Patent ID: 9027907
Filing Date: 2015-05-12
Classification: F16K

Abstract:
1. A butterfly valve having an open position to allow fluid flow therethrough, and a closed position to prevent fluid flow therethrough, the butterfly valve comprising: a housing having an inlet and an outlet with a flow path extending from the inlet to the outlet; a valve member having a valve plate to selectively allow and prevent fluid flow from the inlet to the outlet along the flow path; a tube positioned within the flow path and adjacent the valve member to selectively form a seal therewith; wherein the valve plate includes a radially-outwardly-projecting lip such that one portion of the valve plate extends radially beyond the outer periphery of the tube, and another portion of the valve plate does not extend radially beyond the outer periphery of the tube; and wherein the valve plate includes a mounting portion with a step and a gate portion with a pair of ribs that each extend from the step along a portion of the circumference of the valve plate such that the pair of support ribs are separate and in an opposed spaced relationship on a back surface of the valve plate which faces the outlet in the closed position of the butterfly valve.