Performance
Reg-U-Flo^® Vortex Valve out-performs conventional flow control devices. Its unique S-shaped head/discharge curve, which has been devised from extensive systematic modelling and field testing, comprises two distinct phases. As the head increases, a transition takes place from free flow (lower portion of the curve) to vortex controlled flow (upper portion of the curve).

The Reg-U-Flo^® Vortex Valve thereby achieves maximum design discharge rates at lower heads than conventional controls. As a result, storage requirements are reduced by up to 30%, (as shown in the hydrograph opposite) significantly reducing project costs.