Fluid handling – Liquid level responsive or maintaining systems – By float controlled valve
Patent
1998-01-21
1999-11-30
Walton, George L.
Fluid handling
Liquid level responsive or maintaining systems
By float controlled valve
137 85, 137270, 137413, 137415, 137416, 137426, 137434, F16K 3134
Patent
active
059924489
ABSTRACT:
A liquid level controller is shown having a housing with a rear wall. A shaft has a first end which extends through the rear wall to a liquid displacement member located within a liquid containing vessel. A second end of the shaft joins a pair of oppositely extending arms. Each of the oppositely extending arms is rotationally mounted on the housing generally parallel to the rear wall in a bearing. Vertical forces responsive to changes in liquid level act on the displacement member and are transmitted as a force tending to rotate the oppositely extending arms. A lever pivotally mounted to the housing is interconnected with a torque bar which, in turn, connects to the oppositely extending arms of the shaft. A valving assembly is engaged by the lever to provide an output for controlling liquid level within the vessel. The valve assembly includes a pneumatic pilot with a contact point which is engageable by a pin carried on the lever. Movement of the torque bar is transmitted through an adjustment member to the lever pin, whereby movement of the lever actuates the pneumatic pilot.
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Anderson R. David
Winfrey Carl Wayne
Winfrey Randal Alan
Gunter Charles D.
Walton George L.
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