Hydraulic ventilation is a critical tactic for controlling interior conditions during firefighting operations. Using the right nozzle pattern can make all the difference. The HEN BLADE nozzle enhances efficiency and safety by delivering superior smoke removal without disrupting thermal layers.

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• Enhanced Smoke Ejection: 

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

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• Tactical Continuity—No Tool Changes Needed:

  • With its combination smoothbore stream, the BLADE allows crews to transition instantly from fire suppression to ventilation, reducing tool changes, saving time, and simplifying operations inside the structure.

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• Preservation of the Thermal Layer:

  • Unlike traditional fog streams that disrupt heat and gas stratification, the BLADE nozzle maintains thermal stability by directing flow with minimal disturbance to the upper gas layer. This creates safer, more tenable conditions for interior crews.

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Hydraulic ventilation isn’t just about pushing smoke—it’s about applying physics and fluid dynamics to improve visibility, reduce ambient temperatures, and protect firefighters from rapidly evolving hazards.