(under subclass 87.01) Subject matter wherein the sensor is detecting the variation in an uppermost horizontal surface of the liquid in one of the flow lines and in response thereto the sensor controls the flow in the other flow line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
101.25, for a self-proportioning flow system with liquid level sensing.
386+, for a liquid level responsive means without proportionate or correlated flow.
