Recessed Type Fire Sprinkler K-ZSTDQ15-68℃ vk478 (UL Certified)

The Recessed Type Fire Sprinkler K-ZSTDQ15-68℃ vk478 is a UL-certified fire protection device, designed with a recessed structure for unobtrusive installation. It activates at 68℃, providing reliable fire suppression performance in various indoor environments.

•Product Name：Recessed Type Fire Sprinkler K-ZSTDQ15-68℃ vk478 (UL Certified)
•Material :Brass/ Stainless Steel
•Size :1/2"–1" BSPT (Suitable for matching with common pipeline specifications to meet different installation needs)
•Nominal Pressure :5–50 bar（72.5–725 psi）(Ensures stable operation under various pressure conditions in fire protection systems)
•Operating Temp:-20°C to +60°C (Withstands a wide range of ambient temperatures, adapting to different climatic environments)
•Response Temp :68℃ (Quickly responds to fire temperature changes to activate the sprinkler function in a timely manner)
•Certification :UL Certified (Meets strict safety and performance standards of the UL certification system, ensuring reliability in fire protection applications)
•OEM Service：Accepted (Provides customized production services according to customer specific requirements, such as logo printing, special specifications, etc.)
•Delivery Terms：FOB, CFR, CIF, EXW (Offers flexible delivery terms to meet different international trade needs of customers)
•Payment Mode：T/T, L/C, PayPal, Western Union (Supports multiple secure and convenient payment methods to facilitate transaction processes)

Product category:

UL/FM Fire Sprinkler

Enterprise Atlas:

Email:

linhaifeng117@gmail.com

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Product Details

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Product Formation

This product, designated as K-ZSTDQ15-68℃ vk478, falls under the category of recessed type fire sprinklers, a design that allows it to be installed flush with ceilings or walls, maintaining the aesthetic integrity of the space while ensuring fire safety. It holds UL certification, a globally recognized standard for safety, which verifies that the sprinkler meets rigorous performance and quality requirements for fire protection equipment.​

With a nominal size suitable for 1/2"–1" BSPT pipelines (consistent with common fire protection system specifications), it offers broad compatibility with existing pipeline setups. The sprinkler operates within a nominal pressure range of 5–50 bar (72.5–725 psi), enabling stable water discharge even under fluctuating pressure conditions. Its operating temperature range of -20℃ to +60℃ ensures it can function normally in diverse climatic environments, from cold winters to warm summers, while the response temperature is set at 68℃—a critical threshold that balances prompt activation in case of fire with avoiding false triggers due to minor temperature fluctuations.​

Constructed from high-quality brass or stainless steel, the sprinkler boasts excellent corrosion resistance and durability, prolonging its service life and ensuring reliable performance over time. Additionally, it supports OEM services, allowing for customization based on specific customer needs such as logo printing or modified specifications, and offers flexible delivery terms (FOB, CFR, CIF, EXW) and payment modes (T/T, L/C, PayPal, Western Union) to accommodate international trade requirements.

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Product Features

1.UL Certification: Guarantees compliance with strict safety and performance standards, ensuring the sprinkler’s reliability in critical fire protection scenarios.​

2. Recessed Design: Enables flush installation with ceilings/walls, preserving the aesthetic appearance of spaces while maintaining full fire safety functionality.​

3. Precise 68℃ Response Temperature: Triggers quickly when fire-related temperature rises, ensuring timely water discharge to suppress flames, and avoids false activations.​

4. Durable Material (Brass/Stainless Steel): Offers strong corrosion resistance and long-term durability, suitable for use in various indoor environments with different humidity levels.​

5. Broad Compatibility: Fits 1/2"–1" BSPT pipelines and operates within 5–50 bar pressure, making it compatible with most standard fire protection systems.​

6. Wide Operating Temp Range (-20℃ to +60℃): Adapts to diverse climatic conditions, ensuring stable performance in both cold and warm regions.​

7. OEM Support: Accepts customized requirements, providing flexibility for customers with specific branding or functional needs.
 

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Product Parameter

Model	K-ZSTDQ15-68℃ VK478
Product Type	Recessed Sprinkler Head (Quick-Response, Concealed Type)
Temperature Rating	68℃ (154.4℉), Glass Bulb Heat-Sensitive Element
K-Factor	K80 (Nominal K-Factor: 80 US gpm/(psi)¹/²)
Inlet Size	DN15 (1/2 inch)
Connection Type	NPT Female Thread (Standard) / BSP Optional
Response Time Index (RTI)	≤50 (Quick-Response Performance)
Operating Pressure Range	0.1MPa - 1.2MPa (14.5psi - 174psi)
Flow Rate	~24.4 GPM at 30psi; ~34.5 GPM at 60psi (Based on K80 Factor)
Spray Pattern	Full Cone Coverage (360°), Uniform Water Distribution
Installation Type	Recessed (Concealed), Flush with Ceiling Surface After Installation
Material	Brass Body (Lead-Free, CW617N) + Borosilicate Glass Bulb + Stainless Steel Components
Operating Temperature	-10℃ to 70℃ (14℉ to 158℉)
Application	Commercial Buildings, Hotels, Office Complexes, Residential Areas, Shopping Malls
Certification	UL Listed, FM Approved, ISO9001, 3C (Optional)
Product Dimensions	89mm × 65mm × 52mm (L × W × H); Recessed Depth: 32mm
Net Weight	180g

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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！

Recessed Type Fire Sprinkler K-ZSTDQ15-68℃ vk478 (UL Certified)​

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Product Formation

Product Features

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Recessed Type Fire Sprinkler K-ZSTDQ15-68℃ vk478 (UL Certified)