A gate valve is a type of linear motion valve used to control the flow of fluid through a pipeline. It features a sliding gate or wedge-shaped disc that moves perpendicular to the flow of the fluid to either fully open or fully close the valve. Gate valves are commonly used in applications where a straight-line flow of fluid and minimal pressure drop is required, such as in the oil and gas industry, water treatment plants, and power generation facilities.

One of the main advantages of gate valves is their ability to provide tight shut-off, effectively stopping the flow of fluid when fully closed. They are also capable of handling high-pressure and high-temperature environments, making them suitable for demanding industrial applications. Gate valves are known for their robust construction and reliability, with minimal maintenance requirements. However, they are generally slower to operate compared to other types of valves due to the time required for the gate to move into position.