Gate valves are essential flow-control devices used to start or stop the flow of liquids in pipelines. They operate by raising or lowering a flat or wedge-shaped gate inside the valve body, allowing full flow when open and complete shutoff when closed. Their simple design ensures minimal pressure drop and smooth, unobstructed fluid passage. These valves are widely used in water supply systems, oil and gas pipelines, chemical plants, and various industrial applications. Rising and non-rising stem options allow flexibility based on installation space and operational requirements.