Butterfly valve with a rigid seal
AssigneesSaint-Gobain Performance Plastics Corporation, Saint-Gobain Performance Plastics France
InventorsYves Stefani, Roland Lucotte
Life of this patent
Estimating the term…
Abstract
A valve is disclosed and can include a valve body having a central bore for passage of fluid there through and a longitudinal axis. The valve can also include a seal installed within the valve body along the central bore. The seal can include a first seal member having an annular ring portion and a hub portion extending from the annular ring portion. The seal can also include a second seal member including an annular ring configured to engage a distal end of the hub portion and create a sealing engagement between the hub portion and the annular ring when a compressive force is applied to the first and the second seal members.
Claims19
A valve (100), comprising:
- a valve body (102) defining a first central bore (104) for passage of fluid there through, the central bore (104) having a longitudinal axis, the valve body (102) also defining a second central bore (132) perpendicular to the first central bore (104) along a central axis (124), wherein the second central bore (132) is configured to receive an actuator rod (134);
- a rigid seal (150) installed within the valve body (102) along the first central bore (104), wherein the seal (150) comprises:
- a first seal member (152) comprising an annular ring portion (156) and a hub portion (158) extending from the annular ring portion (156), wherein the hub portion (158) includes a first radial bore (170) and a second radial bore (172) aligned with the second central bore (132) along the central axis (124);
- and
- a second seal member (154) including an annular ring configured to engage a distal end (160) of the hub portion (158) and create a sealing engagement between the hub portion (158) of the first seal member and the annular ring of the second seal member by a complementary engagement structure wherein one seal member extends into the other seal member when a compressive force is applied to the first (152) and the second seal members (154), wherein the sealing engagement occurs at a seal interface (180) and the entire seal interface (180) is spaced a distance, D, from the central axis (124).
A seal assembly, the seal assembly comprising:
- a first rigid seal member (152) having an annular ring portion (156) and a hub portion (158) , wherein the hub portion (158) includes a first radial bore (170) and a second radial bore (172) formed along a central axis (124);
- and
- a second rigid seal member (154) include an annular ring, wherein the first seal member (152) and the second seal member (154) include a complementary engagement structure wherein one seal member extends into the other seal member configured to create a seal interface (180) within a valve (100) in which the seal assembly is installed, wherein the entire seal interface (180) is spaced a distance, D, from the central axis (124);
- and,
- wherein the seal assembly is adapted to be disposed in a valve body (102) defining a first central bore (104) for passage of fluid there through, the central bore (104) having a longitudinal axis˜the valve body (102) also defining a second central bore (132) perpendicular to the first central bore (104) along the central axis (124), wherein the second central bore (132) is configured to receive an actuator rod (134).
Dependencies are inferred from the claim text.