Fire Sprinkler System Service Professionals in Orange County CA
Our mission is to protect lives and property from fire. Your fire sprinkler system is your first and sometimes only line of defense in the event of fire danger. Legion Fire Protection brings decades of experience and thousands of job sites visited. We have seen and done it all. We bring a team of experienced fire protection technicians who are able to service any type of fire protection system you may have installed or supply you with a fresh installation that will meet your building’s fire protection needs.
Legion Fire Protection has the ability to develop, layout, and install fire sprinkler system solutions- on time and on budget in Orange County and it's surrounding areas. Our managers and technicians bring the technical expertise needed to provide you with the best solution. From retrofitting existing systems to building systems from the ground up - we have you covered.

Residential Fire Sprinkler Systems Orange County
Residential fire sprinkler systems are a great layer of defense when it comes to maintaining the safety of homes. We take your investment in fire safety seriously and cut no corners and do everything in adherence to NFPA 13R.
What is a NFPA 13R?

Fire Sprinkler Systems Save Lives and Property
Automatic fire sprinklers have been in use around the USA since the 19th century. These systems have been active components of domestic, commercial, & industrial buildings’ fire protection systems.
Fire sprinkler systems are a part of the active fire protection category. They immediately activate and respond to fires in their early stages. Contact Legion Fire Protection today for a quote or to learn more about the right solutions for your property type. We design, install, inspect, & repair all types of fire sprinkler systems!

See what our customers have to say
The Legion Fire Protection Difference

What are the different types of fire sprinkler systems?
Deluge, Pre-Action, Wet Pipe, & Dry Pipe are the four types of fire sprinkler systems. What differentiates these systems is the way they activate and the application of the system. These systems are generally comprised of a water supply, piping system, & fire sprinkler heads. The sprinkler heads will discharge water automatically once a fire is detected.
Wet-Pipe
The wet pipe fire sprinkler system is the most common system. Water is kept and held under pressure in the pipe system. The process of activation on these systems is quite simple - when a fire sprinkler element’s heat threshold is passed, it breaks and releases water. An important thing to note on these systems is that water is flowing through the pipes constantly, so temperatures in your facility should be above 40F at all times to prevent freezing. These systems are generally found in schools, high-rise buildings, offices, & residential buildings that aren’t super hazardous.
Dry Pipe
The dry pipe system is filled with nitrogen or pressurized air. There is no active water flowing in the system until a fire is detected. These systems take slightly longer to activate and are generally found in low-temperature areas where pipes may freeze or burst. Air pressure in the system holds the dry pipe valve closed. The moment a fire sprinkler detects a temperature increase, it will activate which causes the air pressure in the system to drop. This forces the valve to open and allows water to flow through the system. These systems are ideal in unheated/unoccupied buildings or warehouses, parking garages, & areas with freezing temperatures.

Wet-Pipe
The wet pipe fire sprinkler system is the most common system. Water is kept and held under pressure in the pipe system. The process of activation on these systems is quite simple - when a fire sprinkler element’s heat threshold is passed, it breaks and releases water. An important thing to note on these systems is that water is flowing through the pipes constantly, so temperatures in your facility should be above 40F at all times to prevent freezing. These systems are generally found in schools, high-rise buildings, offices, & residential buildings that aren’t super hazardous.
Dry Pipe
The dry pipe system is filled with nitrogen or pressurized air. There is no active water flowing in the system until a fire is detected. These systems take slightly longer to activate and are generally found in low-temperature areas where pipes may freeze or burst. Air pressure in the system holds the dry pipe valve closed. The moment a fire sprinkler detects a temperature increase, it will activate which causes the air pressure in the system to drop. This forces the valve to open and allows water to flow through the system. These systems are ideal in unheated/unoccupied buildings or warehouses, parking garages, & areas with freezing temperatures.

Wet-Pipe
The wet pipe fire sprinkler system is the most common system. Water is kept and held under pressure in the pipe system. The process of activation on these systems is quite simple - when a fire sprinkler element’s heat threshold is passed, it breaks and releases water. An important thing to note on these systems is that water is flowing through the pipes constantly, so temperatures in your facility should be above 40F at all times to prevent freezing. These systems are generally found in schools, high-rise buildings, offices, & residential buildings that aren’t super hazardous.
Dry Pipe
The dry pipe system is filled with nitrogen or pressurized air. There is no active water flowing in the system until a fire is detected. These systems take slightly longer to activate and are generally found in low-temperature areas where pipes may freeze or burst. Air pressure in the system holds the dry pipe valve closed. The moment a fire sprinkler detects a temperature increase, it will activate which causes the air pressure in the system to drop. This forces the valve to open and allows water to flow through the system. These systems are ideal in unheated/unoccupied buildings or warehouses, parking garages, & areas with freezing temperatures.


Deluge
Deluge systems are found in high hazard facilities such as aircraft hangars, industrial settings, and manufacturing warehouses - or any building that has a potential of fires spreading quickly. In the Deluge system, the sprinkler heads are always open so they are able to discharge water quickly. No water or pressurized air is used in these systems piping. Since the sprinkler heads are completely open on this system, an external heat or smoke sensor is required for the activation of the deluge valve which will send water through the piping causing water to discharge through each sprinkler head instantly.
Pre-Action
The pre-action fire sprinkler system is a combo of wet and dry pipe systems. Activating the sprinkler heads is a 2 step process in this system, which helps eliminate the chance of accidental discharge of water. Like dry pipe, pressurized air or nitrogen is contained in the piping until a heat or smoke detector goes off. This will activate the pre-action valve, allowing water to flow through the system. Next, the sprinkler heads themselves must detect a fire in order to discharge the water that is now flowing through the pipes. These systems will have similar response times to a standard wet pipe system. These systems are ideal for areas at high risk for water damage such as museums, laboratories or data centers.
These are the 4 main types of fire sprinkler systems. Location, facility type, & potential hazards will help determine which system will provide the best fire protection for you.
Deluge
Deluge systems are found in high hazard facilities such as aircraft hangars, industrial settings, and manufacturing warehouses - or any building that has a potential of fires spreading quickly. In the Deluge system, the sprinkler heads are always open so they are able to discharge water quickly. No water or pressurized air is used in these systems piping. Since the sprinkler heads are completely open on this system, an external heat or smoke sensor is required for the activation of the deluge valve which will send water through the piping causing water to discharge through each sprinkler head instantly.
Pre-Action
The pre-action fire sprinkler system is a combo of wet and dry pipe systems. Activating the sprinkler heads is a 2 step process in this system, which helps eliminate the chance of accidental discharge of water. Like dry pipe, pressurized air or nitrogen is contained in the piping until a heat or smoke detector goes off. This will activate the pre-action valve, allowing water to flow through the system. Next, the sprinkler heads themselves must detect a fire in order to discharge the water that is now flowing through the pipes. These systems will have similar response times to a standard wet pipe system. These systems are ideal for areas at high risk for water damage such as museums, laboratories or data centers.
These are the 4 main types of fire sprinkler systems. Location, facility type, & potential hazards will help determine which system will provide the best fire protection for you.

Deluge
Deluge systems are found in high hazard facilities such as aircraft hangars, industrial settings, and manufacturing warehouses - or any building that has a potential of fires spreading quickly. In the Deluge system, the sprinkler heads are always open so they are able to discharge water quickly. No water or pressurized air is used in these systems piping. Since the sprinkler heads are completely open on this system, an external heat or smoke sensor is required for the activation of the deluge valve which will send water through the piping causing water to discharge through each sprinkler head instantly.
Pre-Action
The pre-action fire sprinkler system is a combo of wet and dry pipe systems. Activating the sprinkler heads is a 2 step process in this system, which helps eliminate the chance of accidental discharge of water. Like dry pipe, pressurized air or nitrogen is contained in the piping until a heat or smoke detector goes off. This will activate the pre-action valve, allowing water to flow through the system. Next, the sprinkler heads themselves must detect a fire in order to discharge the water that is now flowing through the pipes. These systems will have similar response times to a standard wet pipe system. These systems are ideal for areas at high risk for water damage such as museums, laboratories or data centers.
These are the 4 main types of fire sprinkler systems. Location, facility type, & potential hazards will help determine which system will provide the best fire protection for you.