What common issue can occur with PVC piping in high-temperature applications?

In high-temperature applications, PVC piping is particularly vulnerable to softening and losing its structural integrity. This is primarily due to the nature of PVC as a thermoplastic material, which means that its mechanical properties are significantly influenced by temperature. When exposed to elevated temperatures, the molecular structure of PVC begins to transition, causing it to lose rigidity.

As a result, the piping can become soft and may deform under pressure or stress, leading to potential leaks or failures within the piping system. This phenomenon makes it crucial for pipefitters and installers to consider temperature ratings when selecting piping materials for specific applications, ensuring that they choose the appropriate type of pipe that can withstand the operating conditions without compromising safety or performance.

Other choices highlight different issues related to PVC, but in high-temperature scenarios, the softening effect is the most critical concern to address. Understanding this characteristic helps ensure the longevity and reliability of piping systems in environments where thermal stress is a factor.