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An anti-cavitation seat which is disposable between an inlet and an outlet of a pressure reducing valve, and including a plurality of inlets causing fluid to flow into a converging pathway to reduce pressure of the fluid. The inlets form a tortuous path for a portion of the fluid flowing into the an

An anti-cavitation seat which is disposable between an inlet and an outlet of a pressure reducing valve, and including a plurality of inlets causing fluid to flow into a converging pathway to reduce pressure of the fluid. The inlets form a tortuous path for a portion of the fluid flowing into the anti-cavitation seat, so as to further reduce the pressure of the fluid. A standard stem assembly is used in conjunction with the anti-cavitation seat to alter the flow of fluid through the valve.

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1. An anti-cavitation seat fixedly positionable between an inlet and an outlet of a main valve and relative a movable non-anti-cavitation disc of a stem assembly so as to cooperate with the disc in opening and closing fluid flow between the inlet and the outlet of the main valve, the anti-cavitation

1. An anti-cavitation seat fixedly positionable between an inlet and an outlet of a main valve and relative a movable non-anti-cavitation disc of a stem assembly so as to cooperate with the disc in opening and closing fluid flow between the inlet and the outlet of the main valve, the anti-cavitation seat comprising: a first wall having a plurality of spaced apart apertures formed therein;a second wall spaced apart from the first wall along at least a portion thereof and defining an outer chamber between the first and second walls, and an inner chamber, the second wall having a plurality of spaced apart apertures formed therein;a peripheral lip at an upper end of the first and second walls configured to engage the non-anti-cavitation disc of the stem assembly when the non-anti-cavitation disc is moved into a closed position;wherein a tortuous fluid flow pathway is formed between the outside of the apertures of the first wall and the inside of the apertures of the second wall; andwherein the apertures of the second wall are arranged so as to direct fluid into the inner chamber such that fluid flow from the second wall apertures converges in the inner chamber. 2. The anti-cavitation seat of claim 1, wherein the apertures of the first wall are elongated slots. 3. The anti-cavitation seat of claim 1, wherein the apertures of the second wall are elongated slots. 4. The anti-cavitation seat of claim 1, wherein the apertures of the second wall are offset from the apertures of the first wall. 5. The anti-cavitation seat of claim 1, including a base from which the first and second walls extend. 6. The anti-cavitation seat of claim 5, including a hollow post extending from the base into the inner chamber in spaced relation to the second wall, the post and the second wall at least partially defining the inner chamber therebetween. 7. The anti-cavitation seat of claim 6, wherein the post includes apertures formed therein permitting fluid to pass through the post and into the inner chamber. 8. The anti-cavitation seat of claim 7, wherein the apertures of the post and the apertures of the second wall are arranged to converge fluid flowing from at least a plurality of the post apertures and second wall apertures. 9. The anti-cavitation seat of claim 8, wherein at least a plurality of the apertures of the post and the apertures of the second wall are generally aligned opposite one another such that fluid flowing from apertures of the post is generally directed towards fluid flowing from the apertures of the second wall. 10. The anti-cavitation seat of claim 6, wherein the apertures of the post allow for increased flow capacity through the seat as the valve opens without diminishing anti-cavitation properties of the seat. 11. The anti-cavitation seat of claim 6, wherein the post includes an opening adapted to receive a stem of a stem assembly of the main valve therein. 12. An anti-cavitation seat fixedly positionable between an inlet and an outlet of a main valve and relative a movable non-anti-cavitation disc of a stem assembly so as to cooperate with the disc in opening and closing fluid flow between the inlet and the outlet of the main valve, the anti-cavitation seat comprising: a first wall having a plurality of spaced apart apertures formed therein;a second wall spaced apart from the first wall at least along a portion thereof so as to define an outer chamber between the first and second walls, the second wall having a plurality of spaced apart apertures formed therein;a base from which the first and second walls extend;a hollow post extending from the base into the inner chamber in spaced relation to the second wall so as to at least partially define an inner chamber therebetween, the post including apertures formed therein permitting fluid to pass through the post and into the inner chamber;wherein the apertures of the post and the apertures of the second wall are arranged to direct fluid flowing from at least a plurality of the post apertures towards fluid flowing from second wall apertures such that the fluid flows converge in the inner chamber therebetween. 13. The anti-cavitation seat of claim 12, wherein a tortuous fluid flow pathway is formed between the outside of the apertures of the first wall and the inside of the apertures of the second wall. 14. The anti-cavitation seat of claim 13, wherein the apertures of the second wall are offset from the apertures of the first wall. 15. The anti-cavitation seat of claim 12, wherein the apertures of the first wall are elongated slots. 16. The anti-cavitation seat of claim 12, wherein the apertures of the second wall are elongated slots. 17. The anti-cavitation seat of claim 12, including a peripheral lip at an upper end of the first and second walls configured to engage the disc of the stem assembly. 18. The anti-cavitation seat of claim 12, wherein at least a plurality of the apertures of the post and the apertures of the second wall are generally aligned opposite one another. 19. The anti-cavitation seat of claim 12, wherein the post includes an opening adapted to receive a stem of a stem assembly of the main valve therein. 20. A method of converting a non-anti-cavitation main valve into an anti-cavitation main valve, comprising the steps of: providing a main valve having a fluid inlet and a fluid outlet and a non-anti-cavitation seat disposed between the fluid inlet and the fluid outlet and aligned with a non-anti-cavitation stem assembly disc, the seat and the disc cooperatively acting to open and close fluid flow between the inlet and the outlet of the main valve;removing the non-anti-cavitation seat; andinstalling an anti-cavitation seat including a first wall having a plurality of apertures and a second wall spaced apart from the first wall and having a plurality of apertures, the first and second walls defining a tortuous fluid flow pathway from the apertures of the first wall to the apertures of the second wall and the apertures of the second wall are arranged so as to converge fluid flow in an inner chamber defined by the second wall, wherein the non-anti-cavitation stem assembly disc and the anti-cavitation seat cooperatively act to open and close fluid flow between the inlet and the outlet of the main valve. 21. The method of claim 20, wherein the apertures of the first and second walls of the anti-cavitation seat comprise spaced apart elongated slots. 22. The method of claim 20, wherein the installing step includes the step of installing an anti-cavitation seat further including a hollow post extending from a base into the inner chamber and having apertures for passing fluid into the inner chamber so as to converge with at least a portion of the fluid passing through the apertures of the second wall. 23. An anti-cavitation seat positionable between an inlet and an outlet of a main valve and relative a non-anti-cavitation disc of a stem assembly so as to cooperate with the disc in opening and closing fluid flow between the inlet and the outlet of the main valve, the anti-cavitation seat comprising: a first wall having a plurality of spaced apart apertures formed therein; anda second wall spaced apart from the first wall and defining an outer chamber between the first and second walls, and an inner chamber, the second wall having a plurality of spaced apart apertures formed therein; anda base from which the first and second walls extend; anda hollow post extending from the base into the inner chamber, wherein the post includes apertures formed therein permitting fluid to pass through the post and into the inner chamber;wherein a tortuous fluid flow pathway is formed between the outside of the apertures of the first wall and the inside of the apertures of the second wall;wherein the apertures of the second wall are arranged so as to direct fluid into the inner chamber such that fluid flow from the second wall apertures converges in the inner chamber; andwherein the apertures of the post allow for increased flow capacity through the seat as the valve opens without diminishing anti-cavitation properties of the seat. 24. The anti-cavitation seat of claim 23, wherein the apertures of the first wall are elongated slots. 25. The anti-cavitation seat of claim 23, wherein the apertures of the second wall are elongated slots. 26. The anti-cavitation seat of claim 23, wherein the apertures of the second wall are offset from the apertures of the first wall. 27. The anti-cavitation seat of claim 23, including a peripheral lip at an upper end of the first and second walls configured to engage the disc of the stem assembly. 28. The anti-cavitation seat of claim 23, wherein the apertures of the post and the apertures of the second wall are arranged to converge fluid flowing from at least a plurality of the post apertures and second wall apertures. 29. The anti-cavitation seat of claim 28, wherein at least a plurality of the apertures of the post and the apertures of the second wall are generally aligned with one another. 30. The anti-cavitation seat of claim 23, wherein the post includes an opening adapted to receive a stem of a stem assembly of the main valve therein. 31. An anti-cavitation seat positionable between an inlet and an outlet of a main valve and relative a non-anti-cavitation disc of a stem assembly so as to cooperate with the disc in opening and closing fluid flow between the inlet and the outlet of the main valve, the anti-cavitation seat comprising: a first wall having a plurality of spaced apart apertures formed therein; anda second wall spaced apart from the first wall and defining an outer chamber between the first and second walls, and an inner chamber, the second wall having a plurality of spaced apart apertures formed therein; anda base from which the first and second walls extend; anda hollow post extending from the base into the inner chamber;wherein a tortuous fluid flow pathway is formed between the outside of the apertures of the first wall and the inside of the apertures of the second wall;wherein the apertures of the second wall are arranged so as to direct fluid into the inner chamber such that fluid flow from the second wall apertures converges in the inner chamber; andwherein the post includes an opening adapted to receive a stem of a stem assembly of the main valve therein. 32. The anti-cavitation seat of claim 31, wherein the apertures of the first wall are elongated slots. 33. The anti-cavitation seat of claim 31, wherein the apertures of the second wall are elongated slots. 34. The anti-cavitation seat of claim 31, wherein the apertures of the second wall are offset from the apertures of the first wall. 35. The anti-cavitation seat of claim 31, including a peripheral lip at an upper end of the first and second walls configured to engage the disc of the stem assembly. 36. The anti-cavitation seat of claim 31, wherein the post includes apertures formed therein permitting fluid to pass through the post and into the inner chamber. 37. The anti-cavitation seat of claim 36, wherein the apertures of the post and the apertures of the second wall are arranged to converge fluid flowing from at least a plurality of the post apertures and second wall apertures. 38. The anti-cavitation seat of claim 36, wherein at least a plurality of the apertures of the post and the apertures of the second wall are generally aligned with one another. 39. The anti-cavitation seat of claim 31, wherein the apertures of the post allow for increased flow capacity through the seat as the valve opens without diminishing anti-cavitation properties of the seat.