In the fire service, it is often believed that a smoothbore has the highest impact force or that it is the hardest hitting nozzle. You may love a good smooth bore, but did you know that impact force doesn’t actually depend on the type of nozzle?  

Which Firefighting Nozzle Has the Highest Impact Force? 

The impact force is determined by the amount of water moving and the velocity at which that water exits the nozzle. 

In this video, we summarize the findings from this technical bulletin and explain how testing was completed.