Plumbing Flashcards
Types of materials for pipes and fittings
Cast iron
Galvanized steel
Copper
Plastic
Types of plastic pipes
PVC
CPVC
PEX
ABS
Temperature limits of PVC and CPVC
PVC: 140 deg F
CPVC: 200 deg F
When joining PVC, how much do you turn after bottoming out?
Quarter turn
Forms of copper pipe
Rigid
Drawn
What do you need when joining two dissimilar metals?
Dielectric union
What are the maximum horizontal and vertical supports for PEX?
Horizontal 32”
Vertical 10’
What are the components of a plumbing system?
Drain
Waste
Vent
Where should vent joints be placed?
Above the highest fixture
What are the minimum code clearances for toilets?
Minimum 12” from finished wall to center of the flange
Minimum 15” from the side wall
Account for thickness of wall sheathing materials
Types of vents
True vent
Revent
Wet vent
What are the minimum sizes of vent pipes?
- Never less than 1-1/4”
- 2” for single toilet
- 3” for more than two toilets
- Must be at least half the diameter of the drain pipe it serves
Where should vent pipes be placed to be effective?
Within a critical distance of the fixtures they serve
What is the slope of vent pipes?
1/4” per foot
What is the purpose of traps?
To prevent sewer gases from coming up through the fixture and entering the house
Where are cleanouts placed?
At easily accessible locations along waste lines
Types of faucets
Ball
Compression
Disc
Cartridge
Which component of water heaters prevents corrosion?
Anode rod
What material are anode rods typically made of?
Magnesium
What size are supply lines to/from the water heater?
3/4”
What size are supply lines in the rest of the house besides to/from the water heater?
1/2”
Which heating element in the water heater should be replaced when the water is warm but not hot?
Top element
Which heating element in the water heater should be replaced if the water is hot then cold?
Bottom element
How is the size of the septic system determined?
Number of rooms in the structure
