Energized spring seal for a floating valve seat
First Claim
Patent Images
1. A floating ball valve comprising:
- a valve body, the valve body forming at least one recess;
at least one metal valve seat contained in the at least one recess and spaced apart from the valve body, the at least one metal valve seat comprising a metal sealing surface and a resilient seat coupled to and overlying the sealing surface, wherein a leak path is defined by a space between the valve body and the at least one metal seat;
a ball comprising a through hole along a diameter thereof, the at least one metal valve seat positioned between the valve body and the ball; and
at least one energized seal, wherein the energized seal comprises a metal seal, residing in the leak path between the valve body and the at least one metal valve seat and extending between the at least one metal valve seat and the valve body wherein the at least one energized seal seals between a valve chamber where the ball is positioned and the leak path and wherein a gasket residing in the leak path between the valve body and the at least one metal valve seat wherein the gasket seals between the leak path and a fluid conduit and wherein the at least one energized seal is elastic and compressed between the valve body and the at least one metal valve seat such that the ball and the resilient seat abut.
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Accused Products
Abstract
The technology of the present application provides a floating ball valve. The ball valve includes a valve body having a recess or chamber and a ball contained in the recess. A valve seat forms a sealing relationship between the ball and the fluid conduit. The valve seat has a resilient seat or member formed on the valve seat that confronts a surface of the ball. An energized spring seal on the opposite side forms a seal between the valve body and the valve seat and pushes the resilient seat towards the ball.
118 Citations
16 Claims
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1. A floating ball valve comprising:
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a valve body, the valve body forming at least one recess; at least one metal valve seat contained in the at least one recess and spaced apart from the valve body, the at least one metal valve seat comprising a metal sealing surface and a resilient seat coupled to and overlying the sealing surface, wherein a leak path is defined by a space between the valve body and the at least one metal seat; a ball comprising a through hole along a diameter thereof, the at least one metal valve seat positioned between the valve body and the ball; and at least one energized seal, wherein the energized seal comprises a metal seal, residing in the leak path between the valve body and the at least one metal valve seat and extending between the at least one metal valve seat and the valve body wherein the at least one energized seal seals between a valve chamber where the ball is positioned and the leak path and wherein a gasket residing in the leak path between the valve body and the at least one metal valve seat wherein the gasket seals between the leak path and a fluid conduit and wherein the at least one energized seal is elastic and compressed between the valve body and the at least one metal valve seat such that the ball and the resilient seat abut. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A metal valve seat assembly for a ball valve comprising:
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a plurality of unitary metal valve seats to fit in a valve body, wherein the metal valve seats are configured to be spaced apart from the valve body wherein a space between the metal valve seats and the valve body defines a leak path, and wherein each of the plurality of unitary metal valve seats comprise; a first side and a second side opposite the first side, a metal seating surface on the first side shaped to operatively engage a ball; a resilient seat coupled to and overlying the seating surface such that when the seating surface operatively engages the ball, the resilient seat is between the metal seating surface and the ball; a primary seal coupled to the second side, the primary seal to form a seal between the valve seat and the ball valve body and configured to seal between the leak path and a pipe; and an energized secondary seal, wherein the energized secondary seal is a metal energized secondary seal, configured to reside in the leak path, the energized secondary seal coupled to the second side of the valve seat to compress the resilient seat onto a surface of the ball and to form a seal between the second side of the valve seat and the ball valve body and configured to seal between a valve chamber and the leak path. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification