Patent ID: 9151029
Filing Date: 2015-10-06
Classification: E03D,F16K

Abstract:
1. A flush valve comprising: valve body having an inlet and an outlet a valve assembly comprising a valve member and barrel in communication with the inlet and the outlet and having an exterior surface and an interior surface with a valve seat defined at the upper portion of the barrel, the valve member seatable upon the valve seat to seal the inlet from the outlet; the valve assembly having a flow noise restrictor adjacent to the valve seat; and the flow noise restrictor having a sidewall with a plurality of features formed in the sidewall and partially defining a fluid flow surface non-parallel with the valve member, the flow noise restrictor disposable about the exterior portion of the barrel and the fluid flow path extending from exterior of the flow noise restrictor, through the plurality of features to interior of the flow noise restrictor and into the barrel; wherein the flow noise restrictor has a continuously variable circumferential cross-section.