Water controller

A system for producing a single substantial stream of water in a measured amount and at a pre-determined temperature from at least three water sources, one of said sources being tap water whose temperature is substantially uncontrolled and the other two of said sources having means for producing water at a pre-determined temperature, said pre-determined temperatures being substantially different, said three water sources each having an output line plumbed into a single supply pipe, said system including a programmed logic device, a flow meter in said supply pipe with an output connected to said logic device, a temperature sensor in said supply pipe with an output connected to said logic device, a valve means in each water source output line for controlling the flow of water from its associated water source into said supply pipe, said valve means' being connected to and controlled by said logic device so that said logic device can monitor the temperature and flow rate of water in said single supply pipe and control the input of water from said three sources to thereby supply a measured amount of water at a pre-determined temperature said logic device having means for limiting the inrush of water from said sources by staging the opening of said valve means'.