Mounting Positions
Heads
Components
Temperature Ratings
Misc.
100
The method of mounting:
What is Pendant?
100
This is the working end of the sprinkler systems.
What is the sprinkler?
100
The NFPA terminology for the opening on an automatic sprinkler head.
What is an orifice?
100
If the rating is too low for the ambient air temperature, _____________ may occur.
What is accidental activations?
100
This is the color rating of a standard sprinkler head.
What is Uncolored or black?
200
The mounting position of this sprinkler head:
What is Upright?
200
One type of release mechanism for automatic sprinkler heads that utilizes a metal alloy that melts at a specific temperature.
What is a fusible-link sprinkler head?
200
The water supply most sprinkler systems are connected to.
What is public water supply systems?
200
A typical rating for sprinkler heads in a light hazard occupancy, such as an office building, is ____ degrees Fahrenheit to _____ degrees Fahrenheit.
What is 135 to 175?
200
Sprinkler heads in the 1950's often sprayed water in this direction in addition to on top of the fire.
What is onto the ceiling?
300
Sprinkler heads with different mounting positions are not _________ because each type produces different forms of streams.
What is Interchangeable?
300
A _____ head is easily identifiable by the fact that it has no cap or release mechanism.
What is deluge?
300
The part that holds a cap in place over the orifice.
What is the release mechanism?
300
Usually spare heads are kept in a clearly marked box near the _______.
What is the main control valve?
300
The common construction material of sprinkler heads and pipes.
What is steel?
400
The mounting position of this sprinkler head:
What is Sidewall?
400
A chemical-pellet sprinkler uses a _______ and a small chemical pellet to hold the cap in place.
What is a plunger mechanism?
400
This is used to direct water spray in a specific pattern.
What is a deflector?
400
This is often kept in the box with spare heads, and is specific to the type of sprinkler heads.
What are Head Wrenches?
400
Due to different coverage patterns ______ should not be used to replace new-style heads.
What is Old-style heads.
500
Upright heads are usually marked SSU, which stands for ________?
What is Standard Spray Upright?
500
An ESFR, which stands for _____ are often used in _____.
What is early-suppression fast-response, Large warehouses.
500
The standard orifice size on standard sprinkler heads.
What is 1/2-in.?
500
The liquid color inside a 625 degree max. ceiling temperature bulb.
What is black?
500
In sprinkler systems, sprinklers open ________.
What is one at a time?