Question 72

Brass adapter is used to make a joint between copper tubing and threaded galvanized steel pipe.

A brass adapter serves as a fitting that allows the connection of copper tubing to threaded galvanized steel pipe, accommodating the differences in materials and ensuring a secure joint.

A) Mechanical seal

A mechanical seal is primarily used to prevent leakage in rotating equipment and is not designed for joining copper tubing to galvanized steel pipe. Therefore, it is not an appropriate choice for this application.

B) Brass adapter

A brass adapter is specifically designed to connect dissimilar materials, such as copper and galvanized steel. It provides a reliable, leak-proof connection between the two types of piping, making it the correct option for this situation.

C) Brazing

Brazing is a process used to join metals by melting a filler metal above 450°C. While it can be used for copper, it is not typically used for creating joints with threaded galvanized steel pipe, making it less suitable than a brass adapter.

D) Welding

Welding involves melting the base materials to join them together, which is not applicable when connecting copper tubing to galvanized steel pipe due to the differences in melting points and the risk of damaging the materials. Therefore, it is not a viable option.

Conclusion

The brass adapter is the most effective solution for connecting copper tubing to threaded galvanized steel pipe, as it provides compatibility and ensures a secure joint. Other options, such as mechanical seals, brazing, and welding, either do not fit the application or could compromise the integrity of the connection.