How much psi does a 4 inch fire hose have?

A standard 4-inch fire hose typically operates at pressures ranging from 50 to 200 psi, depending on the specific application and requirements of the firefighting operation. However, it's common for larger hoses to be used at pressures around 100 psi for effective water delivery. Fire departments may adjust the pressure based on the situation, such as the type of fire or the distance to the water source.