What should piping system components for water systems be sized for?

The correct choice is focused on the demand of the system, which refers to the actual requirements for water flow and pressure that will be needed during operation. Properly sizing piping system components for water systems according to demand ensures that the system can deliver the necessary water volume while minimizing energy loss and maintaining efficiency.

When the sizing complies with the demand, it helps prevent issues such as inadequate flow, increased pressure losses, and potential over-sizing that can lead to additional installation and operational costs. The key is to match the system’s capacity with the expected usage patterns, ensuring both performance and efficiency.

Sizing solely based on maximum potential flow might not take into account the actual use scenario, which can lead to inefficiencies and unnecessary oversizing. While planning for future expansion is essential in some cases, it should not overshadow the immediate demand requirements. Also, focusing only on the supply line neglects the other crucial components of the piping system that contribute to overall performance and efficiency.