High-pressure face seal

摘要

Described is a valve face seal assembly. The assembly includes a moveable member, such as a poppet, and a seal having a sealing portion carried by the moveable member. A seat opposite the sealing portion of the seal has a transaxial seat face and an axial seat face extending axially toward the moveable member at an obtuse angle from the transaxial seat face. When the seal of the moveable member is brought into contact with the seat, a seal is formed with the transaxial seat face and with the axial seat face.

主权项

1. A valve assembly for controlling the flow of fluid from an inlet to an outlet comprising:
a moveable member; a seal carried by the moveable member, the seal having a main body and a sealing portion, wherein the seal comprises an inner diameter face having a wedge-shaped surface; a valve seat disposed opposite the moveable member, the valve seat having a transaxial seat face and an axial seat face extending axially from and forming an obtuse angle with the transaxial seat face; and a retaining member adapted to prevent the seal and the moveable member from disengaging; wherein when the moveable member is in a first position, the sealing portion and retaining member are axially spaced from the valve seat; and wherein when the moveable member is in a second position, the sealing portion sealingly engages the transaxial seat face and the axial seat face of the valve seat and the retaining member engages the valve seat adjacent the seal such that the valve seat, retaining member and seal together function to prevent the flow of fluid from the inlet to the outlet.