Abstract This ball valve includes a body having a rotatable ball mounted between inlet and outlet ports said ball being provided with a conduit, alignable with said ports when the valve is in the open position. A rotatable flow control element is mounted within the conduit to regulate flow through the conduit when the valve is in the open position. A first actuating key is mounted in the body for engagement with the ball to provide rotation of said ball between the fully opened and fully closed positions and a second actuating key is mounted in the body for engagement with the flow control element to provide independent rotation of said flow control element. The second actuating key regulates the angular setting of the flow control element and the ball can be rotated between an opened and closed position without effecting this setting, so that the valve can be actuated virtually instantaneously from a fully closed position to a particular regulatory setting. The engagement between the actuating keys and associated valve elements provides sufficient clearance to permit the ball to ''''float'''' downstream, when it is in the closed position under upstream fluid pressure, to enhance the sealing of the valve.
A ball valve comprising: a. a body including a valve chamber and inlet and outlet ports communicating with said chamber, b. a ball means disposed within the valve chamber and rotatable between an open and a closed position said ball means including a conduit communicating between the inlet and outlet ports in the open position, c. sealing means between the ball means and the body, d. first actuating means rotating the ball means between the open and closed position and including; 1. a first key mounted within the body transversely of the conduit and having a connection with the ball means for rotating said ball means between the open and closed positions, e. a flow control means including shaft means journalled in and carried by the ball means for rotatively mounting said flow control means within said conduit, and f. second actuating means rotatively mounted in an aperture of the wall of the body transversely of the conduit and having a connection with the shaft means for selectively rotating said flow control means within the conduit to restrict flow through the conduit when the ball meAns is in the open position, the said connections having clearance for enabling movement of the ball means relative to the body and against the sealing means when the ball means is in the closed position with the flow control means rotated to and maintained in any selected position within the conduit.
Claim 2
Dependent Claim
237 words
A ball valve comprising: a. a body including a valve chamber and inlet and outlet ports communicating with said chamber, b. a ball means disposed within the valve chamber and rotatable between an open and a closed position said ball means including a conduit communicating between the inlet and outlet ports in the open position, c. sealing means between the ball means and the body, d. first actuating means rotating the ball means between the open and closed position and including; 1. a first key mounted within the body transversely of the conduit and having a connection with the ball means for rotating said ball means between the open and closed positions, e. a flow control means including shaft means journalled in and carried by the ball means for rotatively mounting said flow control means within said conduit, and f. second actuating means rotatively mounted in an aperture of the wall of the body transversely of the conduit and having a connection with the shaft means for selectively rotating said flow control means within the conduit to restrict flow through the conduit when the ball meAns is in the open position, the said connections having clearance for enabling movement of the ball means relative to the body and against the sealing means when the ball means is in the closed position with the flow control means rotated to and maintained in any selected position within the conduit.