| 摘要 |
A mixing valve having two different fluid inputs and at least one fluid outlet. The fluid inputs are adapted to be coupled to the fluid outlet in variable proportions according to mix ratio data provided by a controller means. An electric motor operated gear box is adapted to be coupled to the operating shaft of the mixing valve. A sensing probe is mounted in communication with the mixing valve outlet fluid and is adapted to be coupled to the controller means. Optional, electrically operated fluid solenoids are adapted to be coupled to the controller means. The controller means is provided with an output for switching the switching device between its first, second or third states in a predetermined sequence for inducing a polarity conditioned voltage signal. The power supply and dry cell battery are coupled to the AC mains for supplying a low-voltage, supply to the controller means.
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