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About usAn industrial and trade fire company integrating the development, production, sales, and service of fire accessories.
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2025
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K60/150° DN15 nozzle: 68℃ protection with greater precision
The DN15-68°C Closed Medium-Velocity Water Mist Nozzle (K60/150°) serves as the "precision protection unit" in fire suppression sprinkler systems. Its closed structure eliminates false discharge risks, while the standard 68°C thermal element ensures rapid fire response. The medium-velocity mist (50-200μm droplet size) combines cooling efficiency with low-impact characteristics. With a K60 flow coefficient for system compatibility and 150° wide-angle coverage for enhanced effectiveness, it's specifically designed for commercial spaces, office buildings, and light industrial facilities. This solution avoids equipment damage from high-velocity mist while overcoming the high-pressure costs of fine mist systems, striking the perfect balance between firefighting performance and secondary protection. Featuring standardized design, reliable materials, and relevant certifications, it delivers "stable, accurate, and economical" fire protection that aligns with practical safety requirements.
DN15-68℃ Closed Medium-Speed Water Mist Nozzle K60/150° In-Depth Analysis
As a crucial component in the "invisible defense line" of fire prevention,
the DN15-68℃ closed medium-speed water mist nozzle K60/150° stands out with its precise performance. It not only swiftly suppresses early-stage fires but also adapts to diverse protection scenarios. Today, let’s uncover the core strengths of this fire sprinkler head.
Each number conceals a protective logic.
• DN15: Represents the nominal diameter of the sprinkler as 15mm (commonly known as 4-part), compatible with national standard pipe threads. It is the most commonly used specification in industrial and civil buildings,
offering easy installation and strong versatility.
• 68°C: The nominal operating temperature of a closed sprinkler. When the ambient temperature reaches this value, the 5mm glass tube inside the sprinkler automatically breaks to activate, ensuring precise fire response without false triggers.
• K60: The flow coefficient is 60, meaning it provides a stable water output under standard water pressure, balancing firefighting efficiency with water conservation.
• 150°: The spray diffusion angle, with a maximum coverage of up to 7.5 meters, quickly forms a uniform water mist curtain to reduce the risk of fire spread.
High-Efficiency Firefighting Mist Created by "Collision"
Unlike the internal centrifugal atomization of high-speed water mist nozzles, this medium-speed water mist nozzle adopts "external impact atomization" technology. After the water flow is ejected from the nozzle, it impacts the petal-shaped diversion structure, instantly dispersing into uniform small droplets with a Dv0.9~900μm size, forming a wide coverage of water mist. On one hand, the water mist can rapidly absorb heat to cool down and suppress the combustion reaction; on the other hand, it can isolate oxygen and block the spread of flames. If a foam agent is added when extinguishing liquid fuel fires, the fire suppression effect can be further enhanced. Its recommended working water pressure ranges between 0.35-2.5MPa, and it can operate stably even under low-pressure conditions, reducing energy consumption.
Guard wherever needed
As the core component of an automatic water spray fire extinguishing system, its protection scenarios are highly versatile:
• Industrial sector: High-risk areas such as flammable liquid storage tanks, chemical workshops, and electrical equipment rooms.
• Civil buildings: Spaces with high occupancy or fire risks, such as underground parking garages, shopping mall atriums, and public entertainment venues.
• Special locations: Areas with high demands for fire suppression efficiency and cooling effects, such as electric bicycle parking and charging zones, and equipment rooms.
Its material options, including brass and stainless steel, also cater to corrosion resistance requirements in various environments.
More than firefighting, it's safety assurance.
- Efficient Fire Control: Uniform water mist coverage quickly suppresses initial fires, reducing explosion risks.
- Cost-Effective: Uses water as the extinguishing agent, offering low costs and adjustable water flow for water conservation and environmental protection.
- Stable & Reliable: Features a mature structural design with precise activation temperature, requiring minimal maintenance post-installation for long-term safety.
This seemingly compact sprinkler head is actually the "invisible guardian" of building fire safety. Choosing the right firefighting equipment buys precious time for life safety when danger strikes.
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Lidong Industrial Zone, Meilin Street, Nan'an, Quanzhou City.
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sales@sfxf-china.com
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we mainly have: water system accessories, stainless steel fire boxes and foam fire hydrant box accessories, valve accessories, intelligent above-ground hydrants and intelligent end-of-line test devices and automatic fire cannons, as well as accessories and fire equipment and valve product OEM processing.