Patent ID: 9010371
Filing Date: 2015-04-21
Classification: F16K,Y10T

Abstract:
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; and 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.