What are the main types of sprinklers?

systems for control, i.e water sprinklers for irrigation, fire pull downetc

1- sidewall

2-upright

3-pendant

Sprinklers can be classified according to3 main groups according to: the operation type (fusible link vs.
bulb), the distribution type (pendant, upright, sidewall), and response temperatures.
Operation Type: All wet-pipe sprinklers are held closed by either a fusible link or a glass bulb that contains a heat-sensitive liquid.
A fusible link sprinkler head has a two-part metal element that is fused by a heat-sensitive alloy.
The link holds the pip cap, or plug, in place.
Once the ambient temperature around the sprinkler head reaches a specified temperature, the alloy releases and the metal elements separate, which causes the pip cap to fall away.
Water is then released.
Note that water is only released by sprinkler heads where the ambient temperature reaches a specified level - therefore, water is only released in the area of a fire, which helps limit water damage.
Glass bulb sprinkler heads have a small glass reservoir that holds a heat-sensitive liquid.
This glass bulb holds the pip cap in place.
When the ambient temperature of the liquid reaches a certain level, the liquid expands causing the glass bulb to break, which allows the pip cap to fall away releasing water.
As with the fusible link heads, water is only released where the ambient temperature reaches a certain level, which helps limit water damage.
Distribution: Pendant sprinkler heads hang down from the ceiling and spray water in a circle pattern.
Upright sprinkler heads project up into a space.
They are generally used in mechanical rooms or other inaccessible areas to provide better coverage between obstructions.
They also provide a circle spray pattern Side wall sprinkler heads stand out from a wall.
They provide a half-circle spray pattern.
A second deflector also sprays water back toward the wall so that the wall is protected.
These are used when sprinklers cannot be located in the ceiling.
Response Temperatures: Since ambient air temperatures can vary widely depending on the use of a space or surrounding environment, sprinklers come rated for different activation temperatures.
Check NFPA13 table3-2.5.1