Aluminum Fire Water Flow Switch – Threaded Connection For Reliable Fire Alarm Systems
The Aluminum Threaded Water Flow Switch (DN25) reliably monitors water flow in fire sprinkler systems, triggering alarms in real time. Its durable aluminum housing ensures corrosion resistance and long-lasting performance. With a threaded connection for easy installation, this switch is ideal for commercial, industrial, and residential fire protection systems, providing fast detection and enhanced safety.
Description
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Products Description

Water Flow Switch – Threaded Connection
The Aluminum Fire Alarm Water Flow Switch with Threaded Connection is a high-performance device designed for modern fire protection systems. Crafted from durable aluminum, the housing ensures long-term resistance to corrosion and mechanical damage, making it suitable for both commercial and industrial environments.
Equipped with a precise sensing mechanism, this water flow switch detects changes in water movement within the sprinkler or piping system and immediately triggers an alarm, providing early warning in case of fire. The threaded connection allows for quick and secure installation, compatible with standard piping sizes.
Ideal for factories, warehouses, office buildings, and other facilities requiring reliable fire detection, this switch enhances overall safety by ensuring timely notification of system activation. Its robust construction, high sensitivity, and maintenance-friendly design make it a dependable choice for engineers and facility managers seeking efficient, long-lasting fire protection solutions.
Product Details
| Attribute | Specification |
|---|---|
| Brand Name | CA-FIRE |
| Model | ZSJZ-25-1.6 |
| Material | Aluminum |
| Type | Water Flow Switch / Indicator |
| Connection Type | Threaded (DN25) |
| Nominal Diameter (DN) | 25 mm |
| Working Pressure | 1.6 MPa |
| Color | Silver/Red |
| Installation | Horizontal / Vertical |
| Warranty | 12 months |
| Application | Fire sprinkler & piping system |
| Package | Carton / Wooden box |
| Place of Origin | Quanzhou, China |
The Aluminum Threaded Water Flow Switch is designed to provide reliable and efficient fire protection for commercial, industrial, and residential systems. Constructed with a durable aluminum housing, it offers excellent corrosion resistance and mechanical strength, ensuring long-lasting performance even in harsh environments.
Equipped with a sensitive detection mechanism, the switch accurately senses changes in water flow within sprinkler or piping systems, triggering alarms immediately to provide early warning of potential fire incidents. Its threaded DN25 connection enables quick and secure installation, compatible with standard piping, minimizing labor and installation time.
This water flow switch is low-maintenance yet highly dependable, offering consistent operation over years of use. By providing precise monitoring and rapid alerting, it enhances overall fire safety, reduces response times, and protects both property and personnel. Ideal for facility managers and engineers seeking robust, high-performance fire alarm solutions, this switch combines durability, accuracy, and ease of installation in one compact device.
Applications & Working Principle
Applications
Used in fire sprinkler systems for commercial, industrial, and residential buildings.
Suitable for warehouses, factories, offices, and high-rise buildings requiring reliable fire detection.
Can be integrated into fire alarm control panels for real-time monitoring and automated response.
Ideal for retrofit projects or new installations due to its threaded DN25 connection for easy setup.
Working Principle
The water flow switch operates by detecting changes in the flow of water within the sprinkler piping system. When a sprinkler head opens due to fire, the sudden water movement activates the internal sensing mechanism inside the switch. This triggers an electrical signal sent to the fire alarm control panel, initiating alarms and alerting personnel immediately. Its highly sensitive design ensures fast response, while the aluminum housing provides durability and protection against corrosion and mechanical damage. The threaded connection allows secure installation and reliable operation in various piping configurations.


How to Choosea Water Flow Switch
Choosing the right water flow switch is crucial to ensure reliable fire protection and system efficiency. Here are key factors to consider:
Material & Durability:
Aluminum switches offer excellent corrosion resistance and mechanical strength, ideal for long-term use in industrial and commercial environments.
Connection Type & Size:
Ensure the switch matches your piping system. For standard installations, a threaded DN25 connection provides easy and secure mounting.
Sensitivity & Accuracy:
High-quality switches detect even small changes in water flow to trigger alarms promptly, minimizing fire damage.
Compatibility:
Check that the switch can integrate with your fire alarm control panel and other system components.
Maintenance & Reliability:
Choose switches that are low-maintenance but offer consistent performance over years of operation.
By considering these factors, you can select a water flow switch that enhances safety, ensures timely alerts, and provides long-lasting performance for your fire protection system.

FAQ
Q1: What is a water flow switch used for?
A: It detects changes in water flow within a fire sprinkler system and sends a signal to the fire alarm control panel, providing early warning of fire incidents.
Q2: What materials are used in this switch?
A: The housing is made of durable aluminum, offering corrosion resistance and long-lasting mechanical strength.
Q3: What connection type does it have?
A: It features a threaded DN25 connection, suitable for standard piping systems and easy installation.
Q4: Can it be used in industrial and commercial buildings?
A: Yes, it is ideal for factories, warehouses, offices, high-rise buildings, and other facilities requiring reliable fire detection.
Q5: How does it work?
A: When water flows due to a sprinkler activation, the internal sensing mechanism triggers an electrical signal to the fire alarm panel, ensuring immediate alert.
Q6: Is it maintenance-heavy?
A: No, its robust design ensures low maintenance while maintaining consistent performance over time.
Q7: Is it compatible with fire alarm panels?
A: Yes, it can be integrated with standard fire alarm control panels for real-time monitoring and system automation.
Our address
NO.8, YUANFENG ROAD, MEIYUAN VILLAGE, KANGMEI TOWN, NANAN CITY, QUANZHOU CITY, FUJIAN CHINA
+86 18160950625
miki@ca-fire.com

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