Copper Tube, Tubing And Fittings

Question 1

What is the symbol for copper?

Answer 1

Cu

Question 2

Red brass consists of:

Answer 2

85% copper and 15% zinc

Question 3

This brass color is mainly used for the production of standard valves, faucets, traps, etc.

Answer 3

Yellow brass

Question 4

Which has better resistance to corrosion ?
A) red brass
B) yellow brass

Answer 4

A) red brass

Question 5

Color code:
Type K -
Type L -
Type M -
Type H -
Type DWV -

Answer 5

Color code:
Type K - Green (Kryptonite)
Type L - Blue (Labatt's Blue)
Type M - Red (Murder bloody red)
Type H - White (w H ite)
Type DWV - Yellow (Drink Whiskey & Vomit)

Question 6

Three joints used for copper tubing are:

Answer 6

Soldered, compression and flared

Question 7

A flaring tool flares at what angle?

Answer 7

45° in the plumbing industry and 37° for auto applications

Question 8

Copper type supplied in hard temper only:

Answer 8

Type M

Question 9

Copper tube types used for above ground gas installations up to and including 1 1/4”

Answer 9

Type K or L copper tube or type G copper tubing
*For underground services, either type L or G with externally coded extruded PVC resin at the time of manufacturing or type K must be used

Question 10

Copper tube types used for steam heating systems:

Answer 10

Type K and L

Question 11

Where soft temper tube is desired, what copper type must be used?

Answer 11

Type K or L must be used

Question 12

What is capillary action?

Answer 12

The flow of a liquid drawn into the small opening between wetted surfaces

Question 13

50–50 solder indicates:

Answer 13

50% tin and 50% lead

Question 14

95-5 solder indicates:

Answer 14

95% tin and 5% antimony

Question 15

Two other names for mushy range:

Answer 15

A) Plastic

B) Pasty

Question 16

Can a pocket knife be used to ream pipe?

Answer 16

Yes

Question 17

Nine proper steps for making a good soldered joint:

Answer 17

1) Measure
2) Mark
3) Cut
4) Ream
5) Clean tube and fitting
6) Flux tube and fitting
7) Assemble and heat
8) Solder
9) Wipe clean

Question 18

Bronze consists of:

Answer 18

90% copper and 10% tin

Question 19

Flare fittings create a stronger connection than soldered or compression fittings:
A) True
B) False

Answer 19

A) True

Question 20

Soft soldering uses temperatures below:

Answer 20

575°C (1000°F)

Question 21

Type K copper pipe is color coded _____ and has the _____ wall.

Answer 21

Green/thickest

Question 22

You can tell the difference between a pressure fitting and DWV by the _____ .

Answer 22

Cup

Question 23

Copper tube and tubing is what % pure copper?

Answer 23

99.7 % pure copper

Question 24

In copper, SPS is referred to as?

Answer 24

Standard pipe size