Anti-cavitation valve assembly
AssigneeGriswold Industries
InventorsRobert Morgan Wolfe, David Michael Rose, John Frederic Link
Life of this patent
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Abstract
An anti-cavitation valve assembly includes a seat positioned within a fluid pathway between a fluid inlet and outlet of a valve. Spaced apart elongated seat apertures are formed in a circumferential wall of the seat that have a varying opening width along a length thereof to direct fluid flow into an inner seat chamber of the seat. A disc guide is slidably movable relative to the seat and has a wall having spaced apart disc guide apertures formed therein. A tortuous fluid flow pathway is formed as fluid enters through the seat apertures, into the inner seat chamber, and exits through the disc guide apertures to minimize fluid cavitation.
Claims22
An anti-cavitation valve assembly, comprising:
- a seat fixedly positionable within a fluid pathway between a fluid inlet and a fluid outlet of a valve, the seat having a circumferential wall at least partially defining an inner seat chamber, the wall having a plurality of spaced apart elongated seat apertures formed therein, the seat apertures having a varying opening width along a length thereof;
- a disc guide slidably movable relative to the seat so as to cooperate with the seat in opening and closing fluid flow between the inlet and the outlet of the valve, the disc guide including a wall having a plurality of spaced apart disc guide apertures formed therein;
- and
- a boss extending upwardly though a base of the seat and having a through aperture that accepts a stem, that moves the disc guide, therein, the boss being configured to vary fluid flow therethrough and into the seat inner chamber as the stem is moved along a length of the boss;
- wherein the seat apertures are arranged so as to direct fluid to converge in the seat inner chamber;
- wherein the wall of the disc guide has an upper portion having the disc guide apertures formed therein and a lower portion that increasingly occludes the seat apertures as the disc guide is moved into the closed position;
- wherein the seat apertures are geometrically configured to have a larger opening width at a top portion thereof and a smaller opening width at a lower portion thereof;
- and
- wherein a tortuous fluid flow pathway is formed as fluid enters through the seat apertures and into the inner seat chamber and exits through the disc guide apertures to minimize fluid cavitation.
An anti-cavitation valve assembly, comprising:
- a seat fixedly positionable within a fluid pathway between a fluid inlet and a fluid outlet of a valve, the seat having a circumferential wall at least partially defining an inner seat chamber, the wall having a plurality of spaced apart elongated seat apertures formed therein so as to direct fluid to converge in the seat inner chamber, the seat apertures being configured so as to have a larger flow area at a top portion thereof and a smaller flow area at a lower end thereof;
- a disc guide slidably movable relative to the seat so as to cooperate with the seat in opening and closing fluid flow between the inlet and the outlet of the valve, the disc guide including a wall having a plurality of spaced apart disc guide apertures formed in an upper portion and a lower portion that increasingly occludes the seat apertures as the disc guide is moved into the closed position;
- and
- a deflector wall extending upwardly from a base of the seat and into the inner chamber im spaced relation to the seat circumferential wall and seat apertures;
- wherein a tortuous fluid flow pathway is formed as fluid enters through the seat apertures and into the inner seat chamber and exits through the disc guide apertures to minimize fluid cavitation.
Dependencies are inferred from the claim text.