Unit 7- Tubing And Piping Flashcards Preview

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Flashcards in Unit 7- Tubing And Piping Deck (16)
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1
Q

The size indicated for the diameter of ACR copper tubing is the ______.

A

Outside diameter

2
Q

The maximum temperature at which soft soldering is done is

A

842 *F

3
Q

Brazing is done at _______ soldering

A

Higher temperatures than

4
Q

When soldering or brazing, the solder is

A

Melted by heat from the tubing and fitting

5
Q

Filler materials used in the high temperature connection of copper joints are composed of

A

15%-60% silver

6
Q

Molten solder flows between the 2 base metals being soldered because

A

Of capillary attraction

7
Q

The proper type of flame from an oxyacetylene torch for silver brazing is

A

Neutral flame

8
Q

When soldering why should flux be used?

A

Helps prevent oxidation
Helps keep pipes clean
Helps solder flow easy

9
Q

When soldering, flux should be applied to

A

The male part of the joint only

10
Q

For cleaning ACR copper tubing before soldering, a material that can be used is

A

Sand cloth

11
Q

Pipe treads are standardized by the ANS. ANS stands for

A

American National Standard

12
Q

Pipe threads, when used on pipes that will contain liquid or vapor under pressure,

A

Generally have a V shape

13
Q

When joining a steel pipe, a ______ should be applied to the threads before connecting.

A

Pipe dope

14
Q

T or F: k type copper is heavy duty with a thick tubing wall.

A

True

15
Q

T or F: L-type copper is considered medium weight and is used most frequently.

A

True

16
Q

T or F : M is a lightweight copper and is not commonly used in our industry.

A

True