Runxin control units are designed to switch water flows inside the filter housing with granular loading. 

Three-cycle models (filter control units) allow switching between the following modes: filtration, backwashing of the load, washing of the load with a direct stream of water. Five-cycle models (softener control units) allow you to switch between the following modes: filtration, backwashing of the load with a stream of source water, regeneration of the load with a reagent coming from the tank using a built-in injector, cleaning the load from excess reagent, filling the tank with water to prepare the regenerating solution.