Fixed-Tooth vs. Spinning Tooth

Video Transcription: Fundamental question that we always get is what's the difference between a spinning tooth nozzle and a fixed tooth nozzle? Lower nozzle picture is a spinning tooth Thunderfog, 150 gallon a minute, 100 PSI in a very wide fog pattern. Notice the fog pattern is very translucent, very small droplet size, but a very wide pattern. The nozzle on the top is the fixed tooth rubber bumper TFT Mid-Force. Again, same flow rates, but the stream is not opened up into a full fog pattern at this time.

It's a very good example of showing you the difference between the density of the fog pattern between the fixed tooth and the spinning tooth nozzle.

Video Transcription: What you're trying to do is hold the fire in check until you can valve it out. But it's very important that you understand the difference between these two nozzles because you never want to use these two nozzles together at the same time. The fundamental difference is the spinning tooth nozzle is actually pulling the products of combustion towards the nozzle, and then it's deflected out with a wide fog pattern. In the fixed tooth nozzle, we have a fully fog filled pattern, which is easy for me to say, but there's actually a cone of water that's continuing to push the products of combustion away from us. During that time, if you're not real careful, if you get right up to the leak itself, you can extinguish the fire before it's time.