Patent ID: 7093608

Claim:
A water flushing system comprising: a flow controlled passage for pressurized water having an inlet adapted for fluid connection to a subterranean pressurized water distribution system located below the frost line of the ground; a flow control valve disposed along the flow controlled passage for permitting and prohibiting the flow of pressurized water through the flow controlled passage and into a discharge conduit, the discharge conduit having an outlet for discharging the pressurized water; a programmable electronic controller for controlling the flow of pressurized water through the flow controlled passage by activating and deactivating the flow control valve, the controller including a programmable microprocessor system for storing instructions for activating and deactivating the flow control valve; a t-fitting having a first end, a second end and a third end, the first end being connected to the flow control valve, the second end of the t-fitting being connected to supply tubing, and the third end being connected to the controller, the t-fitting being adapted to allow a portion of the pressurized water at the flow control valve to flow into the supply tubing, wherein the supply tubing routes the water to a temperature control valve, the temperature control valve being responsive to the temperature of the water in the supply piping, wherein the temperature control valve is closed when the temperature of the water in the supply piping is above a first predetermined temperature, wherein the temperature control valve is at least partially open when the temperature of the water in the supply piping is at or below the first predetermined temperature, thereby allowing pressurized water to pass through the temperature control valve and into exit tubing, the exit tubing extending from the temperature control valve to the discharge piping, wherein a portion of the exit tubing wraps around at least a portion of the controller, whereby the passage of above freezing water from the water distribution system prevents the controller and the supply tubing from freezing.