Which handline carries GPM's up to 350?

The handline that typically carries gallons per minute (GPM) flow rates up to 350 is the 2 1/2-inch handline. This size is commonly used in firefighting operations to deliver a substantial amount of water needed for aggressive fire suppression, especially in larger structures or high-hazard situations.

The larger diameter of the 2 1/2-inch handline allows for a higher volume of water to flow compared to smaller handlines, which helps in effectively fighting fires that generate significant heat and require more water for extinguishment. Handlines like the 1-inch are limited in capacity, making them suitable for smaller fires or fire prevention, while the sizes above 2 1/2 inches, such as 3-inch and 4-inch, are typically used for supply lines rather than handlines, which are intended for direct attack on fires.

Understanding the flow capabilities of different handlines is crucial for firefighters, as it helps in selecting the right equipment for the fire scenario at hand.