DOUBLE OFFSET BALL MEMBER USABLE IN BALL VALVES AND OTHER FLOW CONTROL APPLICATIONS

摘要

Ball valves and ball valve components usable to control the flow of fluids and methods for manufacturing said ball valve components. Ball valves include a ball member comprising two curved segments of like shape and size, which are integrally joined and disposed symmetrically to one another relative to the axis of rotation of the ball member. A bore extends through the joined first and the second curved segments, wherein the first end of the bore is located on the first curved segment and the second end of the bore is located on the second curved segment. Each curved segment is disposed symmetrically to one another, relative to the axis of rotation. The area of separation, between the curved segments, defines shoulders of like configuration, wherein each shoulder is located symmetrically with respect to the other relative to the ball member's axis of rotation.

主权项

1. A ball member usable in a ball valve, the ball member comprising:
a first round segment; and a second round segment, wherein the round segments are offset from one another and integrally joined symmetrically to one another relative to an axis of rotation of the ball member, the ball member having a progressively changing radius with respect to the axis of rotation, the ball member having a bore extending therethrough transverse to the axis of rotation, the bore having a longitudinal axis, wherein the ball valve is opened and closed to fluid flow by rotating the ball member about the axis of rotation, and wherein rotation of the ball member progressively changes force of contact between the ball member and a ball valve seat.