What can happen if you do not purge with nitrogen while brazing?

A) You run the risk of an explosion.
B) Oxides inside the pipe can come loose and contaminate the system.
C) Leak checking will take longer.
D) The brazing will take longer without the extra heat from the nitrogen.


B

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What will be an ideal response?

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Fill in the blank(s) with the appropriate word(s).

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