Model 240 utilizes the cooling, soaking and penetrating effect of a 45-55 ft. stream of WATER. The 50 sec. discharge time makes it very effective for inexperienced operators for use on Class A fires. Protect from freezing by adding the Model 506 Loaded Stream/ Antifreeze charge. In areas with a high level chloride content water, it may be corrosion protected by using the Model 507 charge.