STEELOK

Metal pipe fittings consisting of couplings, joints, connectors, unions, adapters, and mechanical valves other than parts of machines; manually operated metal valves; metal tubing, metal elbows for pipes, metal tees for pipes, metal wye fittings for pipes, metal caps for pipes, and metal reducers for pipes

Plumbing fittings, namely, valves, tees, unions, couplings, pipe thread adapters and elbows