Patent ID: 8037897
Filing Date: 2011-10-18
Classification: F04B,Y10S,Y10T

Abstract:
1. A novel valve apparatus having a longitudinal axis therethrough, comprising: a valve seat member that comprises a hollow bore and a first frustoconical contact surface that has an inner perimeter and an outer perimeter; a valve closure member that comprises a valve body and a second frustoconical contact surface that is adapted to seal against the first frustoconical contact surface in a strike face area, the valve closure member being movable along the longitudinal axis of the valve apparatus; a fluid flow path through the bore of the valve seat member and between the valve seat member and the valve closure member, the fluid flow path being closed when the second frustoconical contact surface is in contact with the first frustoconical contact surface; an elastomeric resilient valve insert member attached to the valve body member of the valve closure member, wherein said insert member: