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 involves joining metals through the use of a filler metal that has a melting point above 450 °C (842 °F), allowing for strong and durable connections in plumbing systems.

A) soldering

Soldering is a method that uses a filler metal with a lower melting point than brazing, typically below 450 °C (842 °F). While soldering can create effective joints in plumbing, it does not provide the same strength and temperature resistance as brazing, making it less suitable for mechanically formed water supply tee fittings.

B) brazing

Brazing is the appropriate technique for the construction of mechanically formed water supply tee fittings. This method ensures a robust bond that can withstand high pressures and temperatures, which is essential for the longevity and reliability of plumbing systems.

C) flaring

Flaring involves shaping the end of a pipe to create a mechanical joint but does not involve melting or joining materials with a filler metal. This method is not applicable to water supply tee fittings, which require a more permanent and strong connection than flaring can provide.

D) chemically bonding

Chemically bonding refers to joining materials at a molecular level, often using adhesives. While this method can be effective for certain applications, it does not provide the structural integrity needed for water supply fittings, making it unsuitable compared to brazing.

Conclusion

Brazing is the best method for constructing mechanically formed water supply tee fittings due to its ability to create strong, high-temperature joints. Other options like soldering, flaring, and chemically bonding do not meet the necessary criteria for strength and durability required in plumbing applications, solidifying brazing as the superior choice.