Configuration OD (overdrive) can increase the throughput of the system without affecting the quality of water. With this configuration, during a working cycle, the water flow passes both filter columns simultaneously, increasing throughput and reducing the pressure loss at the outlet of the system. During regeneration, one filter column remains in operation, and the other through a cycle of recovery. When the cycle is complete, the work re-enter the two columns. Short-term reduction of capacity at the time of regeneration usually without inconvenience to the consumer. 

Specifications