How fire sprinkler systems work?
The basic principle of a sprinkler system: Piping networks fitted with closed nozzles. The nozzles open separately when heated by fire or hot flue gases. Extinguishing water is sprayed selectively on the source of the fire. Water is also sprayed on the surrounding area and therefore prevents the fire from spreading.
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.
How many types of fire sprinkler systems?
four types
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. The main difference between these types of fire sprinkler systems is their applications and how they activate.
What is deluge valve?
A deluge valve is a type of system actuation valve that is opened by a detection system that is installed in the same areas as the spray nozzles or by remote manual operation supplying water to all spray nozzles.
What is the minimum pressure for a fire sprinkler system?
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 is ABC in fire extinguisher?
An “ABC” extinguisher will have a label like this, indicating that it may be used on class A, B and C fires. Dry chemical extinguishers put out fire by coating the fuel with a thin layer of dust, separating the fuel from the oxygen in the air.
What is carbon dioxide extinguisher?
A carbon dioxide (CO2) fire extinguisher is a portable, active fire protection device that works by expelling carbon dioxide onto a fire. It works by displacing the oxygen the fire relies upon to continue burning, and it is primarily used to extinguish fires in which the source of the fuel is a flammable liquid or gas.
What is sprinkler K factor?
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. 8 sprinkler, for example, is 50% discharge of a K5.
What is the 3 types of conventional sprinkler system?
What Are the Main Types of Sprinkler Systems?
- Wet Pipe System. Wet pipe sprinkler systems—or traditional fire sprinklers—are the most common across residential and commercial buildings.
- Dry Pipe System.
- Pre-Action System.
- Deluge System.
- Installing a Sprinkler System.
What is alarm valve?
HD Alarm Valve acts as a check valve by trapping pressurized water above the clapper and preventing reverse flow from sprinkler piping. It is used to actuate a fire alarm during flow of water from the sprinkler system. Alarm Valve is UL Listed and FM Approved.
What is hydrant valve?
Hydrant valves (also called Landing valves) provide the means to draw water for fire fighting from the Fire water piping network.
What are the steps in a fire sprinkler inspection?
Inspection of the water flow alarm and supervisory alarm devices for physical damage
What is a commercial fire sprinkler system?
A fire sprinkler system is an active fire protection method, consisting of a water supply system, providing adequate pressure and flowrate to a water distribution piping system, onto which fire sprinklers are connected.
What is a residential sprinkler system?
Sprinkler System. Definition. A residential-type fire sprinkler system consisting of piping and sprinkler heads that discharge water upon activation by heat. These are typically located in the ceiling or upper portion of the interior walls.
What are the components of a sprinkler head?
A typical sprinkler head consists of a plug, a glass ampule or other trigger mechanism, a deflector, cap, and a frame. When a fire is detected by the trigger mechanism, the glycerin-based liquid inside expands breaking the tube.