Turn valves to regulate flow of liquids or air, to reverse machines, to start pumps, or to regulate equipment.
- 51-6091.00 Extruding and Forming Machine Setters, Operators, and Tenders, Synthetic and Glass Fibers
- 51-9032.00 Cutting and Slicing Machine Setters, Operators, and Tenders
- 51-4081.00 Multiple Machine Tool Setters, Operators, and Tenders, Metal and Plastic
- 51-9012.00 Separating, Filtering, Clarifying, Precipitating, and Still Machine Setters, Operators, and Tenders
- 51-8021.00 Stationary Engineers and Boiler Operators
