size of the tip orifice as the number of a gas torch tip increases?

As the number of a gas torch tip increases, the size of the tip orifice tends to get larger. This design is intentional, as a higher number typically indicates a larger fuel flow requirement, which necessitates a wider orifice for effective combustion. Larger orifices facilitate a greater volume of gas to escape, allowing for more heat output, which is crucial when brazing or welding tasks that require significant heat.

Additionally, with an increased orifice size, the torch can accommodate different types of operations. For instance, a larger tip orifice allows for a broader flame, which is useful for heating larger surfaces or in applications where a more aggressive flame is needed.

In contrast, smaller orifices are designed for fine detail work or for operations that demand precision with less heat output. So, as torch numbers increase and the applications become more demanding, the corresponding size of the tip orifice must also increase.