A professional who performs any combination of following tasks in establishment making compressed and liquefied gas. Respnsibilities include:

• Loads cylinders or ton containers on vehicles, using handtruck or chain hoist, and records type and quantity of cylinders.
• Examines returned cylinders for surface defects, such as dents, cracks, and burns, and rolls cylinders to designated work area.
• Removes valves and installs reconditioned valves on cylinders, using wrenches.
• Connects exhaust manifold to cylinders and turns valve to draw off residual gas.
• Bounces or hammers cylinders to loosen rust and scale, and inserts water, steam, and air nozzles and turns valves to clean and dry cylinders.
• Tests filled cylinders for leaks by brushing or spraying chemical solution around valve.
• Weighs filled cylinders on platform scale and records weight.
• Screws protection cap over valve and ties warning and identification tags on cylinder.
• Wraps cakes of dry ice in paper and stores them in icehouse.
• May clean cylinder exteriors with wire brush.
• May place cylinders on heating rack to expand gas to ensure complete removal.
• May be known according to work performed as blow-off worker; cylinder handler; cylinder valver; hoist-cylinder loader; ice handler; valve steamer.
• May be designated: cylinder checker; cylinder devalver; cylinder steamer; ton-container shipper.