S12 FDNY EXAM COMPREHENSIVE STUDY
GUIDE 2026 PRACTICE QUESTIONS AND
ACCURATE ANSWERS GRADED A+
◉ blue disk Answer: partially out of service- on all fire department
connections
◉ water storage tank Answer: Collects cooled water
◉ OS & Y valve Answer: indicating type of control valve used for fire
sprinkler system
◉ deluge valve Answer: water supply control valve intended to be
operated by actuation of an automatic detection system that is
installed in the same area as the discharge devices. INTENDED USE
IS MANUAL AND AUTO
◉ deluge sprinkler system Answer: employing open sprinklers that
are attached to a piping system that is connected to a water supply
through a valve that is opened by the operation of a detection system
installed in the same areas as the sprinklers. WHEN IT OPENS, water
flows into the piping system and discharges from all sprinklers
attached.
, ◉ Early suppresion fast response sprinklers Answer: fast response
sprinkler that is listed for its capability to provide fire suppression
of specific high challenge fire hazards
◉ extra large orifice sprinklers Answer: = or > 1 inch less pressure
to achieve a given discharge density
◉ extended coverage sprinkler Answer: 400 max square feet
discharge 20 foot by 20 foot spacing between sprinklers
◉ fire pump Answer: a provider of liquid flow and pressure
dedicated to fire protection. A fire pump is a part of a fire sprinklers
system water supply and can be powered by electric, diesel or
steam. connected to public water source or tank. provides higher
pressure to sprinkler system
◉ Glass bulb sprinkler Answer: operated by heat breaking a glass
bulb filled with a non freezing liquid with diameters that vary form 3
mm for quick response to 5 mm for standard response
◉ hose valve Answer: valve to additional hose connection
◉ hydraulic placard Answer: sign attached to a hydraulically
calculated sprinkler system indicating the design density, required
gallons per minute and pressure for the system to operate properly
GUIDE 2026 PRACTICE QUESTIONS AND
ACCURATE ANSWERS GRADED A+
◉ blue disk Answer: partially out of service- on all fire department
connections
◉ water storage tank Answer: Collects cooled water
◉ OS & Y valve Answer: indicating type of control valve used for fire
sprinkler system
◉ deluge valve Answer: water supply control valve intended to be
operated by actuation of an automatic detection system that is
installed in the same area as the discharge devices. INTENDED USE
IS MANUAL AND AUTO
◉ deluge sprinkler system Answer: employing open sprinklers that
are attached to a piping system that is connected to a water supply
through a valve that is opened by the operation of a detection system
installed in the same areas as the sprinklers. WHEN IT OPENS, water
flows into the piping system and discharges from all sprinklers
attached.
, ◉ Early suppresion fast response sprinklers Answer: fast response
sprinkler that is listed for its capability to provide fire suppression
of specific high challenge fire hazards
◉ extra large orifice sprinklers Answer: = or > 1 inch less pressure
to achieve a given discharge density
◉ extended coverage sprinkler Answer: 400 max square feet
discharge 20 foot by 20 foot spacing between sprinklers
◉ fire pump Answer: a provider of liquid flow and pressure
dedicated to fire protection. A fire pump is a part of a fire sprinklers
system water supply and can be powered by electric, diesel or
steam. connected to public water source or tank. provides higher
pressure to sprinkler system
◉ Glass bulb sprinkler Answer: operated by heat breaking a glass
bulb filled with a non freezing liquid with diameters that vary form 3
mm for quick response to 5 mm for standard response
◉ hose valve Answer: valve to additional hose connection
◉ hydraulic placard Answer: sign attached to a hydraulically
calculated sprinkler system indicating the design density, required
gallons per minute and pressure for the system to operate properly
