The single-action brass piston pump in the Pestrol Backpack Firefighter operates through a cycle of four main stages:

1. Intake Stroke: As the piston retracts within the cylinder, it creates a vacuum. This vacuum opens the inlet valve, drawing water from the tank into the cylinder.
2. Compression Stroke: The piston then moves forward, closing the inlet valve to prevent backflow. This forward motion compresses the water in the cylinder, increasing its pressure.
3. Discharge Stroke: As the piston continues moving forward, the pressure builds until it’s sufficient to open the outlet valve. The pressurized water is then forced out through the nozzle.
4. Return Stroke: The piston returns to its original position, completing one cycle. This process repeats continuously during operation.

The brass construction of the piston and cylinder ensures durability and smooth operation. The single-action design means that water is only pressurized and expelled during one direction of the piston’s movement. This results in a pulsed water flow, which can be advantageous for firefighting as it allows for controlled, powerful bursts of water.

The pump’s efficiency is maintained by tight tolerances between the piston and cylinder bore, typically a few thousandths of an inch, ensuring minimal water leakage during operation3. The adjustable nozzle on the Pestrol Backpack Firefighter allows users to switch between a concentrated jet stream for distance and a cone spray for wider coverage, enhancing its versatility in different firefighting scenarios.

Yes, the Pestrol Backpack Firefighter can hold both water and a mixed solution of water and fire-extinguishing additives. This flexibility ensures that you have the appropriate medium for different fire-fighting scenarios, providing optimal performance in tackling fires.

The manual stainless steel water gun on the Pestrol Backpack Firefighter has a direct shooting range of ≥10 meters, allowing you to tackle fires from a safe distance while maintaining control and efficiency.