Attack Line Tool

Nozzle Reaction Calculator

Estimate reaction force for fog nozzles and smooth bore tips using common fire service formulas.

Inputs

Nozzle type

Flow (GPM)

Nozzle pressure (PSI)

Smooth bore diameter (in)

Training/reference aid only. Follow department SOPs, instructor direction, manufacturer data, and local conditions.

Results

Nozzle reaction

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Flow estimate

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Staffing caution

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Formula used

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Enter values and calculate.

Why nozzle reaction matters

Nozzle reaction helps instructors and officers talk about line selection, staffing, control, and safety. Smooth bore flow is estimated from bore diameter and nozzle pressure.