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, and the most commonly used mode gate valve has two sealing faces forming a wedge, and the wedge angle varies with the valve parameters, usually 50, and 2°52' when the medium temperature is not high. The gate plate of the wedge gate valve can be made into a whole, which is called a rigid gate; It can also be made into a ram that can produce a slight amount of deformation to improve its manufacturability and make up for the deviation of the sealing surface angle in the processing process, which is called an elastic ram.