Metal pipe fittings consisting of couplings, joints, connectors, unions, adapters, and mechanical valves other than parts of machines; Manually operated metal valves, not being parts of machines; Metal tubing, metal elbows for pipes, metal tees for pipes, metal wye fittings for pipes, metal caps for pipes, and metal reducers for pipes
Metal GoodsPlumbing fittings, namely, valves, tees, unions, couplings, pipe thread adapters and elbows; Plumbing fittings, namely, valves, tees, unions, couplings, pipe thread adapters and elbows, all to be used in air and gas systems
Environmental Control Apparatus