Plumbing Flashcards
Is a volumetric flow test required via NY SOP?
No
What is the typical water supply line in a home?
3/4
What are the typical interior distribution lines size?
1/2
True or false: The homeowner is responsible for the main supply line to the curb stop shut off?
True
True or false it is not advisable to operate the main shut off? Why
True, they are rarely operated
What is the main shut off valve called?
Gate valve
What is the size of the pipe going to the meter, coming from the meter, and the supplies of the home?
1 inch, 3/4, half-inch
Water lines before 1950 may have lead?
True
What is PVC used generally for
Cold water lines and drain’s
What rating is CPVC And what is it used for?
180° use for hot water supply
Where should the main shut off be located?
Right after the meter
Explain the flow test?
Starts farthest from the incoming supply, Tub, shower, sink run simultaneously, Then flush the toilet, look and listen for reduction
What is the life expectancy of galvanized pipe?
40 to 60 years
What color is CPVC and PVC?
CPVC is cream, pvc is white (not rated for hot water use)
How do you join copper, PVC, pex?
Copper is soldering, PVC is solvent weld it, pex is crimped
What time frame was lead pipe used?
1920s and 1930s
What are the federal regulations For lead paint
If it is more than 6 ft.² of painted interior surface, if any windows are replaced or 20 ft.² of exterior service was disturbed contractor must follow your lead safe working procedures.
How do you identify lead pipes?
Easily scratched, brown stains in water
What happens if you use water pipes as a ground?
The ground wire will accelerate the corrosion
How’s public drinking water treated?
Dirt, and particles are removed via coagulation, heavy particles are settled out of the water, remaining water is chlorinated.
How much lead is u safe?
10 micrograms of lead per deciliter
CPVC has the least resistance to freezing, true or false
True
Can a galvanized pipe shrink in size?
Yes from deposits
Define water hammer?
Sudden surge of pressure from shutting off a faucet
Define cross connection?
Connection between portable water (faucet) and possible source of contamination (liquid fertilizer attached to hose).
Where should exterior faucets be?
Front and rear or 10’ within front or rear portion of corners of home.
Name hot water tank fuels?
Oil, electric, propane, natural gas
What happens if h2o tank gets to hot?
Temp pressure relief/watts valve will relief pressure
Typical temp at faucet for hot water?
Not more than 120
Hot water tank pressure relief line must be how far from the floor?
4-6”
If hot water heater in garage it must be?
18” above floor, protected by bollards,
What type of wells are aloud today?
Rotary or hammer drilled wells
Can home inspector remove well cap?
Ni, only home owner or certified well driller
True or false: main plumbing vent should go thru the roof?
True
Where should be the plumbing vent located?
12’ away from opening, 3’ above
S traps are often not aloud in new construction, true or false?
True
Most public systems use gravity for waste water? True or false
True
All drains less then three inches must have a slope of?
1/4 per foot
