Extended Stem Ball Valves are a variation of the standard ball valve that features a shaft that is longer than usual. This extended stem is a strategic design choice, particularly beneficial in applications where thermal insulation is of significant importance.
The primary purpose of the extended stem is to protect the valve's operating components from exposure to extreme temperatures. By providing additional distance between the valve's internals and the heat source, the extended stem acts as a thermal barrier, preventing heat from adversely affecting the valve's performance.