A Valve Stem is a critical component of a valve, acting as the link between the valve actuator and the valve disc or ball. It is responsible for transmitting the motion needed to open or close the valve, thereby controlling the flow of fluid. Typically made from stainless steel or other corrosion-resistant materials, valve stems are designed to withstand high pressures and temperatures. They are essential in ensuring the reliability and functionality of the valve, making them a vital part in applications ranging from automotive engines to industrial pipelines.