Patent ID: 8881767
Filing Date: 2014-11-11
Classification: F16K,Y10T

Abstract:
1. A ball valve, comprising: a valve body defining a valve chamber and a flow path between a valve inlet and a valve outlet; a ball member positioned in the valve chamber and defining first and second internal passages in fluid communication, the first passage defined through the thickness of the ball member and the second passage extending between a sidewall of the first passage and a surface of the ball member; and first and second seat rings positioned axially in the valve chamber on opposite sides of the ball member, the first seat ring permitting fluid flow between the first seat ring and the ball member and the second seat ring for fluid-sealing engagement with the ball member; wherein the ball member is selectively rotatable between a first operating position in which no fluid flow occurs through the flow path, a second operating position in which fluid flow occurs through the first passage, and a third operating position in which fluid flow occurs through the second passage.