What is the usual pressure range at the delivery point in a water system?

The correct answer reflects the typical pressure range at the delivery point in a water system, which is generally established within a context of ensuring reliable water flow for fire suppression and other municipal uses. A pressure range of 20-80 psi is commonly suitable, as it allows for effective water delivery while maintaining the necessary pressure to ensure that firefighting equipment and appliances can function properly.

In fire protection systems, enough pressure is essential to overcome friction losses in hoses and the elevation of the water source, ensuring that firefighters have sufficient water pressure to combat fires effectively. This range encompasses both adequate pressure for creating necessary flow rates and the ability to manage various operational demands in municipal water systems.

A range that is too low might not provide enough pressure for effective firefighting tactics, while a range that is excessively high could lead to equipment damage or inefficiencies in the system. Overall, the selected range of 20-80 psi aligns with industry standards for adequate delivery of water in emergency situations.