Patent ID: 9476509
Filing Date: 2016-10-25
CPC Classification: F16K,G01F,G05D,Y10T

Claim Text:
1. A valve comprising: a valve body, an inlet end, and an outlet end, and a bore extending through the inlet end, the valve body, and the outlet end, said valve body defining a longitudinal axis of the valve; a first disk disposed within the valve body, disposed perpendicularly to the axis, said first disk have a first aperture through which fluid can flow, said first disk being rotationally fixed to the valve body; a second disk disposed within the bore of the valve body, disposed perpendicularly to the axis, said second disk have a second aperture through which fluid can flow, said second disk being rotatably disposed within the valve body; a post extending through a slot in the valve body, secured to the second disk, whereby second disk may be rotated within the valve body by movement of the post through the slot; and a Venturi disposed within the bore of the valve body, a low pressure sensing port communicating from a low pressure region of the Venturi to a first PT port disposed on the valve body, and a high pressure sensing port communicating from a high pressure region of the Venturi to a second PT port disposed on the valve body.