The Tideflex Mixing System (TMS) eliminates short-circuiting and water stagnation and achieves complete mixing in water storage tanks. It has a check valve originally created to solve backflow problems in outfall pipes, but since developed into a variable-orifice inlet nozzle that provides superior mixing characteristics. When used in the TMS, variable-orifice nozzles optimize jet velocity at all flow rates and discharge an elliptically shaped jet, which produces rapid and complete mixing that improves water quality. The TMS also separates the inlet and outlet with one manifold pipe so short-circuiting is eliminated. 800/756-0044; www.tideflex.com.