FullFloXF high performance valve has near zero pressure loss across the valve which significantly reduces the amount of energy required by a filtration system. Depending on your utility rates, this valve could save you hundreds of dollars per year when compared to a typical backwash valve. The FullFloXF backwash valve easily retrofits to Triton®, Quad D.E.®, FNS® Plus, System 3, and System 2 Mod D.E. Filters.