Abstract
A mixing valve, the mixing valve comprising: a first fluid flow window; a second fluid flow window; a first plate corresponding to the first fluid flow window; and a second plate corresponding to the second fluid flow window; wherein the first plate is at least partially located within a passage defined by and extending through the second plate and wherein the plates are independently moveable; wherein moving the first plate controls a first aspect of the fluid; and wherein moving the second plate controls a second aspect of the fluid.