Abstract: A combination of 3 ball valves which empty the hot water line of cold water, that line being the line which is from the hot water heater source to a desired faucet. A faucet being any location where hot water is desired without wasting water that is cold in the hot line. To not waste water to achieve hot water, the cold water in the hot line is used to fill the bathroom stool when it is flushed. The invention allows by adjustment a setting to let cold water to combine with the cold from the hot line to have a measured amount of water to complete the fill of the tank of a bathroom stool. The invention of ball valve combination can be installed with water lines in its entirety in a bathroom when no access is available to the location of the hot water source. The only additional line needed is a tube or pipe from the invention at the stool to a T located at the sink area or shower tub area of the faucet A power source such as electric is not necessary for installation or operation.