UL FM Fire Water Flow Detector

The UL FM Fire Water Flow Detector is a critical fire safety device designed to monitor and alert against water flow changes in fire protection systems, ensuring timely response to potential fire incidents. It is certified by UL (Underwriters Laboratories) and FM Global, meeting strict industry safety and performance standards for reliable operation.

•Product Name：UL FM Fire Water Flow Detector
•Material :Aluminum alloy housing, stainless steel
•Nominal Pressure :10–100 bar（145–1450 psi）
•Operating Temp:-40°C to +80°C
•Certifications :UL Listed (UL 268), FM Approved (FM 1120/1130)
•Sensing Type :Paddle-type / Pressure differential-type / Ultrasonic-type (optional)Output Signal :Dry contact (SPDT), 4–20 mA analog signal, RS485 communication (optional)
•OEM Service：Accepted (custom logo, color, and partial function adjustment available)
•Delivery Terms：FOB, CFR, CIF, EXW, DAP Mode：T/T (30% advance, 70% before shipment), L/C at sight, PayPal, Western Union

Product category:

UL/FM Water Flow Detector

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linhaifeng117@gmail.com

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Product Details

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Product Formation

The UL FM Fire Water Flow Detector is engineered to integrate seamlessly with various fire protection systems, such as sprinkler systems, standpipe systems, and fire hydrant networks. Its primary function is to detect the initiation of water flow—triggered when a sprinkler head activates due to heat or when a fire hose is connected to a standpipe— and transmit a signal to a fire alarm control panel (FACP) or building management system. This signal prompts immediate alerts, allowing building occupants to evacuate and emergency responders to mobilize quickly.​

Constructed with durable materials (e.g., corrosion-resistant metals, high-grade plastics) to withstand harsh environments (including high humidity, temperature fluctuations, and chemical exposure), the detector is suitable for use in commercial buildings, industrial facilities, warehouses, and residential complexes. It operates on different sensing mechanisms, such as paddle-style, pressure-based, or ultrasonic technology, depending on the specific system requirements. The UL and FM certifications guarantee that the device has undergone rigorous testing for functionality, durability, and compatibility, ensuring it performs as intended under real-world fire conditions. Additionally, it often includes features for easy installation, maintenance, and calibration, minimizing downtime and ensuring long-term reliability.

KEY WORDS： UL FM certified fire water flow detector，Fire protection system flow sensor，Sprinkler system water flow detector，Standpipe flow monitoring device，UL 268 fire flow detector，FM Approved water flow alarm，Fire alarm control panel (FACP) compatible detector, China, manufacturers, suppliers, wholesale, factory

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Product Features

1.Dual UL & FM Certification: Meets the strict safety and performance standards set by Underwriters Laboratories (UL) and FM Global, ensuring compliance with global fire safety regulations and reducing liability risks for building owners.​

2. Rapid Flow Detection: Utilizes advanced sensing technology (e.g., paddle sensors, pressure transducers) to detect water flow within seconds, enabling fast emergency response.​

3. Wide Compatibility: Designed to work with various fire protection system types (sprinkler, standpipe, hydrant) and pipe sizes (typically 2 inches and above), making it versatile for different building setups.​

4. Durable Construction: Built with corrosion-resistant materials and sealed components to resist moisture, dust, and chemical damage, ensuring reliable operation in harsh indoor and outdoor environments.​

5. Easy Installation & Maintenance: Features a compact design, simple mounting options, and accessible calibration points, reducing installation time and simplifying routine maintenance checks.​

6. Fault Monitoring: Includes built-in diagnostic capabilities to detect issues such as low power, sensor malfunctions, or blockages, providing early warnings to prevent system failures.

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Product Parameter

Model	Customizable (e.g., FWD-ULFM-01)
Product Type	UL & FM Certified Fire Water Flow Detector
Detection Principle	Paddle-Type / Vane-Type (Mechanical Sensing with Electrical Feedback)
Applicable Pipe Diameter	DN50 - DN300 (2 inch - 12 inch)
Minimum Detectable Flow	15 LPM (4 GPM) - 30 LPM (8 GPM) (Adjustable)
Working Pressure Range	PN10 - PN25 (1.0MPa - 2.5MPa / 145 psi - 363 psi)
Operating Temperature	-20℃ to 80℃ (-4℉ to 176℉)
Material	Cast Iron/Brass Body; 304 Stainless Steel Paddle; NBR Seal
Connection Type	Flanged (ANSI B16.5 Class 150) / Threaded (BSP/NPT) (Optional)
Output Signal	SPDT Relay (NO/NC Contacts); 4-20mA Analog Signal (Optional)
Power Supply	DC 24V / AC 110V-240V (Universal Voltage)
Response Time	≤1.5 Seconds (from flow activation to signal output)
Protection Level	IP67 (Waterproof, Dustproof)
Compatibility	Works with fire alarm control panels (FACP) of major brands
Application Scenarios	Fire Sprinkler Systems, Fire Hydrant Networks, Deluge Systems, Industrial Fire Protection Pipelines
Certification	UL Listed, FM Approved, ISO9001, CE, RoHS
Product Dimensions	180mm × 150mm × 120mm (L × W × H) (Flanged DN100 Model)
Net Weight	3.8 kg (Flanged DN100 Model)

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FAQ

Q: Can you accept sample order?

A: Yes, we accept samples with little and reasonable charge.But need customer pay sample fees and transport fees first.

Q: What is your payment terms?
A: Payment supports T/T, L/C, etc.

Q: How can l get my order?
A: We will send you the goods by UPS,DHL,FedEx,Oversea Shipment or other forwarder, all with tracking number.

Q: Why choose us?
A： With over 15 years of experience in the fire protection industry, our company has professional technical personnel and many well-known partners in the domestic market. We offer favorable prices and guarantee quality, having passed multiple certifications!

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With more than 15 years of experience serving clients, we have developed extensive expertise and in-depth industry knowledge, enabling us to deliver reliable and effective solutions tailored to your requirements.
We provide professional technical support and customized service offerings. Our committed technical team is available to assist you with product consultation, installation guidance, and comprehensive after-sales support whenever necessary.
At Sheng Feng Fire, our professionals are dedicated to helping you select the most suitable products based on your specific needs.
Please do not hesitate to contact us for further information！