| 摘要 |
A control valve assembly (10) controls the flow of water to and from a treatment tank (16) and the regeneration of the treament material therein. A housing of the valve assembly includes connections for a tank inlet and tank outlet, An inlet chambers (60), outlet chamber (34), a pressure-operated inl et valve (24) and an outlet valve(32). A pair of venturi chambers (81a, 81b) ar e configured to provide co-current and counter-current regeneration. A regeneration control subsystem includes a turbine (104) and a nozzle impingi ng thereon to produce rotation. An external port (130) receives fluid to provid e a driving for the turbine in order to initiate regeneration. A bypass chambe r (60) communicates with the inlet chamber (15). The inlet valve (24) has dual seating surfaces for controlling the communication between the inlet chamber , transfer chamber (70) and tank inlet (26). |
