When performing the pressure control test, how much time should elapse between closing each flowing valve?

When performing the pressure control test, it is essential to wait for no less than 3 seconds and no more than 10 seconds between closing each flowing valve to ensure an accurate assessment of the system’s performance. This time allows for a proper stabilization of pressure readings after each valve is closed. Insufficient time elapsing between closing the valves could result in misleading data, as pressure fluctuations may not have settled, potentially leading to incorrect conclusions about the water supply system's capability and performance. This interval is critical, as it ensures that the operators have a clear and stabilized reading, which is vital for evaluating system pressure and determining if the mobile water supply can handle operational demands effectively.