New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

What is the suggested maximum allowable working pressure for 1/4 inch nylon tube?

1. 500 PSI

2. 710 PSI

3. 810 PSI

4. 900 PSI

The correct answer is: 810 PSI

The suggested maximum allowable working pressure for a 1/4 inch nylon tube is 810 PSI. This pressure rating is determined based on the material properties of nylon as well as the tube's dimensions. Nylon tubes are commonly used in various applications due to their flexibility, light weight, and resistance to a range of chemicals, which makes them suitable for different environments. Understanding the pressure rating is crucial for ensuring safe operation within a piping system. If the pressure exceeds the maximum allowable working pressure, the risk of failure, such as ruptures or leaks, significantly increases. Therefore, it is essential for pipe fitters to select materials that meet the pressure requirements for their specific applications, taking into account factors like temperature, type of fluid, and overall system design. Knowing the correct maximum allowable working pressure helps in making informed decisions about the suitability of nylon tubing in specific situations, thereby ensuring effective and safe use in piping systems.