Patent ID: 6701958
Filing Date: 2004-03-09
Classification: F16K,Y10T

Abstract:
A fluid control valve comprising:a valve body having a fluid passageway; a cage mounted in said fluid passageway, said cage including a cage bore having an axis, said cage defining one or more windows, a valve seat located below said one or more windows and a sealing lip located above said one or more windows; and a valve plug assembly including a valve plug that is axially slidable in the cage bore, said valve plug having one or more pressure balancing passages between opposite ends thereof and a seating surface for engaging the valve seat, said valve plug assembly further comprising a deformable sealing ring for engaging the sealing lip when the valve plug is in a closed position, wherein the deformable sealing ring contacts the cage at a surface of the sealing lip substantially perpendicular to the cage bore.