FOL-DA-TANK® Company manufactured the first floating strainer in 1954 and started selling them in 1955. The Float-Dock® proved to be the most practical answer not only for firefighting but also for construction and mining operations. The Float Dock® strainer is a valuable piece of equipment that can save the day in many firefighting situations. Float Dock® lets you use the water in farm ponds or streams, both shallow and deep, and with a Fol-Da-Tank. Because it operates below scum and debris and above sand and muck, it screens out the materials that wear out impellers, packing and bearings. Since Float Dock® strainers are self-leveling, there are no whirlpools or suction loss. Each unit is fully guaranteed. (NFPA 1142 Compliant)