A dispenser for obtaining a solution from a diluting product chemistry and a liquid, comprising: a housing; a cavity at least partially within the housing for holding the diluting product chemistry; a liquid source for providing the liquid to contact the diluting product chemistry to form the solution; a collection zone operatively connected to the housing to collect the formed solution; a diluting liquid source for providing diluting liquid to the solution in the collection zone; and a thermal valve assembly operatively connected to the diluting liquid source to automatically introduce varying amounts of diluting liquid to the collection zone based upon the temperature of the liquid to adjust the flow rate of the liquid to control the concentration of the solution, characterized in that the pressure of the liquid will not affect the amount of liquid therethrough, the thermal valve assembly comprising: a thermal actuator connected to a pressure body having a plurality of apertures, the pressure body at least partially surrounding the thermal actuator, the thermal actuator including a thermal shaft extendable therefrom; a spring piston connected to the shaft 73), the spring piston positioned adjacent a spring; and a piston sleeve at least partially surrounding the spring, the sleeve including a plurality of sleeve apertures, a phase change media within the thermal actuator to melt as the temperature of the first liquid rises causing the thermal shaft to extend; a pressure piston opposite the spring piston, the pressure piston being adjacent the upper end of the spring, and at least partially surrounding it, the piston being configured to be displaced in a downward manner if the pressure of the liquid increases and the piston closes off the radial sleeve apertures counteracting the effect of the pressure change. a housing; a cavity at least partially within the housing for holding the diluting product chemistry; a liquid source for providing the liquid to contact the diluting product chemistry to form the solution; a collection zone operatively connected to the housing to collect the formed solution; a diluting liquid source for providing diluting liquid to the solution in the collection zone; and a thermal valve assembly operatively connected to the diluting liquid source to automatically introduce varying amounts of diluting liquid to the collection zone based upon the temperature of the liquid to adjust the flow rate of the liquid to control the concentration of the solution, characterized in that the pressure of the liquid will not affect the amount of liquid therethrough, the thermal valve assembly comprising: a thermal actuator connected to a pressure body having a plurality of apertures, the pressure body at least partially surrounding the thermal actuator, the thermal actuator including a thermal shaft extendable therefrom; a spring piston connected to the shaft 73), the spring piston positioned adjacent a spring; and a piston sleeve at least partially surrounding the spring, the sleeve including a plurality of sleeve apertures, a phase change media within the thermal actuator to melt as the temperature of the first liquid rises causing the thermal shaft to extend; a pressure piston opposite the spring piston, the pressure piston being adjacent the upper end of the spring, and at least partially surrounding it, the piston being configured to be displaced in a downward manner if the pressure of the liquid increases and the piston closes off the radial sleeve apertures counteracting the effect of the pressure change. a thermal actuator connected to a pressure body having a plurality of apertures, the pressure body at least partially surrounding the thermal actuator, the thermal actuator including a thermal shaft extendable therefrom; a spring piston connected to the shaft 73), the spring piston positioned adjacent a spring; and a piston sleeve at least partially surrounding the spring, the sleeve including a plurality of sleeve apertures, a phase change media within the thermal actuator to melt as the temperature of the first liquid rises causing the thermal shaft to extend; a pressure piston opposite the spring piston, the pressure piston being adjacent the upper end of the spring, and at least partially surrounding it, the piston being configured to be displaced in a downward manner if the pressure of the liquid increases and the piston closes off the radial sleeve apertures counteracting the effect of the pressure change.