What is the minimum pressure required for a hydrant to be operable?

The minimum pressure required for a hydrant to be operable is 20 psi. This standard is crucial because it ensures that there is sufficient pressure for firefighting operations. Firefighters rely on hydrants to provide a quick and adequate supply of water during emergencies, and a pressure below this threshold may result in insufficient flow rates to effectively combat a fire.

At 20 psi, the flow can typically support the necessary firefighting efforts, allowing for effective water delivery through hoses. Lower pressures may lead to inadequate water supply, hampering firefighting efforts and potentially putting lives and properties at greater risk. Knowing this information is essential for firefighters to gauge whether a hydrant can be relied upon in an emergency situation.