A gate valve includes a valve body having a through-bore and a gate cavity, a gate disposed within the gate cavity, an annular seat pocket formed within the valve body, an annular seat disposed within the annular seat pocket, and a skirt disposed within the gate cavity and in contact with the annular seat and in contact with the surface of the gate. The skirt has an annular opening that is concentric with the annular seat and is sized and configured so that an outer edge of the annular seat abuts with an inner edge of the annular opening. The skirt may be suspended by the seat within the gate cavity. The skirt may reduce or prevent fluid exchange between a lubricant cavity formed within the valve body and an opening formed within the gate or with the through-bore.

A gate valve includes a valve body having a through-bore and a gate cavity, a gate disposed within the gate cavity, an annular seat pocket formed within the valve body, an annular seat disposed within the annular seat pocket, and a skirt disposed within the gate cavity and in contact with the annular seat and in contact with the surface of the gate. The skirt has an annular opening that is concentric with the annular seat and is sized and configured so that an outer edge of the annular seat abuts with an inner edge of the annular opening. The skirt may be suspended by the seat within the gate cavity. The skirt may reduce or prevent fluid exchange between a lubricant cavity formed within the valve body and an opening formed within the gate or with the through-bore.

A gate valve includes a valve body having a through-bore and a gate cavity, a gate disposed within the gate cavity, an annular seat pocket formed within the valve body, an annular seat disposed within the annular seat pocket, and a skirt disposed within the gate cavity and in contact with the annular seat and in contact with the surface of the gate. The skirt has an annular opening that is concentric with the annular seat and is sized and configured so that an outer edge of the annular seat abuts with an inner edge of the annular opening. The skirt may be suspended by the seat within the gate cavity. The skirt may reduce or prevent fluid exchange between a lubricant cavity formed within the valve body and an opening formed within the gate or with the through-bore.

A gate valve includes a valve body having a through-bore and a gate cavity, a gate disposed within the gate cavity, an annular seat pocket formed within the valve body, an annular seat disposed within the annular seat pocket, and a skirt disposed within the gate cavity and in contact with the annular seat and in contact with the surface of the gate. The skirt has an annular opening that is concentric with the annular seat and is sized and configured so that an outer edge of the annular seat abuts with an inner edge of the annular opening. The skirt may be suspended by the seat within the gate cavity. The skirt may reduce or prevent fluid exchange between a lubricant cavity formed within the valve body and an opening formed within the gate or with the through-bore.

A gate valve includes a valve body having a through-bore and a gate cavity that are substantially orthogonal to each other, a gate disposed within the gate cavity operable to translate along a length of the gate cavity to move between an open position and a closed position, an annular seat pocket formed within the valve body proximate to the intersection of the through-bore and the gate cavity and concentric with the through-bore, an annular seat disposed within the annular seat pocket, a skirt disposed within the gate cavity and in contact with the annular seat and in contact with the surface of the gate, and a plurality of skirt energizers coupled to the skirt to provide a biasing force for biasing the skirt towards the gate. A substantial fluid seal is formed between the surface of the seat and the surface of the gate when the gate is closed.

A gate valve includes a valve body having a through-bore and a gate cavity that are substantially orthogonal to each other, a gate disposed within the gate cavity operable to translate along a length of the gate cavity to move between an open position and a closed position, an annular seat pocket formed within the valve body proximate to the intersection of the through-bore and the gate cavity and concentric with the through-bore, an annular seat disposed within the annular seat pocket, a skirt disposed within the gate cavity and in contact with the annular seat and in contact with the surface of the gate, and a plurality of skirt energizers coupled to the skirt to provide a biasing force for biasing the skirt towards the gate. A substantial fluid seal is formed between the surface of the seat and the surface of the gate when the gate is closed.