Self-latching manual RV gate valve actuator

An external actuator for manually operating a gate valve, comprising:

• a support plate with a first plurality of connection points, wherein at least one of the connection points is adapted to mount on the gate valve,
• wherein the gate valve comprises a housing, a linearly sliding gate in the housing movable between an open and a closed position, an elongated valve stem attached to the linearly sliding gate, and a stroke length defined by a distance the gate travels between the open position and the closed position;
• a linear sleeve comprising a top face, a bottom face, and two side faces, wherein the bottom face is attached to the support plate such that the linear sleeve is axially parallel to the valve stem of the gate valve when the support plate is mounted on the housing, wherein the top face is slotted;
• a shaft slidably arranged in the linear sleeve, wherein one end of the shaft is linked to the valve stem by way of a stem link;
• a lever member comprising a first end, a second end, and a second plurality of connection points wherein the first end is rotatably attached to the support plate, wherein the plane of rotation is parallel to the support plate;
• and
• a lever link comprising a first end and a second end, wherein the first end of the lever link is rotatably connected to the lever member and the second end of the lever link is rotatably connected to the shaft by a pin through a slot on the linear sleeve.