The invention relates to a door assembly (1) allowing a sealed transfer between two enclosed volumes, comprising a flange (2) arranged to delimit an opening in one of the enclosed volumes, and a door (4) that extends along an axis (C) and is hingedly fastened to/mounted on the flange (2) so as to move from a closed position in which the door (4) closes the passage opening (3), into an open position, characterized in that the door (4) is fastened to the flange (2) by a double-joint linkage mechanism (5) comprising a first joint (6) arranged to allow a rotational movement about an axis (A) perpendicularly to the axis (C) of the door by a maximum of 30 degrees in relation to the plane of the passage opening (3), and a second joint (7) arranged to allow a rotational movement about an axis (B) parallel to the axis (C) of the door.

The invention relates to a door assembly (1) allowing a sealed transfer between two enclosed volumes, comprising a flange (2) arranged to delimit an opening in one of the enclosed volumes, and a door (4) that extends along an axis (C) and is hingedly fastened to/mounted on the flange (2) so as to move from a closed position in which the door (4) closes the passage opening (3), into an open position, characterized in that the door (4) is fastened to the flange (2) by a double-joint linkage mechanism (5) comprising a first joint (6) arranged to allow a rotational movement about an axis (A) perpendicularly to the axis (C) of the door by a maximum of 30 degrees in relation to the plane of the passage opening (3), and a second joint (7) arranged to allow a rotational movement about an axis (B) parallel to the axis (C) of the door.

A valve system comprising a valve body having an opening and an interior; a davit system comprising: a first pillar having an upper end and a lower end, wherein the lower end of the first pillar is attached to the valve body; a second pillar having an upper end and a lower end, wherein the lower end of the second pillar is attached to the valve body; a pivot arm having a first end and a second end, wherein the first end of the pivot arm is rotationally attached to the upper end of the first pillar, the second end of the pivot arm is removably attached to the upper end of the second pillar and the pivot arm straddles the valve body opening when the second end of the pivot arm touches the upper end of the second pillar; and a closure cap system comprising a closure cap, wherein a means for sealing the closure cap is disposed between the closure cap and the valve body; and a cap stem having an upper end and a lower end, wherein the lower end of the cap stem is attached to the closure cap and the upper end of the cap stem is disposed through a central portion of the pivot arm; and wherein a means for lifting and lowering the closure cap engages the cap stem to lift or lower the closure cap is disclosed. A method of using the valve system is also disclosed.

A valve system comprising a valve body having an opening and an interior; a davit system comprising: a first pillar having an upper end and a lower end, wherein the lower end of the first pillar is attached to the valve body; a second pillar having an upper end and a lower end, wherein the lower end of the second pillar is attached to the valve body; a pivot arm having a first end and a second end, wherein the first end of the pivot arm is rotationally attached to the upper end of the first pillar, the second end of the pivot arm is removably attached to the upper end of the second pillar and the pivot arm straddles the valve body opening when the second end of the pivot arm touches the upper end of the second pillar; and a closure cap system comprising a closure cap, wherein a means for sealing the closure cap is disposed between the closure cap and the valve body; and a cap stem having an upper end and a lower end, wherein the lower end of the cap stem is attached to the closure cap and the upper end of the cap stem is disposed through a central portion of the pivot arm; and wherein a means for lifting and lowering the closure cap engages the cap stem to lift or lower the closure cap is disclosed. A method of using the valve system is also disclosed.

A valve system comprising a valve body having an opening and an interior; a davit system comprising: a first pillar having an upper end and a lower end, wherein the lower end of the first pillar is attached to the valve body; a second pillar having an upper end and a lower end, wherein the lower end of the second pillar is attached to the valve body; a pivot arm having a first end and a second end, wherein the first end of the pivot arm is rotationally attached to the upper end of the first pillar, the second end of the pivot arm is removably attached to the upper end of the second pillar and the pivot arm straddles the valve body opening when the second end of the pivot arm touches the upper end of the second pillar; and a closure cap system comprising a closure cap, wherein a means for sealing the closure cap is disposed between the closure cap and the valve body; and a cap stem having an upper end and a lower end, wherein the lower end of the cap stem is attached to the closure cap and the upper end of the cap stem is disposed through a central portion of the pivot arm; and wherein a means for lifting and lowering the closure cap engages the cap stem to lift or lower the closure cap is disclosed. A method of using the valve system is also disclosed.

The invention relates to a door assembly (1) allowing a sealed transfer between two enclosed volumes, comprising a flange (2) arranged to delimit an opening in one of the enclosed volumes, and a door (4) that extends along an axis (C) and is hingedly fastened to/mounted on the flange (2) so as to move from a closed position in which the door (4) closes the passage opening (3), into an open position, characterized in that the door (4) is fastened to the flange (2) by a double-joint linkage mechanism (5) comprising a first joint (6) arranged to allow a rotational movement about an axis (A) perpendicularly to the axis (C) of the door by a maximum of 30 degrees in relation to the plane of the passage opening (3), and a second joint (7) arranged to allow a rotational movement about an axis (B) parallel to the axis (C) of the door.

The invention relates to a door assembly (1) allowing a sealed transfer between two enclosed volumes, comprising a flange (2) arranged to delimit an opening in one of the enclosed volumes, and a door (4) that extends along an axis (C) and is hingedly fastened to/mounted on the flange (2) so as to move from a closed position in which the door (4) closes the passage opening (3), into an open position, characterized in that the door (4) is fastened to the flange (2) by a double-joint linkage mechanism (5) comprising a first joint (6) arranged to allow a rotational movement about an axis (A) perpendicularly to the axis (C) of the door by a maximum of 30 degrees in relation to the plane of the passage opening (3), and a second joint (7) arranged to allow a rotational movement about an axis (B) parallel to the axis (C) of the door.