black
135
bronze
165
white
212
blue
286
red
360
green
400
orange
500
release mechanisms
fusible link - two levers held in place by a metal link
glass bulb - bulb filled w/ liquid and air bubbles.
chemical pallet- pallet of solder under compression
components
deflector frame orifice cap threads
types
pendant - 1/2 orifice: 15 gpm
upright = “ “
sidewall- pipes run along wall
flush- recessed in ceiling 117 degree disc covers head then falls and exposed 165 degree sprinkler head
residential - fast response
jr. system heads - 1/4 - 3/8 inch orifice
operation
- Plug the sprinkler using Peterson Wedges and divert water using a 2 ½” hose
- Use a 12x ladder (rubber shoes)
- Locate the [Outside Stem & Yoke or Post Indicating Valve or Gate Valves] and shut them off
- Open up the Drainage system
- Sprinkler head must be replaced and valves must be re-opened; until then the building will be on “fire watch”
wet pipe
used where freezing does not occur
piping contains water under pressure at all times
individual sprinkler activated
most common in city
dry pipe
used where freezing occurs
piping contains air or nitrogen under pressure(15-50) psi
upon sprinkler activation what is released
pre action
used to prevent water damage
Activated by heat/smoke detector (heads have fusible links
individual sprinklers activated
deluge
- Used on ‘high-hazard occupancies’ie-aircraft hangers
- Activated by fire, heat, or manual device
- Water flows through ALL heads simultaneously
looped system
- Buildings 1983-1988
- Two points of connection to the sprinkler system so the water for a given sprinkler head is delivered from two or more risers
