Set up and operate machines to fabricate ornamental metal products.
Tends equipment to fill cylinders and other containers with liquefied or compressed gases: Changes cylinder valves with wrench, or adjusts them to prescribed tension, using torque wrench. Rolls cylinders onto platform scale, or positions cylinders in manifold racks manually or with chain hoist. Connects lines from manifold to cylinders, using wrench. Fills cylinders by any of following methods: Sets pressure gauge to specified reading and listens for buzzer indicating completion of filling. Adjusts valves and observes gauge to fill cylinders to specified pressure. Observes scale indicator to fill cylinders to specified weight. Fills cylinder to excess, rolls cylinder onto scale, and connects exhaust line to release excess gas and attain prescribed gross weight. Sprays or brushes chemical solution onto cylinder valve to test for leaks. Fills out and attaches warning and identification tags or decals, specifying tare and gross weight, cylinder number, type of gas, and date filled, and records data. May test gas for purity, using burette or other testing equipment. May inspect or test empty cylinder [CYLINDER INSPECTOR-AND-TESTER]. May evacuate residual gases from cylinders. May test filled cylinders for specified gas pressure by connecting gauge and comparing reading with chart. May tend and maintain generator or compressor in filling process. May be designated according to type of container filled as Ton-Container Filler; Tube-Trailer Filler.