What is the flow rate (GPM) and nozzle pressure (NP) for a 1 3/4" master stream tip?

The flow rate and nozzle pressure for a 1 3/4" master stream tip are based on established standards and guidelines found in fire service training materials. For a 1 3/4" master stream, the typical flow rate is approximately 800 gallons per minute, with a nozzle pressure of around 80 psi. This combination is commonly used because it provides an effective and efficient way to deliver water in a firefighting scenario, balancing the need for sufficient volume (for extinguishing fires) with manageable pressure levels that allow firefighters to operate the equipment effectively.

Firefighters and engineers rely on these specifications because they ensure that the nozzle operates within its capabilities while providing optimal fire suppression effectiveness. In practice, maintaining the correct nozzle pressure allows for proper reach and dispersion of the water stream, essential for combating various types of fires.

Other options presented either represent flow rates or pressures that diverge from this standard, making them less suitable for the specific operational characteristics of a 1 3/4" master stream. This ensures that the correct calculation and understanding of flow rate and nozzle pressure is critical for effective firefighting operations.