(under the class definition) Apparatus in which the pump or some part thereof (e.g., cylinder, bearing, drive motor) is cooled or lubricated by the feed or circulation of a separate fluid (i.e., not the pumped fluid), and means to control the flow of or modify a condition of said separate fluid (e.g.,
temperature), said means being operated by a separate sensing means which is responsive to a condition or a change of condition other than a manual control.
