US Patent 12110979 Pressure energized gate valve seat and seal assembly

A gate valve body having a gate cavity intersecting a channel having a proximal channel portion and a distal channel portion on opposing sides of the gate cavity, a gate positioned in the gate cavity and moveable between closed and open positions, the gate having a proximal gate face and a distal gate face extending perpendicular to the channel; a proximal seat between a proximal valve body portion and the gate, the proximal seat having a first proximal seat face adjacent a proximal valve body face and a second proximal seat face adjacent the proximal gate face; a proximal annular groove on a radial outer surface of the proximal seat; a proximal axial seal positioned in the proximal annular groove in contact with the proximal seat and the valve body; and a proximal conduit extending through the proximal seat between the proximal channel portion and the proximal annular groove.