1|Page
S12 FDNY EXAM LATEST 2026 ACTUAL EXAM WITH COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS (100% VERIFIED
ANSWERS) |ALREADY GRADED A+| ||PROFESSOR VERIFIED||
||BRANDNEW!!!||
A valve designed for the purpose of reducing the downstream
water pressure under both flowing (residual) and non flowing
(static) conditions. - ANSWER-Pressure-Reducing Valve
A device designed to reduce, regulate, control or restrict water
pressure. - ANSWER-Pressure Regulating Devices
A device that relieves excess water or air pressure from fire
protection piping systems. - ANSWER-Pressure Relief Valve
A tank using air pressure to supply water to fire protection
systems. (1/3 air 2/3 water). - ANSWER-Pressure Tank
A system where fire protection piping services both 2 1/2in outlets
for fire department use and outlets for automatic sprinklers. -
ANSWER-Combination Standpipe & Sprinkler System
,2|Page
A standpipe system that is vertically subdivided as required by
code into multiple zones in order to limit the maximum operating
pressure. Each zone will have its own individual automatic water
supply. - ANSWER-Standpipe, Multi-Zone
Measure of system pressure under non flow conditions. -
ANSWER-Static Pressure
A device capable of removing all solids of sufficient size from
water. - ANSWER-Strainer
A surge in pressure when a high velocity flow of water is abruptly
shut off. Can be 7 or more times the static Pressure. - ANSWER-
Water Hammer
A standpipe system having piping containing water at all times. -
ANSWER-Wet standpipe system
Used only by fire fighters. Hoses are 2 1/2" in diameter. -
ANSWER-Class 1 Standpipe system
,3|Page
Used by occupancy of building in case of fire. Hoses are 1 1/2" in
diameter. - ANSWER-Class 2 Standpipe system
Used by occupancy of building or fire fighters. Hose can be
adjusted to either 1 1/2" to 2 1/2" in diameter. - ANSWER-Class 3
Standpipe system
Can be used to increase pressure in a standpipe system. -
ANSWER-Fire Pump
In a dry pipe system there is a delay between the opening of a
sprinkler head or standpipe nozzle and the discharge of water.
Delay is due to time required for air to leave the systems piping. -
ANSWER-Quick Opening Devices
Standpipe Systems are required in buildings that are over 75 feet
in height. - ANSWER-Standpipe Systems
, 4|Page
Pressure restricting device shall be installed at each hose outlet
where the static Pressure exceeds 80 psi. - ANSWER-Pressure
restricting device
Used to prevent water from flowing the opposite direction. -
ANSWER-Check Valve
Allows full unobstructed flow and automatically closes when
pressure is decreased. Fully closed when pressure reaches zero
and prevents back flow. - ANSWER-Swing Check Valve
A type of control valve for a sprinkler system in which the position
of the center screw indicates whether the valve is open or closed.
- ANSWER-Control valve for a sprinkler system
A type of valve used in fire sprinkler systems. - ANSWER-OS&Y
(Outside Stem and yolk) Valve
When the sprinkler head opens it causes a drop of pressure in the
piping. - ANSWER-Drop of pressure
S12 FDNY EXAM LATEST 2026 ACTUAL EXAM WITH COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS (100% VERIFIED
ANSWERS) |ALREADY GRADED A+| ||PROFESSOR VERIFIED||
||BRANDNEW!!!||
A valve designed for the purpose of reducing the downstream
water pressure under both flowing (residual) and non flowing
(static) conditions. - ANSWER-Pressure-Reducing Valve
A device designed to reduce, regulate, control or restrict water
pressure. - ANSWER-Pressure Regulating Devices
A device that relieves excess water or air pressure from fire
protection piping systems. - ANSWER-Pressure Relief Valve
A tank using air pressure to supply water to fire protection
systems. (1/3 air 2/3 water). - ANSWER-Pressure Tank
A system where fire protection piping services both 2 1/2in outlets
for fire department use and outlets for automatic sprinklers. -
ANSWER-Combination Standpipe & Sprinkler System
,2|Page
A standpipe system that is vertically subdivided as required by
code into multiple zones in order to limit the maximum operating
pressure. Each zone will have its own individual automatic water
supply. - ANSWER-Standpipe, Multi-Zone
Measure of system pressure under non flow conditions. -
ANSWER-Static Pressure
A device capable of removing all solids of sufficient size from
water. - ANSWER-Strainer
A surge in pressure when a high velocity flow of water is abruptly
shut off. Can be 7 or more times the static Pressure. - ANSWER-
Water Hammer
A standpipe system having piping containing water at all times. -
ANSWER-Wet standpipe system
Used only by fire fighters. Hoses are 2 1/2" in diameter. -
ANSWER-Class 1 Standpipe system
,3|Page
Used by occupancy of building in case of fire. Hoses are 1 1/2" in
diameter. - ANSWER-Class 2 Standpipe system
Used by occupancy of building or fire fighters. Hose can be
adjusted to either 1 1/2" to 2 1/2" in diameter. - ANSWER-Class 3
Standpipe system
Can be used to increase pressure in a standpipe system. -
ANSWER-Fire Pump
In a dry pipe system there is a delay between the opening of a
sprinkler head or standpipe nozzle and the discharge of water.
Delay is due to time required for air to leave the systems piping. -
ANSWER-Quick Opening Devices
Standpipe Systems are required in buildings that are over 75 feet
in height. - ANSWER-Standpipe Systems
, 4|Page
Pressure restricting device shall be installed at each hose outlet
where the static Pressure exceeds 80 psi. - ANSWER-Pressure
restricting device
Used to prevent water from flowing the opposite direction. -
ANSWER-Check Valve
Allows full unobstructed flow and automatically closes when
pressure is decreased. Fully closed when pressure reaches zero
and prevents back flow. - ANSWER-Swing Check Valve
A type of control valve for a sprinkler system in which the position
of the center screw indicates whether the valve is open or closed.
- ANSWER-Control valve for a sprinkler system
A type of valve used in fire sprinkler systems. - ANSWER-OS&Y
(Outside Stem and yolk) Valve
When the sprinkler head opens it causes a drop of pressure in the
piping. - ANSWER-Drop of pressure
