Production introduction
The foinbo® DN15 fire sprinkler is a critical component of modern automatic fire suppression systems, designed to deliver precise water distribution in response to elevated temperatures during a fire incident. As a standardized pipe size (15mm nominal diameter), it balances compactness with sufficient flow capacity, making it widely applicable in residential, commercial, and industrial settings. This article provides a detailed technical introduction to its design, operation, and applications.
Body Material: Primarily constructed from brass or zinc alloy, ensuring corrosion resistance and structural integrity under high-pressure conditions. Some models feature stainless steel components for enhanced durability in harsh environments.
Thread Connection: Equipped with 1/2" NPT (National Pipe Thread) or BSP (British Standard Pipe) threads, enabling compatibility with standard piping systems. The DN15 designation aligns with ISO 6708 and EN 806 standards for pipe sizing.
Glass Bulb Actuator: Contains a temperature-sensitive liquid enclosed in a 5mm-diameter glass bulb. When ambient temperatures reach the rated threshold (e.g., 68°C, 93°C), the liquid expands, shattering the bulb and releasing a plug to initiate water flow.
Product specification
|
Model |
T-ZSTX80-68℃ Q5 |
|
Type |
Pendent |
|
Connection |
DN15 |
|
K Factor |
80±4 |
|
Temperature |
68℃ |
|
Glass Bulb |
5mm, Red |
|
Response |
Standard |
FAQ
Q: What is the nominal diameter of a DN15 fire sprinkler?
A: DN15 corresponds to a 15mm nominal diameter, equivalent to 1/2-inch NPT/BSP threads for pipe connections.
Q: What materials are commonly used in DN15 sprinklers?
A: Brass (corrosion-resistant, durable) and zinc alloy (cost-effective) are standard. Some models use stainless steel for harsh environments.
Q: What is the K-factor of a DN15 sprinkler?
A: Most DN15 sprinklers have a K-factor of 5.6, discharging 80 L/min at 1 bar pressure. Higher K-factors (e.g., K8.0) are available for increased flow.
Q: What temperature ratings are available for DN15 sprinklers?
A: Common ratings: 57°C (orange), 68°C (red), 79°C (yellow), 93°C (green), 141°C (blue).
Q: How does a glass bulb actuator work in DN15 sprinklers?
A: A temperature-sensitive liquid inside the 5mm glass bulb expands when heated, shattering the bulb at the rated temperature to release water.