©THESTAR 2024/2025 ALL RIGHTS RESERVED 11:09PM. A+
RV PLUMBING Exam Questions With Correct
Answers 100% Verified.
What are the two purposes of the RV plumbing system? - Answer✔To supply hot and cold
potable water.
To provide a means of disposing of wastewater at each fixture in a sanitary manner.
Explain how the RV plumbing system is different from that found in a house. - Answer✔Both
the water distribution and wastewater system are usually self-contained in that the RV has both
an on-board source of water and onboard means for storage for waste.
what type of plastic pipe is normally used in RV drainage systems? - Answer✔ABS. acrylonitrile-
butadiene-styrene
What color of piping is used on RV drainage systems? - Answer✔usually black but it can be
white.
What does DWV stand for? - Answer✔Drain, waste, vent
how is DWV piping sized? - Answer✔The wall thickness of the pipe
What is the typical schedule size for ABS DWV piping used in RV's ? - Answer✔schedule 40 or
equivalent
What are the five major components of a water distribution system? - Answer✔Piping system
Freshwater storage system
Water Pump
Faucets
Water heater
1
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 11:09PM. A+
Explain what "listed" means - Answer✔Listed means that equipment or materials have been
tested and evaluated and are suitable for which they are to be used.
List two things required for an RV water distribution system - Answer✔A source of fresh water
A means of providing pressure
List the four types of water systems used in RVs - Answer✔City water pressure
Demand pump pressure system
Manual pump system
Air pressurized system
What is the function of a check valve - Answer✔Prevents water from back flowing into the
pump or storage tank
Can copper be used for RV water distribution systems? - Answer✔Yes. copper tubing may be
used in older RV's or high end expensive Rv's.
How many types of plumbing system tanks are usually found on an RV and what are they? -
Answer✔Three
Freshwater storage tank
liquid waste holding tank (graywater)
solid waste holding tank (black water)
Can PVC piping be used for for RV system drainage piping? - Answer✔Yes. It rarely is because it
is more brittle in cold weather.
What document establishes the plumbing requirements for RV'S? - Answer✔NFPA 1192
standard for recreational vehicles
True/False
According to NFPA 1192 every fixture in the drainage system and every holding tank is required
to be vented. - Answer✔True
Can an anti siphon trap vent device be substituted for a primary vent? - Answer✔No
What is an accumulator? - Answer✔A device that decreases water pulsation and the rapid one-
off pump operation.
2
RV PLUMBING Exam Questions With Correct
Answers 100% Verified.
What are the two purposes of the RV plumbing system? - Answer✔To supply hot and cold
potable water.
To provide a means of disposing of wastewater at each fixture in a sanitary manner.
Explain how the RV plumbing system is different from that found in a house. - Answer✔Both
the water distribution and wastewater system are usually self-contained in that the RV has both
an on-board source of water and onboard means for storage for waste.
what type of plastic pipe is normally used in RV drainage systems? - Answer✔ABS. acrylonitrile-
butadiene-styrene
What color of piping is used on RV drainage systems? - Answer✔usually black but it can be
white.
What does DWV stand for? - Answer✔Drain, waste, vent
how is DWV piping sized? - Answer✔The wall thickness of the pipe
What is the typical schedule size for ABS DWV piping used in RV's ? - Answer✔schedule 40 or
equivalent
What are the five major components of a water distribution system? - Answer✔Piping system
Freshwater storage system
Water Pump
Faucets
Water heater
1
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 11:09PM. A+
Explain what "listed" means - Answer✔Listed means that equipment or materials have been
tested and evaluated and are suitable for which they are to be used.
List two things required for an RV water distribution system - Answer✔A source of fresh water
A means of providing pressure
List the four types of water systems used in RVs - Answer✔City water pressure
Demand pump pressure system
Manual pump system
Air pressurized system
What is the function of a check valve - Answer✔Prevents water from back flowing into the
pump or storage tank
Can copper be used for RV water distribution systems? - Answer✔Yes. copper tubing may be
used in older RV's or high end expensive Rv's.
How many types of plumbing system tanks are usually found on an RV and what are they? -
Answer✔Three
Freshwater storage tank
liquid waste holding tank (graywater)
solid waste holding tank (black water)
Can PVC piping be used for for RV system drainage piping? - Answer✔Yes. It rarely is because it
is more brittle in cold weather.
What document establishes the plumbing requirements for RV'S? - Answer✔NFPA 1192
standard for recreational vehicles
True/False
According to NFPA 1192 every fixture in the drainage system and every holding tank is required
to be vented. - Answer✔True
Can an anti siphon trap vent device be substituted for a primary vent? - Answer✔No
What is an accumulator? - Answer✔A device that decreases water pulsation and the rapid one-
off pump operation.
2
