Question 78

Mechanically formed water supply tee fittings shall be constructed by brazing.

Brazing is the correct method for constructing mechanically formed water supply tee fittings, as it provides a strong joint suitable for plumbing applications.

A) soldering

Soldering is a process that uses a filler metal with a melting point below 450°C to join metals. While it can be used in plumbing, it does not provide the strength required for mechanically formed tee fittings, making it unsuitable for this specific application.

B) brazing

Brazing involves melting a filler metal above 450°C to join workpieces, creating a robust joint that can withstand high pressure and is ideal for plumbing systems. This method is specifically recommended for constructing water supply tee fittings due to its strength and durability.

C) flaring

Flaring is a mechanical process that creates a cone-shaped end on a pipe to allow for a tight joint with a fitting. However, it does not involve the joining of materials in the same way as brazing and is not applicable for constructing tee fittings.

D) chemically bonding

Chemically bonding refers to the use of adhesives or chemical agents to join materials. This method lacks the mechanical strength needed for water supply fittings, making it inappropriate for the construction of tee fittings.

Conclusion

Brazing is the only method among the options that ensures the strength and integrity required for mechanically formed water supply tee fittings. Soldering, flaring, and chemically bonding do not meet the necessary criteria for durability and pressure resistance, making them unsuitable for this specific application. Therefore, brazing is definitively the correct choice.