| 摘要 |
A control valve assembly (10) controls the flow of water to and from a treatment tank (16) and the regeneration of the treatment material therein. A housing of the valve assembly includes connections for a tank inlet and tank outlet, an inlet chamber (60), outlet chamber (34), a pressure-operated inlet valve (24) and an outlet valve (32). A pair of venturi chambers (81a, 81b) are configured to provide co-current and counter-current regeneration. A subsystem includes a turbine (104) and a nozzle. An external port (130) receives fluid to to drive the turbine in order to initiate regeneration. The inlet valve (24) has dual seating surfaces for controlling the communication between the inlet chamber, transfer chamber (70), a bypass chamber and tank inlet (26). The bypass chamber may receive a blocking wall for blocking communication between the chamber and the outlet. |
