How Do Fire Hydrants Work?

You see them on nearly every street corner, but do you know how fire hydrants actually work? At Fire Shield Fire Protection, we maintain hydrant systems that Jacksonville firefighters rely on when seconds count.

• Bonnet: The top, often color-coded to indicate flow rate.

• Nozzle Caps: Protect outlets from debris.

• Barrel: The body that connects above- and below-ground parts.

• Stem & Valve: Internal mechanisms that open and close the water flow.

How They Operate

When firefighters attach a hose and open the bonnet with a hydrant wrench, the internal stem lifts the valve, releasing high-pressure water from underground mains.

Why Placement Matters

Hydrants are strategically placed by code for quick accessibility. Their location ensures firefighters can act fast to minimize damage.

Maintenance & Testing

Regular hydrant inspections are critical. Proper maintenance includes:

• Checking flow rates

• Inspecting for leaks or damage

• Lubricating moving parts

Fire Shield Fire Protection Hydrant Services

Our technicians provide hydrant testing, inspections, and 24/7 emergency service to keep Jacksonville’s communities protected. Contact us today to schedule a hydrant inspection.