How does the pressure rating of 100 PSI for hot water distribution pipes ensure safety?

The pressure rating of 100 PSI for hot water distribution pipes is primarily in place to ensure safety by preventing pipe bursting. Pipes that are rated for a specific pressure, such as 100 PSI, are designed to withstand the internal pressures that occur during normal operation and fluctuations, especially when dealing with hot water. If the internal pressure exceeds the pipe's rating, there is a significant risk of failure, which can lead to bursting. This can cause not only property damage but also potential injury to individuals nearby due to the sudden release of high-pressure water.

In contrast, factors such as energy efficiency, water taste, or the need for water heaters are not directly influenced by the pressure rating of the piping. These elements are governed by other aspects of plumbing design and system operation rather than the capacity of the pipes to safely handle pressure. Therefore, the emphasis on a 100 PSI rating is fundamentally about maintaining the structural integrity of the plumbing system and ensuring it operates safely under expected conditions.