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Author Question: What is the purpose of purging with nitrogen while brazing? A) To help the flame burn a little ... (Read 24 times)

vicotolentino

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on: Jul 24, 2018
What is the purpose of purging with nitrogen while brazing?
 
  A) To help the flame burn a little hotter
  B) To check for leaks at the same time you are brazing
  C) To blow the oxides off the walls before it has a chance to firmly adhere
  D) To prevent oxide formation inside the pipes

Question 2

The most efficient operation is achieved with:
 
  A) Thermostatic expansion valves. B) Orifice-type metering devices.
  C) Automatic expansion valves. D) Capillary tubes.


Tabitha_2016

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Reply #1 on: Jul 24, 2018
Answer to Question 1

D

Answer to Question 2

A


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vicotolentino

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Reply #2 on: Jul 24, 2018
TY


Tabitha_2016

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Reply #3 on: Jul 24, 2018
You're welcome


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