Which application is not suitable for ABS pipe in plumbing?

ABS (Acrylonitrile Butadiene Styrene) pipe is a commonly used material in plumbing, particularly for its ease of installation and resistance to impacts and corrosion. However, it has certain limitations regarding temperature resistance.

When it comes to hot water distribution, ABS pipes are not suitable due to their inability to withstand high temperatures. For example, temperatures above 180°F can lead to the softening of ABS, potentially causing leaks or system failures. This limitation renders ABS ineffective for applications that involve the transport of hot water, making it inappropriate for uses like hot water distribution systems.

On the other hand, ABS pipe is well-suited for above-ground drain, waste, and vent (DWV) systems, soil and waste discharge applications, and condensate lines, as these applications typically experience lower temperature variations that ABS can handle effectively. By understanding these properties, it becomes clear why this particular application is at odds with the material's performance capabilities.