Copper Tube, Tubing And Fittings Flashcards
What is the symbol for copper?
Cu
Red brass consists of:
85% copper and 15% zinc
This brass color is mainly used for the production of standard valves, faucets, traps, etc.
Yellow brass
Which has better resistance to corrosion ?
A) red brass
B) yellow brass
A) red brass
Color code: Type K - Type L - Type M - Type H - Type DWV -
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)
Three joints used for copper tubing are:
Soldered, compression and flared
A flaring tool flares at what angle?
45° in the plumbing industry and 37° for auto applications
Copper type supplied in hard temper only:
Type M
Copper tube types used for above ground gas installations up to and including 1 1/4”
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
Copper tube types used for steam heating systems:
Type K and L
Where soft temper tube is desired, what copper type must be used?
Type K or L must be used
What is capillary action?
The flow of a liquid drawn into the small opening between wetted surfaces
50–50 solder indicates:
50% tin and 50% lead
95-5 solder indicates:
95% tin and 5% antimony
Two other names for mushy range:
A) Plastic
B) Pasty
Can a pocket knife be used to ream pipe?
Yes
Nine proper steps for making a good soldered joint:
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
Bronze consists of:
90% copper and 10% tin
Flare fittings create a stronger connection than soldered or compression fittings:
A) True
B) False
A) True
Soft soldering uses temperatures below:
575°C (1000°F)
Type K copper pipe is color coded _____ and has the _____ wall.
Green/thickest
You can tell the difference between a pressure fitting and DWV by the _____ .
Cup
Copper tube and tubing is what % pure copper?
99.7 % pure copper
In copper, SPS is referred to as?
Standard pipe size
