Dosatron Water Powered Doser 40 GPM 1:3000 to 1:800 - D8RE3000 Unit Kit (Special Order) This is a kit that includes the Water Powered Doser and Starter Kit, Mixing Chamber Kit and Monitor Kit. Directly installed in the water supply line, the Dosatron operates by using water pressure as the power source (no electricty needed). The water activates the Dosatron, which takes up the required percentage of concentrate. Inside the Dosatron, the concentrate is mixed with the ... — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA. Note: the WA warehouse is moving in Jul & Aug, some orders may be delayed 1-2 days....more info.