Quick-Response Down Sprinkler (141°C, K80) with White Polyester Coating(K-ZSTX15-141℃)

Quick-Response Down Sprinkler (141°C, K80) with White Polyester Coating(K-ZSTX15-141℃) is a core terminal component in wet automatic sprinkler systems, specifically designed for areas below ceilings. It achieves ultra-early activation with a response time index (RTI) of ≤50(m·s)^0.5, making it ideal for medium- to low-risk venues with high occupancy and rapid fire spread—such as shopping malls, hotels, and hospitals.
Meanwhile, its white polyester coating surface treatment balances industrial-grade corrosion resistance/durability with the aesthetic demands of commercial spaces, serving as a critical node in modern indoor fire sprinkler systems that blends functionality with visual appeal.

● Body Material：Copper alloy (CuZn39Pb3) / 304 stainless steel
● Product Type：Downward sprinkler for wet automatic sprinkler system
● Temperature Rating：141℃
● Flow Coefficient (K - value)：K80
● Temperature - Sensitive Element Type：Thermosensitive glass bulb
● Operating Temperature Tolerance：±3℃
● Applicable Ambient Temperature：-20℃~+80℃
● 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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Email:

linhaifeng117@gmail.com

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Product Details

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Product Formation

Quick-Response Down Sprinkler (141°C, K80) with White Polyester Coating(K-ZSTX15-141℃) is a core terminal component in wet automatic sprinkler systems, specifically designed for areas below ceilings. It achieves rapid fire control and precise coverage in the initial fire stage through a combination of a "quick-response temperature-sensing element" and a "downward sprinkler structure." Meanwhile, its white polyester coating balances corrosion resistance, durability, and aesthetic appeal, acting as the "frontline sentinel" of indoor fire sprinkler systems.

By shortening fire suppression time via quick response, optimizing coverage efficiency with its downward design, and enhancing environmental adaptability with the polyester coating, it not only ensures fire safety but also complements spatial aesthetics. This makes it a key piece of equipment in modern building fire protection engineering—one that blends functionality with visual appeal.

KEY WORDS： Quick-Response Down Sprinkler，Quick-Response Downward Sprinkler，Downward Discharge Quick-Response Sprinkler，141°C Quick-Response Down Sprinkler，141°C K80 Quick-Response Down Sprinkler，White Polyester Coated Quick-Response Down Sprinkler，White Polyester Coated Down Sprinkler，141°C K80 White Polyester Coated Down 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

Faster response than traditional sprinklers—activates during the smoke phase of a fire (before visible flames) via instant triggering by a 141°C thermosensitive glass bulb (tolerance ±3°C). This significantly shortens fire suppression time and minimizes heat radiation damage to people and property.
Dedicated 141°C temperature rating—prevents false activation in low-temperature environments and avoids delayed response in high-heat settings. It guarantees the sprinkler activates only when neededand remains dormant otherwise.
Vertical downward sprinkler design—suited for indoor spaces with 2.5–4m ceiling heights, it effectively covers critical areas like shelf bottoms and occupied zones, eliminating the "coverage blind spots" common with traditional sprinklers.
Matte white coating—matches ceiling tones to address the visual obtrusiveness of exposed traditional sprinklers. It meets decorative requirements for commercial spaces (e.g., hotels, exhibition halls), balancing fire safety functionality with spatial aesthetics.
No complex mechanical moving parts—reduces frequent replacement needs and lowers long-term maintenance costs.

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Product Parameter

Parameter Item	Value/Standard	Description
Body Material	Copper alloy (CuZn39Pb3) / 304 stainless steel	Resistant to high pressure (working pressure ≤1.2MPa), corrosion - resistant, service life ≥15 years.
Splash Pan Material	Laser - punched copper alloy	Smooth surface, low water resistance, ensure uniform water spray diffusion.
Dimensions	Body diameter ≈25mm, splash pan diameter ≈80mm, total length ≈85mm	Compact design, suitable for concealed installation inside the ceiling.
Coating Process	Electrostatic powder coating	Strong coating adhesion (cross - cut test ≥grade 0), uniform thickness without sagging.
Dry Film Thickness	30 - 50μm	Balance corrosion resistance and appearance texture, avoid excessive thickness affecting heat conduction.
Product Type	Downward sprinkler for wet automatic sprinkler system	Specially designed for areas below the ceiling, pendant installation, static seal, automatically open to spray water during a fire.
Temperature Rating	141℃	Operating temperature of thermosensitive glass bulb, tolerance ±3℃ (in line with GB 5135.1 temperature rating classification).
Flow Coefficient (K - value)	K80	Rated flow coefficient, Q=K×P(Q: flow rate, L/s; P: working pressure, MPa).
Temperature - Sensitive Element Type	Thermosensitive glass bulb	Industry standard triggering element, ruptures at 141℃ to release the locking mechanism and activate the sprinkler.
Operating Temperature Tolerance	±3℃	Ensure accuracy of temperature triggering, avoid false operation or delayed response.
Glass Bulb Material	High borosilicate glass	High - temperature resistant (short - term temperature resistance ≥200℃), mechanical impact resistant (no rupture after 5m drop).
Working Pressure Range	0.14MPa ~ 1.2MPa (design pressure 1.0MPa, fluctuation ≤±0.05MPa)	Stable working pressure range, avoid false operation due to overpressure or reduced water spray effect due to underpressure.
Applicable Ambient Temperature	-20℃~+80℃	Wide temperature range of polyester paint, suitable for scenarios with large indoor - outdoor temperature differences (such as northern winters or southern summers).
Water Quality Requirement	Impurity particle size ≤0.2mm, pH value 6.5 - 8.5	Prevent impurities from blocking the sprinkler strainer or temperature - sensitive element gap, use with Y - type filter.
Installation Spacing	Standard spacing ≤3.6m (horizontal × vertical), distance from wall ≤1.8m	Comply with design specifications, ensure uniform coverage.
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！