Master Plumber Practice Exam

Which of the following is NOT a reason for using sleeves in piping installations?

1. Preventing corrosion

2. Providing support

3. Protecting through walls

4. Maintaining temperature

The correct answer is: Maintaining temperature

Using sleeves in piping installations serves several important purposes, and identifying the functions is key to understanding their role in plumbing systems. Preventing corrosion is a crucial reason for using sleeves. They create a barrier between the pipe and its environment, especially in areas where moisture or chemicals may promote corrosion. Providing support is another significant function. Sleeves can stabilize pipes and secure them in place, reducing stress and potential damage, especially in long runs of piping. Protecting through walls is also a meaningful reason for the use of sleeves. They allow pipes to pass through walls safely, minimizing wear on the piping and preventing direct contact with surfaces that could lead to leaks or damage. While maintaining temperature could be beneficial in specific contexts, sleeves primarily serve to protect, support, and prevent corrosion rather than actively maintaining the temperature of the fluids inside the piping. Insulation would be a more relevant consideration for temperature maintenance, so this aspect does not constitute a typical function of sleeves in piping installations.