Hydraulic ventilation is an essential tactic for controlling interior conditions, and using the right nozzle pattern can make all the difference. The HEN® BLADE™ enhances both efficiency and safety by providing superior smoke removal without unnecessary disruption to the thermal layers.

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• Enhanced Smoke Ejection: 

  • The BLADE™ nozzle produces a high-velocity, rectangular stream that can be precisely shaped to match a window’s dimensions. This targeted stream enhances hydraulic ventilation by increasing standoff distance, maximizing water exit, and leveraging Bernoulli’s principle for more effective smoke removal.

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• Tactical Continuity—No Need to Switch Tools:

  • With its combination smooth bore stream, the BLADE™ enables crews to transition instantly from suppression to ventilation. This continuity minimizes tool changes, conserves time, and reduces operational complexity inside the structure.

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• Preservation of the Thermal Layer:

  • Traditional fog ventilation streams can disrupt the stratification of heat and gases, endangering crews and victims. The BLADE™ nozzles controlled application supports thermal stability by directing flow with minimal disruption to the upper gas layer, maintaining more tenable conditions for interior operations ​​

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Hydraulic ventilation is not just about pushing smoke—it's about applying physics and fluid dynamics to enhance visibility, reduce ambient temperatures, and protect crews from rapidly evolving interior hazards.