Correct Answers.
The lower check valve - Correct Answer Prevents the back flow of the private water supply
into the public water supply
O.S.&Y valve - Correct Answer Is used to shut down a part or an entire standpipe/sprinkler
system
Automatic dry-pipe sprinkler system are - Correct Answer Installs in areas subject to
freezing temperature and filled with pressurized air
Sprinkler buster pumps - Correct Answer Are installed for the purpose of boosting the city
water pressure in the sprinkler system
The vertical turbine pumps - Correct Answer Is able to draw water from wells streams and
ponds and is modified centrifugal pump
What is the required minimum capacity of an air compressor used for a pressure tank
installation - Correct Answer Compressing the air in the tank to a pressure of 75 psig in 3
hours
Combined dry-pipe and pre-action system - Correct Answer Contain air under pressure in
the system piping
The hydrostatic standpipe system pressure test is to be conducted every - Correct Answer
5 years
Automatic fill pumps Aka house pumps are - Correct Answer Usually of centrifugal non-
positive displacement type
Sprinkler heads with a temperature , rating of 135f to 170f are color coded in what color -
Correct Answer Uncolored
Gravity tank should be installed how many feet above the highest fire hose outlet which
they supply - Correct Answer 25 feet
, What is the minimum pressure required at the top of the sprinkler riser when a direct
connection to a city main is made - Correct Answer 15 psig
What is the minimum required water temperature in gravity tanks - Correct Answer 40F
You can determine very quickly if an O.S&Y valve is open when - Correct Answer The
valve stem is fully showing
Gravity tanks, aka house tanks can be made of - Correct Answer Concrete , wood, steel
Water level and air pressure in pressure tanks should be inspected every - Correct Answer
Month
What is the color of Siamese connection used for a combination standpipe-sprinkler
system - Correct Answer Yellow
Fire pump rooms should be - Correct Answer Well lit and ventilated
3hour fire-rated
A loaded sprinkler head should be - Correct Answer Replaced immediately
Sprinkler heads used in areas where they could be exposed to corrosive condition shall be
protected by adding a coat of - Correct Answer Wax
Inspection of a garbage compactor sprinkler systems should be done - Correct Answer
Monthly
Ice build-up on the gravity tank - Correct Answer Can cause tank collapse
During freezing wether the temperature of the water inside the gravity tank must be checks
- Correct Answer Daily
How many Siamese connection must be installed in all standpipe systems - Correct
Answer At least one