Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
The standard weight for copper tubing used most frequently in the heating and air conditioning industry is? |
L - Type |
|
|
The size of 1/2 in. Would refer to the _______ with regard to copper tubing used in plumbing and heating. |
(ID) Inside Diameter |
|
|
The size of 1/2 in. Would refer to the _______ with regard to ACR copper tubing. |
(OD) Outside Diameter |
|
|
Tubing used for air conditioning installation is usually insulated at |
The low pressure side. |
|
|
The portion of a compression fitting that actually tightens against the tubing to create the leak - free seal is the |
Ring or ferrule |
|
|
What is the most common cause of leaking compression fittings? |
Over tightening the compression unit. |
|
|
Brazing is done at_______ for soldering. |
Higher temperature than those used |
|
|
A common filler material used for brazing is composed of |
50% to 60% silver |
|
|
When soldering, a flux is used to |
Minimize oxidation while the joint is being heated |
|
|
What should you do if you see or suspect a crack in a flared joint? |
Cut it off do it again |
|
|
Describe procedures for bending soft copper tubing. |
Use a large radius bend as possible, All areas of the tubing must remain round, do not allow it to flatten or kink, carefully bend the tubing, gradually working around the radius. |
|
|
What type of solder is suitable for moderate temperatures and pressures? |
The 50/50 tin lead solder |
