Question

When brazing on a refrigeration line with an attached service valve, What should be done?

1) The service valve should be closed
2) The service valve should be opened
3) The refrigeration line should be disconnected
4) The brazing should not be done

Answer 1

When brazing on a refrigeration line with an attached service valve, the service valve should be closed to create a closed system.

Step-by-step explanation:

When brazing on a refrigeration line with an attached service valve, it is important to close the service valve before starting the brazing process. This will prevent any refrigerant or air from flowing through the line and potentially causing damage to the brazed joint. By closing the service valve, you create a closed system that ensures the brazing is done correctly.