PA Sprinkler Fitter Licensing Examination
Practice Questions And Correct Answers
(Verified Answers) Plus Rationales
1. What NFPA standard primarily governs the installation of automatic
sprinkler systems?
a) NFPA 54
b) NFPA 70
c) NFPA 13
d) NFPA 25
NFPA 13 is the standard for the installation of sprinkler systems,
while NFPA 25 is for inspection, testing, and maintenance.
2. What is the minimum required clearance between sprinkler deflectors
and the ceiling for standard spray sprinklers?
a) 6 inches
b) 24 inches
, c) 1 to 12 inches
d) 18 inches
Standard spray sprinklers must be installed with deflectors 1–12
inches below the ceiling, per NFPA 13.
3. Which type of sprinkler system uses air or nitrogen under pressure
instead of water in the piping?
a) Wet-pipe system
b) Dry-pipe system
c) Deluge system
d) Pre-action system
Dry-pipe systems use pressurized air/nitrogen to prevent freezing
until water is needed.
4. What is the maximum coverage area per standard spray upright or
pendent sprinkler in light hazard occupancies?
a) 200 ft²
b) 225 ft²
c) 225 ft²
d) 250 ft²
NFPA 13 specifies 225 ft² maximum per sprinkler for light hazard
occupancies.
5. In a wet-pipe sprinkler system, what keeps the water in the piping at
all times?
a) Air pressure
, b) Water pressure
c) Check valve only
d) Open heads
Wet systems always keep pipes filled with pressurized water, ready
for discharge.
6. Which fitting is commonly used for joining steel sprinkler pipes?
a) Solvent weld
b) Push-fit
c) Grooved coupling
d) Flare fitting
Grooved couplings are standard for steel sprinkler piping, allowing
flexibility and ease of installation.
7. What is the minimum pipe schedule required for a 2-inch sprinkler
main in Schedule 40 steel?
a) Schedule 10
b) Schedule 20
c) Schedule 40
d) Schedule 80
NFPA requires Schedule 40 for threaded steel pipes 2 inches and
smaller.
8. What is the primary function of an inspector’s test valve in a dry
system?
a) Relieves excess pressure
, b) Allows drainage
c) Simulates operation of a sprinkler
d) Supplies water to hose lines
The inspector’s test valve simulates a sprinkler head opening,
verifying system response.
9. Which tool is typically used to cut steel sprinkler pipe in the field?
a) Hacksaw
b) Pipe cutter
c) Reciprocating saw
d) Grinder
Pipe cutters are designed to cut steel pipe squarely and efficiently for
sprinkler installations.
10. What is the required minimum distance between sprinklers in
light hazard areas?
a) 6 feet
b) 10 feet
c) 12 feet
d) 15 feet
Minimum spacing is typically 10 feet, with some exceptions, to
ensure adequate coverage.
11. Which sprinkler system type has all heads open and operates
with a deluge valve?
a) Wet-pipe
Practice Questions And Correct Answers
(Verified Answers) Plus Rationales
1. What NFPA standard primarily governs the installation of automatic
sprinkler systems?
a) NFPA 54
b) NFPA 70
c) NFPA 13
d) NFPA 25
NFPA 13 is the standard for the installation of sprinkler systems,
while NFPA 25 is for inspection, testing, and maintenance.
2. What is the minimum required clearance between sprinkler deflectors
and the ceiling for standard spray sprinklers?
a) 6 inches
b) 24 inches
, c) 1 to 12 inches
d) 18 inches
Standard spray sprinklers must be installed with deflectors 1–12
inches below the ceiling, per NFPA 13.
3. Which type of sprinkler system uses air or nitrogen under pressure
instead of water in the piping?
a) Wet-pipe system
b) Dry-pipe system
c) Deluge system
d) Pre-action system
Dry-pipe systems use pressurized air/nitrogen to prevent freezing
until water is needed.
4. What is the maximum coverage area per standard spray upright or
pendent sprinkler in light hazard occupancies?
a) 200 ft²
b) 225 ft²
c) 225 ft²
d) 250 ft²
NFPA 13 specifies 225 ft² maximum per sprinkler for light hazard
occupancies.
5. In a wet-pipe sprinkler system, what keeps the water in the piping at
all times?
a) Air pressure
, b) Water pressure
c) Check valve only
d) Open heads
Wet systems always keep pipes filled with pressurized water, ready
for discharge.
6. Which fitting is commonly used for joining steel sprinkler pipes?
a) Solvent weld
b) Push-fit
c) Grooved coupling
d) Flare fitting
Grooved couplings are standard for steel sprinkler piping, allowing
flexibility and ease of installation.
7. What is the minimum pipe schedule required for a 2-inch sprinkler
main in Schedule 40 steel?
a) Schedule 10
b) Schedule 20
c) Schedule 40
d) Schedule 80
NFPA requires Schedule 40 for threaded steel pipes 2 inches and
smaller.
8. What is the primary function of an inspector’s test valve in a dry
system?
a) Relieves excess pressure
, b) Allows drainage
c) Simulates operation of a sprinkler
d) Supplies water to hose lines
The inspector’s test valve simulates a sprinkler head opening,
verifying system response.
9. Which tool is typically used to cut steel sprinkler pipe in the field?
a) Hacksaw
b) Pipe cutter
c) Reciprocating saw
d) Grinder
Pipe cutters are designed to cut steel pipe squarely and efficiently for
sprinkler installations.
10. What is the required minimum distance between sprinklers in
light hazard areas?
a) 6 feet
b) 10 feet
c) 12 feet
d) 15 feet
Minimum spacing is typically 10 feet, with some exceptions, to
ensure adequate coverage.
11. Which sprinkler system type has all heads open and operates
with a deluge valve?
a) Wet-pipe
