Fluorine-lined gate valve is a type of valve. The opening and closing parts of the fluorine-lined gate valve are the ram, the direction of movement of the ram is perpendicular to the direction of the fluid, and the gate valve can only be fully opened and closed, and cannot be adjusted and throttled. The ram has two sealing faces, the most commonly used mode gate valve has two sealing surfaces forming a wedge, the wedge angle varies with the valve parameters, and the medium temperature is not high at 2°52'.