This is a demo of the 45mm fire hose in action, using a Akron branch. This branch has the following settings, 50, 100, 150, 230 litres. This Akron 1772 branch is a great bit of kit, as you control the amount of litres that are delivered through the branch, meaning you can make your water last longer but increase the flow whenever necessary. JM Fire and Rescue. For all your event and commercial fire needs, get in touch.