What are the maximum and minimum pressures allowed in a water distribution system?

The correct choice outlines the acceptable pressure range within a water distribution system, which is vital for ensuring both functionality and safety. In plumbing systems, too low a pressure can lead to inadequate water supply and insufficient flow rates at faucets, showers, and other fixtures. Conversely, excessively high pressure can cause pipe damage, leaks, and stress on fixtures.

The range of a minimum pressure of 50 kPa helps to ensure that water can adequately reach fixtures and provides an acceptable flow rate for various uses. A maximum pressure of 550 kPa is generally set to prevent issues related to over-pressurization, which can lead to failures in pipe connections, potential hazards, and other plumbing system failures.

Understanding these pressure limits is essential for plumbers, as they must design and maintain systems that operate safely within these parameters to ensure reliable performance and longevity of the system.