Hose Clamp

What Is Hose Clamp?

A hose clamp is a mechanical lever or hydraulic scissor device applied to an unpressurized or pressurized supply/attack hose line to temporarily shut off water flow without turning off the engine pump or hydrant.

Why Hose Clamp Matters on the Fireground

Hose clamps allow crews to insert additional hose lengths, replace a burst section of hose, or switch appliances near the nozzle without forcing the pump operator to shut down the main discharge, saving critical operational time.

Relevant NFPA Standards

• NFPA 1900: Standard for Aircraft Rescue and Firefighting Vehicles, Automotive Fire Apparatus, Wildland Fire Apparatus, and Automotive Ambulances

Field Procedures & Tactical Steps

1. Place the hose clamp on the flat hose section approximately 20 feet behind the supply intake or nozzle break point.
2. Step onto the clamp foot pedal or turn the mechanical screw lever until the hose is completely pinched shut.
3. Lock the clamp mechanism securely in place before performing hose section additions or repairs.
4. Re-connect hose section or appliance, ensuring all couplings are hand-tightened with spanner wrenches.
5. Release the hose clamp slowly while standing to the side to avoid sudden water hammer or handle kickback.

Common Context & Application

Applied on supply hose (LDH) near the hydrant or attack lines during line extension and burst hose replacement procedures.

Frequently Asked Questions about Hose Clamp