Plumbing Flashcards
Which pipe/line exhausts sewer gases and provides the air pressure to allow waste to flow freely?
The vent line
What is the proper fall in inches, for a waste line that is 48 feet in length?
12 inches
What is the ring called that goes between the toilet and the floor flange that prevents water from leaking?
The wax ring
What is one of the main disadvantages of cast iron when used as a waste line?
Heavy and difficult to fit
What is the name of the union used to join a copper pipe to a galvanized pipe to prevent damage to the pipe?
Dielectric union
What are the four types of faucets most commonly used in sinks today?
Disk
Ball
Compression
Cartridge
What is the major function of the drain/leach field of a septic tank system?
To send effluent or waste into the soil for filtering
When draining two water closets what is the size of the vent line?
3 inch pipe
Which sink drain line trap flows through the floor and out into the waste line under the house?
The S-trap
Which sink drain line trap flows through the wall and out into the waste line under the house?
The P-trap
What are the four basic group of pipes?
Cast-iron
Galvanized steel/iron
Copper
Plastic
Can you join cast-iron with PVC piping?
Yes
What is cast-iron pipes exclusively used for?
Drain system
What are the three schedule used for PVC?
Schedule 40, 60 and 80.
The higher the schedule the thicker the wall of the pipe.
What is the only use for PVC pipe?
Cold water line
What is the main advantage of plastic pipe?
Joining PVC pipes quick and simple but the cut must be reasonably straight
What type of primer should be used on PVC and CPVC pipes before applying cement?
Purple primer
What are the advantages and disadvantages of the CPVC pipes?
Withstand high temperature
Expensive
What are the diameters used for CPVC pipes?
3/8’’, 1/2’’, 3/4’’ and 1’’
What are the three components of a septic tank system?
Septic tank
Distro box
Leach field
What are the advantages of using copper piping?
Resist corrosion
Smooth surface gives a good flow
Durable
What are the three types of copper pipe?
M (red letter) most thin and least expensive
L (blue letter)
K used for underground water lines
What are the two types of gas used for soldering?
Propane
App gas
What are the advantages of PEX pipes?
Easy to install and transport Good insulation Quiet Good for retrofit jobs Freeze resistant
What are some of the codes relative to PEX piping?
Maximum horizontal support 32’’
Maximum vertical support 10’’
Withstand up to 210 F for 48H continuously
What are the minimum dimensions to the left and right of the toilets?
15 inches
What is the minimum distance from the center of the flinge to the back wall of the toilet?
12 inches
What are the conditions for the DWV tree to operate properly and safely?
Each drain must be served by a vent
Several vents may be connected together
The vent line must be 6’’ above the highest flood line to be connected to an existing vent line
What is the drop ratio for a drain line?
1/4’’ per foot
What is the minimum diameter for a vent line?
1 1/4’’
Should never only be half of the diameter of the waste pipe it is serving
What are the dimension of a vent line serving toilets?
2’’ for a single toilet
3’’ for two or more toilets
What are the three types of venting system?
Wet
Auxiliary
Direct
What is the stack vent?
It is where the vent pipes are exiting the roof?
What is a trap?
A trap is a curved section of a drain pipe that fills up with water providing a seal
