API 602 Forged Valve is a type of gate valve designed to meet the standards set by API 602. These valves are specifically manufactured for industrial facilities and are typically used in applications where a 4 Inch or smaller valve is required. The specification outlines the design and construction criteria for these valves, including information on extended-body forged valves. These valves are manufactured using the forging method, where metal is heated until it becomes soft and then shaped using mechanical forces. They are known for their durability, strength, and resistance to thermal fatigue compared to other types of valves.