Copper

Question 1

How many types of copper is there

Answer 1

5

Question 2

Type K copper is?
Color
Lengths
Hard or soft

Answer 2

Green
Hard temper 12-20foot
Soft temper coil up too 100foot

Both

Question 3

Type L copper is
Color
Hard or soft tempers
Length

Answer 3

Blue
Hard &soft
Hard 12-20foot
Soft 60

Question 4

Type M copper is
Color
Tempers
Lengths

Answer 4

Red
Hard only
12-20foot

Question 5

Type H copper is
Color
Use

Answer 5

White

No longer available

Question 6

Type DWV copper is
Use
Color 
Lengths
Temper

Answer 6

Drainage
Yellow
12-20foot
Hard

Question 7

What type and Color of copper tubing may not be bent?

Answer 7

Type M

Red copper

Question 8

Three techniques for joining copper fittings are

Answer 8

Soldering
Compressing
Flaring

Question 9

What method for joining fittings to copper is the strongest

Answer 9

Double flair

Question 10

What type of copper with used for water service lines

Answer 10

Type K and type L

Question 11

Type of copper used for hot and cold water distribution lines

Answer 11

K
L
M

Question 12

Type of copper used for drainage soil and waste vent lines

Answer 12

DWV commonly

But also K
L
M

Question 13

Wire solder thickness is indicated by the______?

Answer 13

B&S . (Brown &and sharpe)
Wire gauge
Which is the same as the American wire gauge (AWG)

Question 14

What is the difference between copper pipe in copper tube.

Answer 14

Copper pipe is measured by the inner diameter but also the outer diameter

Copper tube has thinner walls than copper pipe and is measured from the inner diameter

Question 15

Copper tubing is a _____ temper

Answer 15

Soft

Question 16

Compression fittings are typically manufactured from________?

Answer 16

Barstock brass.

Question 17

Which joining technique for copper is the oldest and most widely used method

Answer 17

Soldering

Question 18

“hard soldering” is classified as Any soldering procedure that uses temperatures_________.

Answer 18

Above 575°C 1000°F

Question 19

Soft soldering is classified as any soldering procedure that uses temperatures_______.

Answer 19

Below 575°C 1000°F

Question 20

Before Sauders completely molten what is it referred to

Answer 20

Plastic or mushy stage

Question 21

Deciding factors for proper selection of Sauter are?

Answer 21

Max temperature of the fluid in tube

Pressure of the fluid’s

Tubing size

Question 22

High-pressure type of compression fittings are rated for

Answer 22

10,000 psi

Question 23

Three different types of flaring methods

Answer 23

SAE 37°
SAE 45°
inverted flare

Question 24

Capillory action is known as

Answer 24

The flow of liquid when it is drawn into a small opening between wetted surfaces

Question 25

Any lead bearing solder that has lead content in excess of 0.2% shall be used on possible waterlines
T or F

Answer 25

F

Question 26

Melting point of lead

Answer 26

327°C 620°F

Question 27

Melting point of tin

Answer 27

230°C 450°F

Question 28

All fluxes should do what three things

Answer 28

• Prevent oxidize Asian of the metals being joined
• Promote wetting of the metal
• Break up oxides and float them to the top of the joint

Question 29

Non-number on a torch tip indicates what

Answer 29

The tip size

BTU per hour

Question 30

Four types of torch fuel

Answer 30

1. acetylene
2. Propane
3. Butane
4. MAPP gas