Diaphragm Type Deluge Valve (FSX-A Type DN100 Deluge Alarm Valve, FM/UL Certified)

The Diaphragm Type Deluge Valve (FSX-A Type DN100) is a FM/UL certified fire protection core device, integrating deluge control and alarm functions. It enables rapid water release to suppress large-scale fires, widely applicable in high-risk fire scenarios like industrial warehouses and factories.

•Product Name：Diaphragm Type Deluge Valve (FSX-A Type DN100 Deluge Alarm Valve, FM/UL Certified)
•Material :Body: Ductile iron / Carbon steel;
•Diaphragm: Nitrile rubber / EPDM;
•Internal components: Stainless steel (304/316)
•Size :DN100 (4" BSPT/NPT, compatible with standard pipe connections)
•Nominal Pressure :1.6–10 bar（23.2–145 psi）
•Operating Temp:-10°C to +70°C (suitable for most indoor and outdoor fire protection scenarios)
•Certifications :FM Approved, UL Listed (compliant with global fire safety standards) Service：Accepted (customization of valve body logo, connection type, or accessory configuration available) Terms：FOB, CFR, CIF, EXW, DAP, DDP
•Payment Mode：T/T (30% advance, 70% before shipment), L/C at sight, PayPal

Product category:

Fire alarm valve

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Product Details

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Product Formation

This deluge valve, designated as FSX-A with a nominal diameter of DN100 (4 inches), holds dual certifications from FM Global and UL, two authoritative organizations in global fire safety. These certifications validate its compliance with strict quality, performance, and safety standards, ensuring reliable operation in critical fire protection systems.​

Structurally, it adopts a diaphragm-driven design—this design allows the valve to open quickly (typically within 3 seconds) when triggered by fire detection systems (such as smoke detectors, heat detectors, or manual activation devices), instantly releasing a large volume of water to cover the protected area. The integrated alarm function synchronously sends fire alerts to the control center while the valve is opening, facilitating timely emergency response.​

In terms of performance, it operates stably under a nominal pressure range (commonly 1.6–10 bar / 23.2–145 psi) and adapts to a wide operating temperature range (usually -10°C to +70°C), making it suitable for both indoor and outdoor fire protection systems, including automatic sprinkler systems, water spray systems, and foam-water spray systems. The valve body is typically made of ductile iron or carbon steel for high strength and corrosion resistance, while internal components like the diaphragm (nitrile rubber or EPDM) and fasteners (stainless steel 304/316) ensure long-term durability and zero leakage under normal working conditions. Additionally, it supports OEM services, allowing customization of logos, connection types (BSPT/NPT), or accessory configurations to meet specific customer requirements. For delivery, it offers flexible terms (FOB, CFR, CIF, EXW, etc.) and payment modes (T/T, L/C, PayPal), with a delivery time of 20–50 days and a minimum order quantity (MOQ) of 100 pieces, catering to both small-batch and large-scale procurement needs.

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Product Features

1.Dual FM/UL Certification: Complies with rigorous global fire safety standards, ensuring high reliability and wide recognition in international markets, suitable for projects with strict certification requirements.​

2. Rapid Response Diaphragm Design: Driven by a high-performance diaphragm, the valve opens in ≤3 seconds when triggered, enabling quick water release to suppress fires in the early stage and minimize fire spread.​

3. Integrated Alarm Function: Synchronously activates an alarm while opening, promptly transmitting fire signals to the control center, helping to speed up emergency rescue and evacuation.​

4. Durable & Leak-Proof Construction: Valve body made of ductile iron/carbon steel, internal components of stainless steel and high-quality rubber, ensuring corrosion resistance, high strength, and zero leakage under nominal pressure, extending service life.​

5. Wide Application Adaptability: With DN100 size and compatibility with multiple fire protection systems (sprinkler, water spray, foam-water spray), it is suitable for industrial warehouses, factories, power plants, and other high-risk fire areas.​

6. Flexible Customization & Supply Terms: Accepts OEM services for personalized needs; offers diverse delivery terms (FOB, CFR, etc.) and payment modes (T/T, L/C, etc.), adapting to different customer procurement scenarios.
 

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Product Parameter

Model	FSX-A DN100
Product Type	Diaphragm Type Deluge Valve (With Alarm Function)
Certification	FM Approved, UL Listed, ISO9001, 3C (China Compulsory Certification)
Nominal Diameter (DN)	DN100 (4 inches)
Connection Type	Flanged Connection (ANSI B16.5 Class 150 / PN16, Compatible with Standard Pipes)
Nominal Pressure (PN)	PN16 (1.6MPa / 232 psi)
Test Pressure	2.4MPa (348 psi, Hydrostatic Test)
Operating Pressure Range	0.15MPa - 1.2MPa (21.8psi - 174psi)
Response Time	≤30 seconds (Full Opening Response Under Rated Pressure)
Valve Body Material	Ductile Iron (QT450-10) with Epoxy Coating (Internal & External Anti-Corrosion)
Diaphragm Material	EPDM Rubber (High Temperature & Chemical Resistance)
Sealing Material	Nitrile Rubber (NBR), Oil & Wear Resistant
Alarm Function	Mechanical Alarm (Pressure Switch Triggered) + Water Flow Indicator
Installation Orientation	Horizontal Installation (Inlet on Left, Outlet on Right)
Operating Temperature	0℃ - 70℃ (32℉ - 158℉), Suitable for Normal Temperature Environments
Flow Coefficient (Kv)	≥300 m³/h (Under Rated Pressure)
Application Scenarios	Fire Protection Systems (Warehouses, Chemical Plants, Power Stations, Shopping Malls), Industrial Sprinkler Networks
Compliance Standards	NFPA 13, FM 1111, UL 262, GB 5135.8
Product Dimensions	680mm × 320mm × 450mm (L × W × H, Including Bracket)
Net Weight	48 kg

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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！