Job Description:

• 1) Rebuilds safety and flow valves used on compressed and liquefied gas cylinders, drums, or railway cars: Disassembles valve, using bench vise and handtools.

• 2) Inspects components for surface flaws, and defects in stem and threads.

• 3) Reams valve seats with hand reamer and dresses threads with tap and die.

• 4) Immerses parts in cleaning solution and reassembles valve.

• 5) Dips valve in molten lead, using tongs, to prevent leakage.

• 6) Attaches valve and fusible plug to high-pressure gasline, submerges it in water, and observes for bubbles to test valve and plug for leaks.

• 7) Melts out defective plugs, scrapes hole clean, and pours in new metal.

• 8) Records number of valves tested and test results.

• 9) May attach gauge and open air valve to test filled cylinders for pressure.

• 10) May brush or spray chemical solution around valves to test filled cylinders for leaks.

• 11) May fill cylinders.