Abstract: An electronic flow meter having sensors to determine the temperature and flow rate of a fluid flowing through the flow meter and into a downstream circuit, such as a cooling water circuit, of known diameter is flowing under turbulent or laminar conditions based upon a calculation of a corresponding Reynolds number and comparison of the calculated Reynolds number to Reynolds numbers indicative of the desired flow characteristic. A display is provided to indicate the flow characteristic of the fluid flowing through the flow meter as determined by the processor.

Abstract: An electronic flow meter having sensors to determine the temperature and flow rate of a fluid flowing through the flow meter and into a downstream circuit, such as a cooling water circuit, of known diameter is flowing under turbulent or laminar conditions based upon a calculation of a corresponding Reynolds number and comparison of the calculated Reynolds number to Reynolds numbers indicative of the desired flow characteristic. A display is provided to indicate the flow characteristic of the fluid flowing through the flow meter as determined by the processor.

Abstract: A rotary disc valve is disclosed which generally includes a housing having an inlet side and an outlet side, and a disc rotatably mounted within the housing between the inlet side and the outlet side thereof. The disc includes an outlet bore which is generally aligned with the axis of rotation of the disc and extends from the outlet face of the disc partially through the disc. One or more inlet bores spaced radially outwardly from the axis of rotation of the disc extend from the inlet face of the disc partially through the disc and communicate with the outlet bore. The inlet bore or bores are located such that a bore may be selectively brought into communication with a single one of inlet side passages by rotating the disc until the bore is aligned with the desired passage. Since the outlet bore and an outlet passage are aligned along the center of rotation of the disc, the outlet bore stays in constant communication with the outlet passage in the outlet side of the housing as the disc is rotated.

Abstract: A quick connect coupler for connection to a stud includes a female coupler body having a plurality of balls in ball receiving bores which are advanceable into a stud bore in the female coupler for engaging a stud upon advancement of the stud into the stud bore. The balls are held in engagement with the stud by a locking collar having an annular groove. The female coupler is disengaged from the stud by pressurized air acting against a plunger mounted within the stud bore and connected to the locking collar to drive the locking collar forward such that the annular groove is advanced into alignment with the ball receiving bores in the female coupler body. A blocking sleeve is mounted on a plunger shaft and biased forward to slide across the ball receiving bores as the stud is withdrawn to hold the balls out of the stud bore.