ERA

Sealing caps, not of metal; screws, not of metal; water-pipe valves of plastic; valves of plastic being other than machine parts; non-metal valves for containers; angle valves of plastics, other than parts of machines; valves of plastic, namely, drain traps; non-metallic ball valves, namely, manually operated ceramic ball valves other than parts of machines; plastic ducts and couplings for organizing and holding cable and wiring