Dry Sprinkler Head For Commercial Buildings
The Dry Sprinkler Head is specifically designed for the fire protection needs of commercial buildings and is a key component of the dry-pipe sprinkler system. Unlike wet-pipe systems, dry-pipe systems are filled with compressed air or nitrogen instead of water. When a fire occurs, the heat-activated sprinkler head releases the compressed air in the pipes, causing the valve to open and allowing water to flow into the pipes and out of the sprinkler head to effectively extinguish the flames. This design is particularly suitable for areas within commercial buildings that may be exposed to low-temperature environments, such as unheated warehouses, parking lots, or cold storage areas.
Description
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Product Content Introduction
Working Principle: The dry sprinkler head contains a heat-sensitive element, usually a glass bulb filled with a special liquid. When the surrounding temperature rises to a certain threshold (typically 154.4°F or 68°C, though this can vary depending on the setting), the liquid expands, causing the glass bulb to shatter and open the sprinkler nozzle, allowing water to flow towards the fire source.
Application Scenarios: The dry sprinkler head is highly suitable for areas within commercial buildings where temperatures may drop below freezing. For example, roof spaces, unheated basements, or loading areas in commercial buildings located in cold regions. Additionally, for areas sensitive to water damage, such as data centers or museums, the dry sprinkler head can provide extra protection. Since the pipes are not filled with water when the system is inactive, the risk of water damage due to pipe rupture or leakage is significantly reduced.
Advantages:
Freeze Protection: In cold environments, the dry sprinkler head effectively prevents the water in the pipes from freezing, ensuring that the system remains operational even in sub-zero temperatures.
Reduced Corrosion: As the pipes are typically free of water, dry systems are less prone to rust and corrosion compared to wet systems, thereby reducing maintenance costs.
Quick Response: Although there is a slight delay when the dry system is activated due to the need to release air from the pipes, this delay generally does not significantly impact the fire-extinguishing effectiveness. Moreover, once the sprinkler head is activated, the system can quickly release water to fight the fire.
Installation and Maintenance: The installation of dry sprinkler heads should be carried out by professional technicians to ensure the system functions properly. During installation, precise sealing and pressure testing of the pipes are essential to prevent air leaks. For maintenance, it is necessary to regularly check the pressure within the pipes to ensure it remains within the normal range and to clean and inspect the sprinkler heads to prevent blockages from dust or debris.
| Flow Coefficient | Operating Temperature | Maximum Ambient Temperature | Bulb Color | Connection Thread | Sensor Element | Response Index | Installation Method |
|---|---|---|---|---|---|---|---|
| K=80 K=115 K=161 K=202 K=202 |
57°C | 27°C | Orange | R.1 (K=80)/K=115 R.1/4 (K161)/K202 |
Glass Bulb (5mm/3mm) Fusible Alloy (K≈202) |
5mm Glass Bulb 50-80(m·s)½ 3mm Glass Bulb & Fusible Alloy ≤50(m·s)½ |
Downward |
| 68°C | 38°C | Red | |||||
| 79°C | 49°C | Yellow | |||||
| 93°C | 63°C | Green | |||||
| 141°C | 111°C | Blue |
In summary, the Dry Sprinkler Head is an essential part of the fire protection system in commercial buildings, providing reliable fire protection for commercial buildings, especially in areas at risk of low temperatures or sensitive to water damage.
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