Effective pinch drainage: EcoFlow Control by GRAF

The EcoFlow Control uses a flexible membran to regulate the outlow. This ensures precise control, regardless of the water level. 

Compared to a static throttle system, the EcoFlow Control is characterised by its excellent performance. Due to the steep rise in the characteristic curve and the resulting constant drain value, an efficiency of over 80 per cent is achieved. This high level of efficiency often results in a significant reduction in the required retention volume.