What is the minimum intake pressure recommended for the next engine in a water relay operation?

The minimum intake pressure recommended for the next engine in a water relay operation is 20 PSI. This pressure is significant for ensuring that water flows effectively through the pump and maintains the necessary pressure to overcome the friction loss in the hoses and piping during the relay.

A minimum of 20 PSI allows the pump to efficiently operate, ensuring water is delivered at an adequate pressure to the next engine in the relay system. This is particularly important in ensuring that the water supply remains consistent and reliable, especially over longer distances where pressure losses can occur. Understanding this pressure requirement is critical for driver engineers to maintain operational effectiveness and support firefighting efforts.