when setting the acetylene pressure in advance of lighting the torch on an oxy - acetylene setup, some…

when setting the acetylene pressure in advance of lighting the torch on an oxy - acetylene setup, some acetylene may remain in the line. whats the best way to clear the acetylene?\nwith a shop - vac\nwith oxygen from the oxygen tank\nwith a pipe cleaner\nby shaking the acetylene hose back and forth
Answer
Answer:
None of the above options are correct. The best way is usually to open the acetylene valve slightly and let the acetylene flow out and burn off safely in a well - ventilated area.
Brief Explanations:
Using a shop - vac can create a dangerous situation as acetylene is flammable and explosive. Using oxygen from the tank to clear acetylene can cause a dangerous mixture. A pipe cleaner is not suitable for gas lines. Shaking the hose is ineffective. Burning off the acetylene in a controlled way is the proper method.