The BB-4® is a high-pressure centrifugal pump that has been used by forestry agencies to combat wildfires for over 40 years. It has been the weapon of choice in many wildland operations and is especially suited for type 6 brush trucks. Available in portable and vehicle-mounted configurations, the BB-4® pump generates the high pressure required to overcome challenges that arise in difficult terrain. A unique feature of the BB-4® pump is the quick-release pump head that is interchangeable with the MARK-3®. This greatly reduces spare part inventories and allows for quick infield swap outs.