The Decon Manifold System was designed as a reducing mechanism to be used in conjunction with a hazmat decon shower when the water source of decon water is from fire apparatus. The Decon Manifold System reduces a 1 1/2" fire hose down to a 3/4" outlet spigot. A garden hose can be then be run from the Decon Manifold System to the Decon Shower. Ship. wt. 13 lbs.