What are the components of a fire sprinkler system?
Fire Sprinkler System Components
- Backflow Prevention Device. A backflow prevention device must be installed between the water source and the fire sprinkler system.
- Control Valve.
- Main Drain.
- Auxiliary Drain.
- Fire Department Connection.
- Waterflow Alarm.
- System Air Vent.
What are the four types of sprinkler systems?
Wet pipe, dry pipe, pre-action, and deluge are four types of fire sprinkler systems. Each of these systems helps prevent flames from spreading and reduces fire damage.
How do commercial sprinkler systems work?
Fire sprinklers work because high heat triggers the sprinkler system. When a blaze ignites, the air directly above it heats rapidly. When the air is hot enough and reaches a sprinkler head, it triggers a chain reaction. Most sprinkler heads feature a glass bulb filled with a glycerin-based liquid.
What are the different types of fire sprinkler heads?
All fire sprinklers are one of four types: pendent, upright, sidewall, or concealed.
Which valve is used in sprinkler system?
The main drain, or test valve, on an automatic sprinkler system primarily drains water from the system for maintenance. The main drain also tests the operation of the water supply for the sprinkler system.
What is a riser in fire sprinkler system?
The riser room is the room or designated space where the control room of the fire sprinkler system is kept. These system risers contain the pressure gauges, control valves, water flow alarms, and main drains for the sprinkler system.
What are the most common sprinkler designs typically found in commercial buildings?
Wet pipe fire sprinklers constantly have water in them. This allows for a quick reaction to a fire and is the most common type of sprinkler installed in buildings. A type of building that uses the wet pipe system is a high-rise or office building with a few floors.
How do I know if my OS&Y valve is open?
An OS&Y valve is open when the threaded stem extends from the valve. The valve is closed when the stem is not visible above the control wheel.
How are fire sprinklers tested?
The inspector’s test is typically located at the farthest point of the sprinkler system. The inspector will then open the inspector’s test, the inspector’s test simulates a sprinkler activating and shall send a signal to the fire alarm panel within 90 seconds.
What is the standard pressure for fire sprinkler?
7 pounds-per-square-inch
➢ Fire sprinklers typically require only 7 pounds-per-square-inch (psi) to operate, which is less than the minimum required pressure for residential plumbing fixtures.
What does K factor mean in sprinklers?
discharge coefficient
The k-factor for a fire sprinkler is the discharge coefficient, or in normal human terms just relates to the amount of water that is permitted through the sprinkler. The k-factor is dependent upon the orifice diameter of the sprinkler – a low k-factor (such as K2. 0) permit much more water to flow through.
