Inlet Thread: M30x1.5
Outlet Thread: G1/4x19
Gauge Connection Thread: NPT1/8x27
Dip Tube Thread: M16x1.5
Pressure Mpa: 2.3-2.8
Side wall sprinkler heads are an automatic water spraying device specially designed to be installed on or near the exterior walls of buildings. They are mainly used to spray fine water mist or specific fire extinguishing agents to control and extinguish fire sources. Compared with traditional ceiling-mounted sprinklers, side wall sprinkler heads can cover areas that are difficult to protect with traditional sprinklers due to their special installation position and spraying method. They are particularly suitable for special places such as building exterior walls, corridors, and narrow spaces.
This type of sprinkler usually consists of core components such as nozzles, pipe networks, control devices, and trigger mechanisms. The system design takes into account the special requirements of the outdoor environment and has windproof, dustproof, and weather-resistant properties. When the ambient temperature reaches the preset value or a fire signal is detected, the sprinkler head will automatically start and spray water or fire extinguishing agents at a specific angle and range to form a "water curtain" or "fire extinguishing agent barrier" to effectively prevent the spread of fire.
The working principle of sidewall sprinkler is based on temperature sensing or electronic signal triggering mechanism, and its working process can be divided into three stages: standby, triggering and spraying.
In the standby state, the sprinkler is in a normally closed state and the internal pressure is balanced. Temperature-sensing sprinklers rely on thermistors (usually glass balls or fusible metals) to sense changes in ambient temperature; while electronically controlled sprinklers are activated by electrical signals sent by the fire alarm system. When a fire occurs in the protected area and the ambient temperature rises to the set threshold, the thermistor will break or deform, releasing the internal sealing mechanism. For the electronically controlled type, the solenoid valve opens after receiving the command signal from the control center.
After the sealing mechanism is released, the pressurized water or fire extinguishing agent in the pipeline is quickly sprayed out through the nozzle. The special design of the sidewall sprinkler makes it spray in a fan-shaped or wide-angle cone, rather than the circular distribution of traditional sprinklers. This spraying pattern can form a continuous water curtain with a large coverage area and uniform distribution, which is particularly suitable for protecting vertical surfaces and areas within a certain distance.
The spraying angle of the nozzle is usually between 90°-120°, and the specific design is determined according to the installation height and protection range. The working pressure is generally 0.1-0.5MPa, and the flow coefficient is in the range of 80-115L/min/bar¹/². These parameters jointly determine the effective protection radius and fire extinguishing efficiency of the nozzle.
Sidewall sprinklers have many unique product features, which make them occupy an important position in the field of building fire protection:
Large coverage capability: Through the optimized nozzle design, a single sprinkler can protect a wide area, and the installation spacing is significantly larger than that of traditional sprinklers, reducing the total number of sprinklers used in the system.
Directional spraying design: The unique fan-shaped spraying mode can accurately control the spraying direction, avoid wasting water resources in non-protected areas, and reduce the impact of factors such as wind on the spraying effect.
Rapid response mechanism: The use of highly sensitive thermal sensors or electronic sensors has a short response time, which can intervene in time at the early stage of the fire and significantly improve the success rate of fire extinguishing.
Easy maintenance: The modular design allows the main components to be replaced separately, and most models are equipped with test interfaces for regular inspection and maintenance.
The unique performance of the sidewall sprinkler makes it irreplaceable in many occasions——
Exterior wall protection of high-rise buildings: prevent external fires from spreading upward through windows or exterior wall materials, forming a vertical fire barrier.
Historical building protection: Provide fire protection without destroying the original building structure and aesthetics, especially suitable for cultural relics buildings where traditional sprinkler systems cannot be installed.
Parking lots and garages: Protect vehicles and building structures, and wide-angle spraying effectively covers multiple parking spaces.
Industrial facilities: Used to protect equipment exterior walls, tank areas, conveyor belts and other areas that are difficult to fully cover with traditional sprinklers.
Special hazardous areas: such as transformer stations, chemical equipment surroundings, etc., can be filled with fire extinguishing agents to provide professional protection.
Selection of installation location:
Avoid vents, smoke exhaust equipment and other locations that may affect the spraying effect
The installation height needs to be accurately calculated based on the spraying angle and protection range, usually 0.3-1.2 meters from the protection surface
The spacing between adjacent nozzles should ensure that the spraying range has appropriate overlap (about 10-15%)
System design considerations:
Hydraulic calculations must take into account the impact of pipeline length and elevation changes on working pressure
Antifreeze measures such as dry systems or adding antifreeze should be considered in cold areas
Filters should be equipped in areas with hard water to prevent nozzle clogging
Daily maintenance requirements:
Check whether the nozzle is clogged, corroded or mechanically damaged every quarter
Perform a comprehensive test at least once a year, including flow and spray pattern verification
Regularly check the functional status of control valves and alarm devices
Use restrictions:
Not suitable for protecting ceiling areas (need to be used with ceiling nozzles)
Strong wind environments may affect the spraying effect, and windshield measures or adjustment of installation parameters need to be considered
Special models are required for extreme temperature environments (below -20°C or above 80°C)