Valve member and assembly with inlet and outlet pressure relief grooves

摘要

A valve assembly and a valve member therefor including a fluid passage in the valve assembly with inlet and outlet portions and a valve seat. The valve member includes a valve member face selectively engaging the valve seat and defining a contact area therebetween with an inlet peripheral edge adjacent the passage inlet portion, and an outlet peripheral edge adjacent the passage outlet portion. An inlet pressure relief groove extends along one of the valve seat and the valve member face from the inlet peripheral edge to an interior portion of the contact area. An outlet pressure relief groove extends along one of the valve seat and the valve member face from the outlet peripheral edge to an interior portion of the contact area. The contact area includes a continuous sealing portion whereat the valve seat and the valve member face are in engagement for preventing fluid flow from the passage inlet portion to the passage outlet portion with the valve member in its closed position.