A gate valve is a type of valve used to control the flow of fluids in a pipeline by raising or lowering a gate or wedge-like disc. When the valve is fully open, the gate is lifted completely out of the flow path, allowing for unrestricted fluid flow. Conversely, when the valve is closed, the gate is lowered to block the flow. Gate valves are typically used in applications where a straight-line flow and minimal pressure drop are desired, such as in water, wastewater, and gas systems. They are commonly made from materials like brass, stainless steel, or cast iron, and are valued for their durability and ability to handle high pressures. Gate valves are less suitable for throttling applications due to their tendency to cause turbulence and erosion when partially opened