Quiz_________________?
Alarm Retarding Devices -
Answer✅
An alarm check valve that is exposed to changing water supply pressure needs an alarm
retarding device. This is required to prevent false alarms when the check valve clapper is
lifted from its seat by a temporary pressure surge. Vane type water flow switches sensitivity
can also be adjusted to changing water pressures.
Quiz_________________?
blue disk -
Answer✅
partially out of service- on all fire department connections
Quiz_________________?
Booster pumps/special service pumps -
Answer✅
Booster pumps are sometimes used in sprinkler systems. They small pumps with limited
power are usually located in the basement or taking suction from gravity tanks. The booster
pump is used when the water pressure available at the highest sprinkler head does not quite
meet the needs of the sprinkler system. This small pump increases the water pressure in the
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, sprinkler system until it reaches acceptable levels. The booster pump should not be
confused with the fire pump or the jockey pump.
Quiz_________________?
Curb Valves -
Answer✅
Gate valves of the non-indicating type are provided in water distribution systems. Gate
valves allow the sprinkler system to be shut off for repairs or maintenance. Such valves are
normally a non-rising stem type. They are operated using a special key wrench. A valve box
is located over the valve to keep dirt from the valve. The valve box also provides a
convenient access point for the valve wrench to the valve nut. A complete record should be
made for each valve in the system. This record should include the exact location, the date it
was installed, the make, the direction of opening, number of turns to open, and any
maintenance that was performed.
The control valve for the building may also be on the outside wall or attached to an upright
post, known as a post indicator valve (PIV). The building or section of the building
controlled by the valve is usually marked on the post. The position of this valve (open or
closed) is shown through a telltale opening in the post. On some posts, a padlock must first
be opened to release the operating wrench or wheel handle.
Quiz_________________?
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.
Quiz_________________?
DELUGE SPRINKLER SYSTEMS -
Answer✅
equipped with open sprinkler heads designed to wet down an entire area involved in a fire.
This system is needed when there is danger of a fire rapidly spreading throughout the
building. The deluge system will slow down the spread of the fire. Deluge systems are
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, suitable for hazardous occupancies. This includes buildings in which flammable liquids or
other hazardous materials are handled or stored.
The sprinkler heads in the deluge system are open at all times. Under normal conditions
there is no water in the piping. The air in the piping is not under pressure. A closed control
valve prevents water from flowing into the system. A fire detection device automatically
opens the control valve when a fire is identified. A supervisory device signals when the valve
is opened. When the valve is opened water flows into the system. The water is then
discharged out all of the sprinkler heads. The water control valve may also be opened
manually.
Quiz_________________?
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
Quiz_________________?
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
Quiz_________________?
extended coverage sprinkler -
Answer✅
400 max square feet discharge
Quiz_________________?
extra large orifice sprinklers -
Answer✅
= or > 1 inch less pressure to achieve a given discharge density
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