Quick-Response Upward-Downward Sprinklers 141℃ K161 V3404 / V3408

The Quick-Response Upright/Pendent Fire Sprinkler (141℃, K161) is a quick-response type fire sprinkler, featuring both upright and pendent installation configurations. It is mainly used for automatic fire suppression and protection in medium to high fire risk areas.

● Nozzle Body Material：59 Brass (H59, containing 59% copper + 41% zinc, high strength, good corrosion resistance)
● Nominal Operating Temperature：141∘C
● Action Temperature Color Code：Orange (corresponding to 141∘C, international standard temperature marking)
● Rated Working Pressure (P)：0.1MPa(design reference pressure)
● Interface Type and Size：Threaded connection: R3/8′′(British pipe thread) or 1/2′′BSPT (compatible with DN15/DN20 fire protection pipelines)
● OEM Service：Accepted
● Delivery Terms：FOB, CFR, CIF, EXW
● Payment Mode：T/T, L/C, PayPal, Western Union

Product category:

UL/FM Fire Sprinkler

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Product Details

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Product Formation

Quick-Response Upward and Downward Sprinklers (141℃, K161) are professional fire sprinkler components designed specifically for high-efficiency fire suppression and comprehensive protection. Integrating two core features—rapid response and bidirectional coverage—they are tailored for scenarios demanding robust early-stage fire containment and three-dimensional spatial safety.

By optimizing the sensitivity of their thermal actuation elements and the configuration of their spray orifices, these sprinklers deliver synchronized water discharge to both upper and lower zones while accelerating response time, significantly enhancing fire knockdown efficiency. They are the ideal choice for medium- to high-risk environments such as commercial complexes, industrial plants, and warehousing/logistics facilities.

With "rapid response + all-dimensional coverage" as their core strength, these sprinklers transcend the limitations of traditional sprinklers’ planar protection through technological innovation. They provide a more efficient, reliable three-dimensional fire protection solution for high-risk settings—embodying the "precise prevention and control" philosophy at the heart of modern fire protection systems.

KEY WORDS： Quick-Response Upward Sprinkler，Quick-Response Downward Sprinkler，141℃ Quick-Response Sprinkler，K161 Quick-Response Sprinkler，Upward-Downward Sprinkler ，China, manufacturers, suppliers, wholesale, factory.

Other Classifed Products：

Fire Hose Categories, Fire Sprinkler System, Fire Protection Valve , Fire Hose Reel&Cabinet , Fire Foam Equipment，Fire Nozzle and Fire Monitor , Fire Hydrant , UL/FM Fire Fighting Equipment , Brass Valve Categories , Fire Extinguisher Series .

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Product Features

Core Features of Quick-Response Upward/Downward Sprinklers (141℃, K161)

Ultra-Rapid Response to Seize Critical Fire-Suppression Time
These sprinklers achieve ultra-rapid activation by rupturing and initiating at the earliest stages of a fire—significantly faster than traditional sprinklers—greatly reducing fire control delay and critical intervention time.
Precise 141℃ Activation Temperature
With a calibrated activation temperature of 141℃, they prevent false triggers in low-temperature environments while ensuring timely response at the initial phase of fire development, balancing sensitivity and reliability.
Durable Brass Construction for Stable Operation
The main body is crafted from high-quality brass, enabling long-term stable performance in harsh environments—including humidity, dust, and elevated temperatures—thereby reducing maintenance frequency.
Fully Sealed Design for Intrusion Prevention
A hermetically sealed structure blocks dust and moisture from entering internal components, ensuring the thermal actuator and spray orifice continue to operate accurately even in industrial dust or outdoor rain exposure.
Flexible Installation with Compatibility
Supports two installation methods: recessed ceiling embedding or surface mounting. Compatible with mainstream fire protection piping systems, it offers flexible setup and hassle-free maintenance.

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Product Parameter

Item	Specification
Nozzle Body Material	59 Brass (H59, containing 59% copper + 41% zinc, high strength, good corrosion resistance)
Splash Pan Material	304 Stainless Steel (surface mirror polishing, Ra≤0.8μm, anti-dust and anti-clogging)
Thermal Sensitive Element Housing	Borosilicate Glass (withstand temperature ≥300∘C, thermal shock resistance ≥100cycles)
Sealing Material	EPDM (Ethylene Propylene Diene Monomer, aging resistance, temperature resistance −40∘C∼120∘C)
Nominal Operating Temperature	141∘C
Action Temperature Color Code	Orange (corresponding to 141∘C, international standard temperature marking)
Flow Coefficient (K-value)	K=161(total flow area of nozzle outlet ≈127mm2, including upward/downward nozzles)
Interface Type and Size	Threaded connection: R3/8′′(British pipe thread) or 1/2′′BSPT (compatible with DN15/DN20 fire protection pipelines)
Rated Working Pressure (P)	0.1MPa(design reference pressure)
Water Spray Volume at 0.1MPa	Total water spray volume ≈2.5L/s(downward nozzle ≈1.5L/s, upward nozzle ≈1.0L/s, proportionally distributed)
Minimum Working Pressure	0.05MPa(to ensure bidirectional water spray start and minimum spray intensity)
Operating Ambient Temperature	−10∘C∼+70∘C(for conventional places); optional high-temperature version (−10∘C∼+100∘C, for industrial high-temperature areas)
Humidity Resistance Range	Relative humidity ≤95%RH(no condensation)
Notes	Specific details need to be confirmed with the supplier.

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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！