Plumbing Flashcards
What causes water hammer ?
- loose pipes
- instantaneously closing valves
- hydrostatic shock
A copper-to-steel connection undergoes a/an?
Electrolytic reaction
Name three common locations of cross connections in a plumbing system.
Bidet
Garden hose
Broiler connection
Name two locations to install a check valve in a house with a combination sewers to reduce the risk of backup into the basement
Floor drains and main drain line
The recommended slope for waste plumbing is typically ?
1/4” per foot
What type of trap is no longer used in residential construction ?
S-trap
Describe the function of a trap primer
To add water to the trap to replace water lost through evaporation.
The most common clue to venting problem is?
Sewer odor
Gurgling drains
Slow drains
A vent pipe does binned to extend past the attic .T/F
False
What is the minimum diameter and extension above the roof line of a vent pipe to prevent frost/snow closure?
3inch diameter and 6 inch above snow line
What is a wet vent ?
A vent that also serves as a drain
Describe a French drain or dry well
A buried gravel pit designed to allow water to accumulate quickly and dissipate slowly by soaking into the soil
A temperature pressure relief valve on a water heater that is installed above the tank in the pipe is wrong why?
Must be installed within the top 6 inches of the tank.
Temperature /pressure relief valves are typically rated at ?
150 psi and 210F
What is maximum length of a flexible gas appliance connector to a dryer or range ?
6 feet
