Granted Patent B2

US 9,097,351 · App. 12/889,622 · Granted Aug 4, 2015

Abstract

Claims (11)

1. A valve comprising:

a housing;

a fluid inlet and fluid outlet in the housing;

a valve seat within the housing;

a hemi-wedge valve member mounted within the housing;

the hemi-wedge valve member having an opening that cooperates with the valve seat to control fluid through the valve; and

the opening being provided with a notch at the circumference of its leading edge.

2. A valve according to claim 1 wherein the notch is in the shape of a V.

3. A valve according to claim 1 wherein the notch extends entirely through the wall portion of the hemi-wedge valve member.

4. A valve according to claim 1 wherein the hemi-wedge valve member includes a wedge portion the thickness of which increases from its leading edge to its trailing edge to provide a mechanical loading of the seat as the valve is moved to a closed position.

5. A valve according to claim 1 further including a flow path of substantially uniform diameter extending from the fluid inlet to the fluid outlet and wherein the diameter of the opening in the hemi-wedge valve member is substantially the same as the diameter of the flow path.

Assignments (19)