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US 12,072,042 B2Granted
Valve seat and a valve sealing arrangement of a valve assembly
AssigneeFisher Controls International LLC
InventorTimothy A. McMahon
Life of this patent
Estimating the term…
Abstract
A valve sealing arrangement is disclosed for use with a valve having a valve body, a control member arranged in a flow passage of the valve body, a rotary shaft arranged in a bore of the valve body configured to move the control member between closed and open positions, and a valve seat. The valve seat can include an anchor portion secured to the valve body that has an anchor section with a first sealing surface and a convolution section extending from the anchor section with at least one bend, a first seat portion with a second sealing surface contacting the control member that is moveable via the at least one bend of the convolution section, and a second seat portion extending from the first seat portion with a contact surface contacting a side wall of the flow passage.
Claims20
A valve sealing arrangement comprising:
- a valve body with a flow passage through the valve body;
- a control member arranged in the flow passage to control flow along the flow passage, with flow along the flow passage extending in an axial flow direction at the control member;
- a rotary shaft arranged in a bore of the valve body and operatively connected to the control member, the rotary shaft being configured to move the control member about a control member axis between a closed position and an open position to control flow through the flow passage;
- and
- a valve seat including:
- an anchor portion secured to the valve body, the anchor portion including:
- an anchor section having a first sealing surface that contacts one or more of the valve body or a sealing ring secured to the valve body and thereby provides a first seal against leakage out of the valve body past the anchor section;
- and a convolution section extending from the anchor section radially, relative to the axial flow direction, the convolution section having at least one bend;
- a first seat portion supported relative to the anchor portion by the convolution section, the first seat portion having a second sealing surface that is radially opposite the convolution section, relative to the axial flow direction, and that extends into the flow passage to contact the control member and provide a second seal with the control member along the flow passage, the at least one bend of the convolution section of the valve seat being resiliently bendable such that the first seat portion is movable radially and axially relative to the control member axis;
- and
- a second seat portion extending from the first seat portion axially, relative to the axial flow direction and the control member, with a contact surface that contacts a side wall of the flow passage.
8 more elements
A valve seat, comprising:
- a first seat portion;
- a second seat portion extending from the first seat portion in a first direction, the second seat portion having a contact surface configured to contact a flow passage of a valve that defines an axial flow direction substantially parallel to the first direction;
- and
- an anchor portion extending from the first seat portion in a second direction that is substantially perpendicular to the first direction, the anchor portion including:
- an anchor section having a first sealing surface being configured to provide a first seal within the valve;
- and
- a convolution section connected to the first seat portion, the convolution section being arranged between the first seat portion and the anchor section and including at least one bend that is resiliently compressible in the second direction;
- wherein the first seat portion has a second sealing surface that is configured to provide a second seal within the valve, the second sealing surface being aligned with the convolution section along the second direction;
- and
- wherein the valve seat is configured such that the first seat portion moves in the second direction when the convolution section of the anchor portion is compressed.
7 more elements
A valve assembly, comprising:
- a valve body including an inlet, an outlet, and a flow passage extending from the inlet to the outlet;
- a control member arranged in the flow passage to control flow in an axial direction along the flow passage;
- and
- a valve seat including:
- an anchor portion secured to the valve body, the anchor portion including:
- an anchor section having a first sealing surface that contacts one or more of the valve body or a sealing ring secured to the valve body and thereby provides a first seal against leakage out of the valve body past the anchor section;
- and a convolution section extending from the anchor section transverse to the axial direction, the convolution section having at least one bend;
- and
- a first seat portion supported relative to the anchor portion by the convolution section, the first seat portion having a second sealing surface that extends into the flow passage to contact the control member and thereby provide a second seal with the control member along the flow passage, with the convolution section of the anchor portion and the second sealing surface of the first seat portion aligned along a second direction that is substantially perpendicular to the axial direction;
- wherein the at least one bend of the convolution section of the anchor portion is resiliently bendable such that the first seat portion is moveable radially and axially relative to the control member.
7 more elements
Dependencies are inferred from the claim text.