Fire Rain Alarm Valve (FSX-A-DN150, FM/UL Certified)

The Fire Rain Alarm Valve (FSX-A-DN150, FM/UL Certified) is a high-reliability fire protection control device designed for large-space and special hazard fire suppression systems. With dual FM and UL certifications, it ensures rapid valve activation and real-time alarm feedback, effectively preventing fire spread.

•Product Name：Fire Rain Alarm Valve (FSX-A-DN150, FM/UL Certified)
•Material :Ductile iron (body), stainless steel (internal components), EPDM (sealing parts)
•Size :DN150 (6") flange connection (conforming to ANSI B16.5 or DIN standards)
•Nominal Pressure :1.6–2.5 MPa（232–362.6 psi）
•Operating Temp :-10°C to +80°C
•Certifications :FM Certification, UL Certification
•Alarm Function :Mechanical alarm (with pressure switch for electrical signal output, supporting remote monitoring)
•Control Mode :Pneumatic control, hydraulic control, electric control (optional)
•OEM Service：Accepted
•Delivery Terms：FOB, CFR, CIF, EXW, DAP
•Payment Mode：T/T (30% advance, 70% before shipment), L/C at sight, Western Union

Product category:

UL/FM Alarm Check Valve

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Email:

linhaifeng117@gmail.com

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Product Details

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Product Formation

This fire rain alarm valve features a model designation of FSX-A-DN150, where "DN150" indicates a nominal diameter of 150mm, making it suitable for medium to large-scale fire protection pipelines that require high water flow. It has obtained both FM and UL certifications—two of the most authoritative global fire safety certifications—verifying its compliance with strict standards for performance, durability, and safety in fire emergencies.​

In terms of operational performance, the valve supports a nominal pressure range that adapts to different pipeline pressure requirements (typically compatible with common fire protection system pressures), ensuring stable water flow control when activated. Its body is usually made of high-strength ductile iron or carbon steel, with internal sealing components made of wear-resistant and high-temperature-resistant materials (such as EPDM), enabling it to operate normally in an ambient temperature range of approximately -10°C to +80°C and maintain long-term leak-proof performance.​

Functionally, the valve integrates two core capabilities: fire suppression control and alarm transmission. When a fire is detected by the fire detection system, it can be quickly activated through pneumatic, hydraulic, or electric control modes (optional based on user needs), releasing water to form a "rain-like" spray for large-area fire suppression. At the same time, its built-in mechanical alarm device and pressure switch send electrical signals to the fire control room in real time, enabling operators to promptly grasp the fire location and system operating status.​

It is widely used in high-risk scenarios such as warehouses, chemical factories, oil depots, large shopping malls, and industrial workshops—areas where rapid and large-scale fire suppression is critical. Additionally, the product supports OEM services, allowing customization according to specific project requirements, and offers flexible delivery terms and payment methods to meet the needs of global customers.

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Product Features

1.Dual FM/UL Certifications: Meets international top fire safety standards, ensuring the valve’s performance, safety, and reliability are recognized globally, suitable for projects with strict certification requirements.​

2. Large Nominal Diameter (DN150): Provides a large water flow channel, matching medium to large-scale fire protection pipelines, and can quickly deliver sufficient water volume for large-area fire suppression.​

3. Dual Function of Suppression and Alarm: While controlling water release for fire suppression, it synchronously triggers mechanical alarms and transmits electrical signals, facilitating real-time monitoring and emergency response.​

4. Multi-Control Modes: Supports pneumatic, hydraulic, and electric control options, allowing flexible selection based on the fire detection system type and on-site installation conditions.​

5. High Durability: Adopts high-strength materials (ductile iron/carbon steel body, EPDM seals) and a robust structural design, withstanding harsh environmental conditions and ensuring long-term stable operation.​

6. Wide Applicability: Suitable for various high-risk scenarios such as industrial workshops, chemical depots, and large commercial spaces, adapting to different fire hazard levels.
 

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Product Parameter

Model	FSX-A-DN150
Product Type	FM/UL Certified Fire Rain Alarm Valve (Wet Pipe Type)
Nominal Diameter (DN)	150mm (6 inch)
Inlet/Outlet Connection	Flanged (ANSI B16.5 Class 150), Compatible with Standard Pipe Systems
Operating Pressure Range	0.15MPa - 1.2MPa (21.8psi - 174psi)
Test Pressure	1.8MPa (261psi) (Hydrostatic Test, 5 Minutes Duration)
Alarm Trigger Pressure	≥0.03MPa (4.35psi)
Closing Pressure	≤0.7MPa (101.5psi)
Response Time	≤30 Seconds (From Water Flow to Alarm Signal Output)
Material	Ductile Iron Body (GGG50); Stainless Steel Internal Components; Nitrile Rubber Seals
Working Medium	Clean Water (pH 6.5 - 8.5, No Impurities)
Operating Temperature	4℃ - 70℃ (39.2℉ - 158℉)
Alarm Output	Mechanical Alarm (Audible) + Electrical Signal (SPDT Switch, 24V DC)
Application	Commercial Buildings, Industrial Warehouses, Shopping Malls, Data Centers, High-Rise Buildings
Certification	FM Approved, UL Listed, ISO9001, CE
Compliance Standards	NFPA 13, FM 1120, UL 341, GB 5135.2
Product Dimensions	480mm × 320mm × 280mm (L × W × H)
Net Weight	42 kg
Special Features	Dual-certified for global markets; Anti-corrosion ductile iron construction; Reliable dual-alarm system; Low-pressure start protection; Easy maintenance design

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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！