Not a bad description, but I do think the title should be modified to indicate that the article refers to thermionic valves, which are more commonly referred to

Not a bad description, but I do think the title should be modified to indicate that the article refers to thermionic valves, which are more commonly referred to as "vacuum tubes." I saw the title and thought "hmm, gate valves? globe valves? pilot-operated relief valves? heart valves perhaps?"