(under the class definition) Apparatus including a passage connected to be supplied with both a heating fluid and a fluid to be heated and flow control system for the two fluids having structure by which the flow of one fluid is controlled by the same actuator as the other fluid or is made dependent upon the actuation of the other controller.
SEE OR SEARCH THIS CLASS, SUBCLASS:
39, for condition responsive selection or load balancing of furnace exhaust heated regenerators.
40, for condition responsive control of a hot blast stove.
51+, for a control system for heating structure including a timing, programming or cycling means.
SEE OR SEARCH CLASS
137, Fluid Handling, 309+, for a reversing valve, per se, of the regenerative furnace type.