Metal valves not being parts of machines; manually operated metal fluid control valves; manually operated metal ball valves; manually operated metal valves, metal flanges, metal pipes and pipe fittings therefor, namely, manually operated multi turn and quarter turn valves, manually operated valves for use in metal piping systems, and metal tubes for the aforementioned products; Piping systems comprised primarily of metal flanges, metal pipes and tubes, metal pipe fittings