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K-ZSTBS 115-68°C Q3J Quick Response Sprinkler Head – High-Performance Commercial Fire Sprinkler

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K-ZSTBS 115-68°C Q3J Quick Response Commercial Sprinkler Head for Fire Protection Systems

When it comes to reliable fire safety solutions for commercial buildings, a high-quality commercial fire sprinkler is non-negotiable, and the K-ZSTBS 115-68°C Q3J Quick Response Sprinkler Head from CA-Fire Protection stands out as a top-tier choice for industrial and commercial fire protection needs. This commercial sprinkler head is engineered to deliver rapid fire detection and suppression, making it an essential component in automatic sprinkler systems for a wide range of commercial, industrial, and public spaces. CA-Fire Protection, a leading manufacturer of fire protection equipment with over a decade of expertise, designs and produces the K-ZSTBS 115-68°C Q3J to meet the strictest international and national fire safety standards, ensuring optimal performance when fires break out. Whether installed in office buildings, shopping malls, warehouses, or hospitals, this quick response commercial sprinkler head provides the fast, effective fire suppression required to minimize property damage, protect human life, and comply with global fire safety regulations. In this comprehensive guide, we will explore the design, specifications, applications, benefits, and installation considerations of the K-ZSTBS 115-68°C Q3J Quick Response Sprinkler Head, highlighting why it is the preferred commercial fire sprinkler for fire protection professionals and building owners worldwide.

Why Choose CA-Fire’s K-ZSTBS 115-68°C Q3J Commercial Fire Sprinkler?

CA-Fire Protection has established itself as a benchmark brand in the fire protection industry since its founding in 2012, with a commitment to research and development, superior manufacturing, and customer-centric service. All our fire protection products, including the K-ZSTBS 115-68°C Q3J commercial sprinkler head, undergo rigorous quality control testing and are certified by national fire detection and suppression testing centers, with type approval and voluntary certification certificates from the Ministry of Public Security. What sets our commercial fire sprinkler range apart is our focus on technological innovation—we follow the latest advancements in precision manufacturing and testing technology, ensuring every sprinkler head meets and exceeds industry performance standards.

The K-ZSTBS 115-68°C Q3J Quick Response Sprinkler Head is a result of this dedication to excellence. As a quick response model, it features a highly sensitive heat-activated element that triggers faster than standard response sprinkler heads, a critical advantage in commercial spaces where fires can spread rapidly due to high occupancy, flammable materials, and large open areas. Unlike conventional sprinkler heads, this commercial sprinkler head is designed to activate at a lower temperature threshold and release water immediately, containing fires in their incipient stage before they escalate. Additionally, CA-Fire’s K-ZSTBS 115-68°C Q3J is built with durable, high-quality materials that resist corrosion, wear, and environmental damage, ensuring long-term reliability in even the harshest commercial environments. From high-humidity warehouses to temperature-fluctuating retail spaces, this commercial fire sprinkler maintains its performance and structural integrity, making it a cost-effective and low-maintenance fire safety solution.

Another key benefit of choosing CA-Fire’s K-ZSTBS 115-68°C Q3J is our comprehensive after-sales service and global supply chain. We provide technical support for installation, maintenance, and system design, and our products are covered by PICC liability insurance, giving our customers peace of mind. As a one-stop manufacturer of fire protection equipment, we offer a full range of complementary products to pair with the K-ZSTBS 115-68°C Q3J commercial sprinkler head, including wet alarm valves, dry alarm valves, water flow indicators, and fire hydrant systems, creating a fully integrated fire protection system for commercial buildings.

H3: Design and Working Principle of the K-ZSTBS 115-68°C Q3J Commercial Sprinkler Head

The K-ZSTBS 115-68°C Q3J Quick Response Sprinkler Head is a sidewall-type commercial fire sprinkler, engineered with a compact, space-saving design that is ideal for installation in areas with limited ceiling space, such as hallways, corridors, offices, and retail stores—common commercial environments where efficient fire suppression is essential. The sidewall mounting design of this commercial sprinkler head allows for easy installation on vertical walls or suspended ceilings, and its directional water discharge pattern ensures optimal coverage of the protected area, eliminating blind spots that can leave commercial spaces vulnerable to fire spread.

At the core of the K-ZSTBS 115-68°C Q3J commercial sprinkler head is its quick response heat-activated element, which uses a high-quality glass bulb imported from Germany’s Kubota—an industry-leading component known for its precision and reliability. The glass bulb is filled with a special liquid that expands rapidly when exposed to heat, and at the rated temperature of 68°C (154.4°F), the bulb shatters, releasing the sprinkler’s seal and allowing pressurized water to flow through the orifice and onto the fire. This quick response mechanism is what differentiates the K-ZSTBS 115-68°C Q3J from standard response sprinkler heads: it activates in as little as a few seconds when exposed to fire heat, compared to standard heads that may take minutes to trigger. This rapid activation is critical in commercial spaces, where even a small delay can lead to significant fire growth, property damage, and risk to human life.

The K-ZSTBS 115-68°C Q3J commercial fire sprinkler features a flow coefficient (K-factor) of 115, which determines the volume of water the sprinkler head can discharge at a given pressure. A K-factor of 115 means this commercial sprinkler head delivers a high water flow rate, making it suitable for protecting light and ordinary hazard commercial areas, as defined by fire safety codes and standards. The water discharge pattern of the K-ZSTBS 115-68°C Q3J is carefully engineered to create a uniform water spray that covers a designated area, with a spray radius optimized for commercial building layouts. The sprinkler head’s metal components are made from high-grade, corrosion-resistant alloy, ensuring resistance to rust, oxidation, and chemical damage—common issues in commercial environments with high humidity, air pollution, or exposure to cleaning chemicals. The finish of the K-ZSTBS 115-68°C Q3J is also designed to blend with commercial building interiors, with a sleek, unobtrusive appearance that does not compromise on aesthetic appeal while delivering maximum fire protection performance.

Full Specifications of the K-ZSTBS 115-68°C Q3J Commercial Fire Sprinkler

CA-Fire Protection’s K-ZSTBS 115-68°C Q3J Quick Response Sprinkler Head is manufactured to meet the strictest fire safety standards, including GB 5135.1-2019 (National Standard of the People’s Republic of China for Automatic Sprinkler Systems – Part 1: Sprinkler Heads) and international standards such as UL and FM. Every commercial sprinkler head is tested and calibrated in our state-of-the-art quality control laboratory to ensure accurate performance, reliable activation, and consistent water discharge. Below is the complete technical specification for the K-ZSTBS 115-68°C Q3J commercial fire sprinkler, including all key performance and design parameters as outlined in CA-Fire’s official product catalog:

Core Technical Specifications

Specification	K-ZSTBS 115-68°C Q3J Commercial Sprinkler Head
Model Number	K-ZSTBS 115-68°C Q3J
Type	Sidewall Quick Response Commercial Fire Sprinkler
Nominal Activation Temperature	68°C (154.4°F)
Response Index (RTI)	≤50 (m·s)¹ᐟ²
Flow Coefficient (K-factor)	115
Connection Thread	R3/4 (BSPT)
Maximum Working Pressure	1.6 MPa (232 PSI)
Test Pressure (Hydrostatic)	6.4 MPa (928 PSI)
Sealing Test Pressure	3.2 MPa (464 PSI)
Applicable Pressure Range	0.1 MPa – 1.6 MPa (14.5 – 232 PSI)
Protection Area	Optimized for light/ordinary hazard commercial areas (per fire code)
Mounting Type	Sidewall (vertical wall/suspended ceiling)
Activation Element	German Kubota imported glass bulb (red color – 68°C rating)
Minimum Ambient Temperature	4°C (39.2°F)
Maximum Ambient Temperature	50°C (122°F)
Material	Corrosion-resistant alloy (body); high-strength glass (bulb); silicone rubber (seal)
Finish	Epoxy powder coating (white/black/custom)
Certification	National Fire Product Type Approval; PICC Liability Insurance; ISO 9001 Quality Management System

Performance Specifications

Quick Response Activation: The RTI of ≤50 (m·s) ensures the sprinkler head activates rapidly when exposed to fire heat, meeting the quick response requirements for commercial fire protection systems.
Water Discharge Efficiency: A K-factor of 115 delivers a high water flow rate, ensuring sufficient water volume to suppress fires in light and ordinary hazard commercial spaces.
Pressure Resistance: The sprinkler head can withstand a maximum working pressure of 1.6 MPa, suitable for most commercial sprinkler system pressure settings, and passes a hydrostatic test of 6.4 MPa for structural integrity.
Corrosion Resistance: The alloy body and epoxy coating provide excellent resistance to corrosion, rust, and chemical damage, making it suitable for use in high-humidity and industrial commercial environments.
Seal Reliability: The high-quality silicone rubber seal ensures zero water leakage under normal operating conditions, a critical feature for commercial sprinkler systems to avoid water damage to property.

Installation Specifications

Mounting Height: Optimized for installation at 2.4m – 4.8m above the floor (per commercial fire safety code requirements)
Clearance: No obstructions within 300mm of the sprinkler head to ensure unobstructed water discharge
Orientation: Sidewall mounting, fixed direction (adjustable brackets available for custom angles)
Complementary Systems: Compatible with wet, dry, and pre-action automatic sprinkler systems for commercial buildings
Installation Tools: Standard plumbing tools (no special equipment required)

Key Benefits of the K-ZSTBS 115-68°C Q3J Commercial Sprinkler Head for Commercial Spaces

Investing in the right commercial fire sprinkler is one of the most important decisions for building owners, facility managers, and fire protection engineers—and the K-ZSTBS 115-68°C Q3J Quick Response Sprinkler Head offers a wide range of benefits that make it the ideal choice for commercial fire protection. Below are the most significant advantages of this commercial sprinkler head, tailored to the unique fire safety needs of commercial buildings:

Rapid Fire Suppression Minimizes Damage and Risk

The single most important benefit of the K-ZSTBS 115-68°C Q3J is its quick response activation. In commercial spaces—such as shopping malls, offices, restaurants, and warehouses—fires can spread at an alarming rate due to the presence of flammable materials (e.g., paper, plastic, textiles), high air flow, and large open areas. A standard response sprinkler head may take too long to activate, allowing a small fire to grow into a large, uncontrollable blaze. The K-ZSTBS 115-68°C Q3J commercial fire sprinkler activates in seconds, releasing water immediately to contain the fire at its source. This rapid suppression not only minimizes property damage and repair costs but also protects human life by reducing the spread of smoke and fire, giving occupants more time to evacuate safely. For commercial businesses, this means less downtime, lower insurance claims, and a faster return to normal operations after a fire incident.

Complies with Global Commercial Fire Safety Standards

Fire safety regulations for commercial buildings are strict and vary by region, but the K-ZSTBS 115-68°C Q3J commercial sprinkler head is designed to meet and exceed the most stringent national and international standards. In China, it complies with GB 5135.1-2019, the national standard for automatic sprinkler heads, and has obtained the Ministry of Public Security’s fire product type approval certificate. Internationally, it is designed to align with UL, FM, and EN standards, making it a suitable choice for commercial buildings in global markets. For building owners and facility managers, this compliance means peace of mind: installing the K-ZSTBS 115-68°C Q3J ensures that the commercial fire protection system meets local fire code requirements, avoiding fines, penalties, or building occupancy issues due to non-compliant fire safety equipment. CA-Fire Protection provides full certification documentation for every commercial sprinkler head, making it easy to verify compliance with fire safety authorities.

Durable and Low-Maintenance for Long-Term Commercial Use

Commercial buildings require fire protection equipment that can withstand constant use, environmental stress, and minimal maintenance—and the K-ZSTBS 115-68°C Q3J commercial sprinkler head delivers on both fronts. Its corrosion-resistant alloy body and epoxy powder coating protect against rust, oxidation, and chemical damage, even in commercial environments with high humidity (e.g., indoor swimming pools, food processing facilities), air pollution (e.g., urban office buildings), or exposure to cleaning chemicals (e.g., retail stores, hospitals). The German Kubota glass bulb is a high-precision component with a long service life, and the silicone rubber seal ensures zero water leakage under normal operating conditions, eliminating the risk of water damage to commercial property from faulty sprinkler heads. Unlike other fire protection equipment that requires frequent calibration or replacement, the K-ZSTBS 115-68°C Q3J is a set-it-and-forget-it commercial sprinkler head: it only requires annual visual inspection (per fire safety codes) to check for damage or obstruction, with no regular maintenance or part replacement needed. This low-maintenance design reduces operational costs for commercial building owners and facility managers, making it a cost-effective fire safety solution over the long term.

Versatile Installation for All Commercial Building Types

The K-ZSTBS 115-68°C Q3J commercial sprinkler head features a sidewall mounting design that is incredibly versatile, making it suitable for installation in almost all commercial building types and layouts. Sidewall sprinkler heads are ideal for areas with limited ceiling space, such as hallways, corridors, narrow offices, and retail store aisles—spaces where standard pendent or upright sprinkler heads are not practical to install. The compact design of the K-ZSTBS 115-68°C Q3J also makes it suitable for installation in commercial spaces with aesthetic requirements, such as luxury hotels, high-end retail stores, and corporate offices: its sleek, unobtrusive appearance blends with interior design, without compromising on fire protection performance. The sprinkler head is compatible with wet, dry, and pre-action automatic sprinkler systems, the three most common types of sprinkler systems used in commercial buildings, and can be installed on vertical walls or suspended ceilings with standard plumbing tools (no special equipment required). This versatility means the K-ZSTBS 115-68°C Q3J can be integrated into new commercial building fire protection systems or retrofitted into existing systems, making it a flexible choice for fire protection engineers and contractors.

High Water Flow Rate for Effective Fire Suppression

With a flow coefficient (K-factor) of 115, the K-ZSTBS 115-68°C Q3J commercial sprinkler head delivers a high water flow rate, ensuring sufficient water volume to suppress fires in light and ordinary hazard commercial areas. Light hazard areas include offices, schools, and libraries, where fire loads are low and fires spread slowly; ordinary hazard areas include retail stores, restaurants, and warehouses, where fire loads are higher and fires spread more rapidly. The K-factor of 115 is optimized for these areas, providing enough water to extinguish fires without excessive water discharge that could cause additional property damage. The water discharge pattern of the K-ZSTBS 115-68°C Q3J is also carefully engineered to create a uniform water spray that covers a designated area, eliminating blind spots and ensuring full fire suppression coverage. This high water flow rate and uniform spray pattern make the K-ZSTBS 115-68°C Q3J a highly effective commercial fire sprinkler for protecting commercial spaces of all sizes and fire hazard levels.

Ideal Applications for the K-ZSTBS 115-68°C Q3J Commercial Sprinkler Head

The K-ZSTBS 115-68°C Q3J Quick Response Sprinkler Head is a versatile commercial fire sprinkler designed for use in a wide range of commercial, industrial, and public spaces, all classified as light or ordinary hazard areas per fire safety codes and standards. Its sidewall mounting design, quick response activation, and high water flow rate make it suitable for installation in almost any commercial building where efficient fire suppression is essential. Below are the key application areas for the K-ZSTBS 115-68°C Q3J commercial sprinkler head, with specific examples of commercial spaces where it is the optimal fire protection choice:

Office Buildings and Corporate Spaces

Office buildings are one of the most common applications for the K-ZSTBS 115-68°C Q3J commercial sprinkler head. These spaces are classified as light hazard areas, with low fire loads (paper, computers, furniture) and large open areas with hallways and corridors—ideal for sidewall sprinkler head installation. The quick response activation of the K-ZSTBS 115-68°C Q3J is critical in office buildings, where fires often start from electrical equipment (e.g., computers, printers) or paper waste and can spread rapidly through cubicles and open office layouts. The compact, unobtrusive design of this commercial sprinkler head also blends with modern office interiors, making it a popular choice for corporate headquarters, co-working spaces, and high-rise office buildings.

Retail Spaces and Shopping Malls

Retail stores, shopping malls, and department stores are ordinary hazard commercial areas, with higher fire loads (clothing, plastic products, cardboard packaging) and high occupancy rates. The K-ZSTBS 115-68°C Q3J commercial fire sprinkler is an ideal choice for these spaces: its quick response activation contains fires before they spread to adjacent stores, and its high water flow rate (K=115) delivers sufficient water to extinguish fires involving flammable retail merchandise. The sidewall mounting design is perfect for retail store aisles, mall corridors, and fitting rooms—areas with limited ceiling space where standard pendent sprinkler heads are not practical. The sprinkler head’s corrosion-resistant finish also makes it suitable for retail spaces with high foot traffic and exposure to cleaning chemicals.

Healthcare Facilities and Hospitals

Hospitals, clinics, and medical offices are critical commercial spaces where fire safety is non-negotiable—occupants include patients with limited mobility, and medical equipment is often sensitive to fire and water damage. The K-ZSTBS 115-68°C Q3J commercial sprinkler head is an excellent choice for healthcare facilities: its quick response activation suppresses fires rapidly, minimizing damage to medical equipment and giving staff time to evacuate patients safely. The low-maintenance design of this commercial sprinkler head is also a benefit for healthcare facilities, where regular maintenance of fire protection equipment can be disruptive to patient care. The sidewall mounting design is suitable for hospital hallways, patient rooms, and medical offices, and the sprinkler head’s water discharge pattern is optimized to avoid excessive water damage to sensitive medical equipment.

Educational Institutions

Schools, colleges, and universities are light hazard commercial spaces with high occupancy rates and a mix of open areas (classrooms, auditoriums) and narrow corridors. The K-ZSTBS 115-68°C Q3J commercial fire sprinkler is ideal for these institutions: its quick response activation is critical for protecting students and staff, and its sidewall mounting design is perfect for school hallways and classroom corners—areas with limited ceiling space. The sprinkler head’s durable, corrosion-resistant design also withstands the high foot traffic and occasional vandalism common in educational institutions, ensuring long-term reliability.

Warehouses and Light Industrial Facilities

Light industrial warehouses and manufacturing facilities are ordinary hazard commercial areas, with fire loads including packaging materials, raw materials, and finished goods. The K-ZSTBS 115-68°C Q3J commercial sprinkler head is suitable for these spaces: its high water flow rate (K=115) delivers sufficient water to suppress fires involving flammable materials, and its quick response activation contains fires before they spread to large warehouse areas. The corrosion-resistant alloy body of this commercial sprinkler head also withstands the high humidity and dust common in warehouse environments, ensuring reliable performance over time. The sidewall mounting design is perfect for warehouse aisles and loading docks—areas with limited ceiling space and high traffic.

Hospitality Facilities (Hotels and Motels)

Hotels, motels, and resorts are a mix of light and ordinary hazard commercial spaces, with guest rooms, hallways, lobbies, and restaurants. The K-ZSTBS 115-68°C Q3J commercial sprinkler head is an ideal choice for hospitality facilities: its quick response activation is critical for protecting guests (many of whom are sleeping or unfamiliar with the building layout), and its sidewall mounting design is perfect for hotel hallways and guest room corners. The sprinkler head’s sleek, unobtrusive design also blends with hotel interiors, a key consideration for luxury hospitality brands. The corrosion-resistant finish is also suitable for hotel bathrooms and pool areas—high-humidity environments where standard sprinkler heads may corrode over time.

Public Spaces and Government Buildings

Libraries, museums, community centers, and government buildings are light hazard commercial spaces with unique fire safety needs—many house valuable artifacts, documents, or public records that require protection from both fire and water damage. The K-ZSTBS 115-68°C Q3J commercial fire sprinkler is a great choice for these spaces: its quick response activation suppresses fires rapidly, minimizing fire damage, and its optimized water flow rate avoids excessive water discharge that could damage valuable items. The sidewall mounting design is suitable for library aisles, museum exhibit areas, and government building hallways, and the sprinkler head’s low-maintenance design ensures minimal disruption to public access.

Installation and Maintenance Guidelines for the K-ZSTBS 115-68°C Q3J Commercial Sprinkler Head

Proper installation and maintenance are critical to ensuring the K-ZSTBS 115-68°C Q3J commercial sprinkler head performs optimally when a fire breaks out. As a precision-engineered fire protection component, this commercial sprinkler head must be installed by a qualified fire protection contractor in accordance with national and local fire safety codes, as well as CA-Fire Protection’s official installation guidelines. Below are the key installation and maintenance guidelines for the K-ZSTBS 115-68°C Q3J, designed to ensure reliable performance and compliance with fire safety regulations:

Professional Installation by Qualified Fire Protection Contractors

The K-ZSTBS 115-68°C Q3J commercial fire sprinkler must be installed by a licensed, qualified fire protection contractor with experience in commercial sprinkler system installation. This is a legal requirement in most regions, and unprofessional installation can lead to sprinkler head malfunctions, water leakage, or failure to activate during a fire. CA-Fire Protection provides a comprehensive installation manual for the K-ZSTBS 115-68°C Q3J, which includes detailed instructions on mounting, connection, and pressure testing. The contractor must follow these instructions, as well as local fire safety codes (e.g., NFPA 13 in the United States, GB 50084 in China) for sprinkler system design and installation. Key installation steps include:

Mounting: The sprinkler head is mounted on a vertical wall or suspended ceiling at a height of 2.4m – 4.8m above the floor, with no obstructions within 300mm of the head to ensure unobstructed water discharge.
Connection: The R3/4 thread is connected to the commercial sprinkler system’s water pipe using Teflon tape or a thread sealant to prevent water leakage.
Pressure Testing: After installation, the sprinkler system is pressure-tested to 1.6 MPa (the maximum working pressure of the sprinkler head) to check for leaks and structural integrity.
Inspection: A final visual inspection is performed to ensure the sprinkler head is correctly aligned, unobstructed, and free of damage.

Annual Visual Inspection (Per Fire Safety Codes)

The K-ZSTBS 115-68°C Q3J commercial sprinkler head requires only annual visual inspection, per global fire safety codes and standards. This inspection is a simple, non-invasive check performed by a qualified fire protection technician or facility manager, and no disassembly or part replacement is needed. The purpose of the annual inspection is to ensure the sprinkler head is in good condition, unobstructed, and ready to activate in the event of a fire. Key inspection steps include:

Check for Damage: Inspect the sprinkler head body, glass bulb, and seal for cracks, dents, or other damage—any damaged sprinkler head must be replaced immediately.
Check for Obstruction: Ensure there are no obstructions (e.g., dust, debris, furniture, decorations) within 300mm of the sprinkler head that could block water discharge.
Check for Corrosion: Inspect the sprinkler head body for signs of rust, oxidation, or corrosion—if corrosion is present, the sprinkler head must be replaced.
Check Alignment: Ensure the sprinkler head is correctly aligned and mounted securely—loose or misaligned sprinkler heads must be reattached or realigned.
Document Inspection: Record the inspection date, results, and any actions taken (e.g., replacement) in a fire protection system maintenance log, as required by fire safety authorities.

Replacement of Damaged or Activated Sprinkler Heads

If the K-ZSTBS 115-68°C Q3J commercial sprinkler head is damaged (e.g., cracked glass bulb, corroded body) or activated during a fire, it must be replaced immediately with a new, identical sprinkler head from CA-Fire Protection. Activated sprinkler heads cannot be reset or reused—they are single-use components designed to activate once and must be replaced to restore the commercial sprinkler system’s functionality. CA-Fire Protection offers fast global shipping of replacement sprinkler heads, ensuring minimal downtime for commercial building fire protection systems. When replacing a sprinkler head, it is important to use only genuine CA-Fire parts—counterfeit or non-genuine parts may not meet performance standards and can lead to system malfunctions.

Compatibility with Commercial Sprinkler System Maintenance

The K-ZSTBS 115-68°C Q3J commercial sprinkler head is designed to be compatible with regular commercial sprinkler system maintenance, such as pipe flushing, pressure testing, and valve inspection. These maintenance activities are performed by qualified fire protection contractors on a regular basis (per fire safety codes) and do not require any special handling of the sprinkler head—simply ensure the head is protected from damage during system maintenance (e.g., cover with a plastic bag during pipe flushing to prevent debris from entering the orifice).

CA-Fire Protection – Your Trusted Partner for Commercial Fire Sprinkler Solutions

CA-Fire Protection is a leading manufacturer of fire protection equipment, with over a decade of experience in designing, producing, and supplying high-quality commercial fire sprinkler heads and fire protection systems to customers worldwide. Founded in 2012 and based in Quanzhou, Fujian, China—a renowned overseas Chinese hometown and manufacturing hub—we are a one-stop provider of fire protection solutions, offering over 700 types of fire protection products, including foam fire extinguishing systems and of course, our full range of commercial sprinkler head models, including the K-ZSTBS 115-68°C Q3J Quick Response Sprinkler Head.

Our core values—integrity, dedication, pragmatism, responsibility, and efficiency—guide everything we do, and our mission is to create value for our customers through high-quality products and exceptional service. We follow the latest advancements in precision manufacturing and testing technology, with a state-of-the-art production facility and quality control laboratory that ensures every product meets the strictest international and national fire safety standards. All our products are certified by national fire detection and suppression testing centers, with type approval and voluntary certification certificates from the Ministry of Public Security, and are covered by PICC liability insurance—giving our customers peace of mind that their fire protection systems are reliable and protected.

We serve a global customer base, with our products installed in thousands of national key projects, large public spaces, and commercial facilities worldwide, including iconic projects such as Beijing Daxing International Airport, Chengdu Tianfu International Airport, the Palace Museum Renovation Project, and the China Mobile Harbin Data Center. Our team of experienced engineers and technical support staff provides comprehensive pre-sales and after-sales service, including system design, installation guidance, maintenance support, and replacement parts—ensuring our customers have the support they need to design and maintain effective fire protection systems for their commercial buildings.

As a customer-centric company, we offer custom manufacturing services for our commercial fire sprinkler heads and other fire protection products, allowing customers to tailor products to their specific commercial fire safety needs (e.g., custom finishes, mounting brackets, or activation temperatures). We also have a global supply chain and fast shipping capabilities, ensuring our products reach customers worldwide in a timely manner.

Contact CA-Fire Protection for Your K-ZSTBS 115-68°C Q3J Commercial Fire Sprinkler Needs

If you are looking for a high-quality, reliable commercial fire sprinkler for your commercial building fire protection system, the K-ZSTBS 115-68°C Q3J Quick Response Sprinkler Head from CA-Fire Protection is the perfect choice. Our team of fire protection experts is ready to answer your questions, provide technical specifications, and help you design the optimal fire protection system for your commercial space—whether you are building a new commercial facility or retrofitting an existing fire protection system.

Contact us today using the information below to learn more about the K-ZSTBS 115-68°C Q3J commercial sprinkler head and our full range of fire protection products and services. We look forward to partnering with you to create a safer future for your commercial building, employees, and customers.

Email: sales@ca-fire.com

Mobile: +86 13400715622

WhatsApp: +86 18150362095

WeChat: 404863577

Official Website: https://www.ca-fire.com

FAQs: About the K-ZSTBS 115-68°C Q3J Commercial Fire Sprinkler

What is the activation temperature of the K-ZSTBS 115-68°C Q3J commercial sprinkler head?

The K-ZSTBS 115-68°C Q3J commercial sprinkler head has a nominal activation temperature of 68°C (154.4°F), marked by a red glass bulb—this is the standard activation temperature for most commercial fire sprinkler heads, suitable for most indoor commercial environments.

What is the flow coefficient (K-factor) of the K-ZSTBS 115-68°C Q3J?

This commercial fire sprinkler has a flow coefficient (K-factor) of 115, which means it delivers a high water flow rate, making it suitable for protecting light and ordinary hazard commercial areas (per fire safety codes).

What type of mounting is the K-ZSTBS 115-68°C Q3J designed for?

The K-ZSTBS 115-68°C Q3J is a sidewall-type commercial sprinkler head, designed for mounting on vertical walls or suspended ceilings—ideal for commercial spaces with limited ceiling space, such as hallways, corridors, and retail store aisles.

Is the K-ZSTBS 115-68°C Q3J compatible with all commercial sprinkler systems?

This commercial fire sprinkler is compatible with the three most common types of commercial sprinkler systems: wet, dry, and pre-action automatic sprinkler systems, making it a versatile choice for all commercial building types.

What standards does the K-ZSTBS 115-68°C Q3J comply with?

The K-ZSTBS 115-68°C Q3J is manufactured to meet GB 5135.1-2019 (Chinese national standard for sprinkler heads) and aligns with international standards such as UL and FM. It has obtained national fire product type approval and is covered by PICC liability insurance.

How often does the K-ZSTBS 115-68°C Q3J require maintenance?

This commercial sprinkler head requires only an annual visual inspection (per global fire safety codes), with no regular maintenance or part replacement needed. Damaged or activated sprinkler heads must be replaced immediately.

Can the K-ZSTBS 115-68°C Q3J be customized for specific commercial needs?

Yes, CA-Fire Protection offers custom manufacturing services for the K-ZSTBS 115-68°C Q3J, including custom finishes (e.g., black, silver), mounting brackets, and connection threads—contact our sales team for more information on custom options.

Where can I buy the K-ZSTBS 115-68°C Q3J commercial sprinkler head?

The K-ZSTBS 115-68°C Q3J is available for purchase directly from CA-Fire Protection—contact our sales team via email, mobile, WhatsApp, or WeChat (details above) to request a quote or place an order. We offer global shipping to customers worldwide.

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External Link: NFPA 13 – Standard for the Installation of Sprinkler Systems, the global benchmark for commercial fire sprinkler system design and installation)

Parameter	Specification
Product Name	Quick Response Commercial Fire Sprinkler
Model Number	Customizable (Tailored for Commercial Use, Compatible with Global Standards)
Product Type	Commercial Fire Sprinkler, Commercial Sprinkler Head, Quick-Response Sprinkler
Nominal K-Factor	115 (8.0 gpm/psi¹ᐟ²)
Activation Temperature	68°C (154°F), Orange Glass Bulb (5mm Diameter)
Response Type	Q3 Quick-Response, High-Sensitivity Thermal Activation
Connection Size	DN25 / 1″ NPT, Standard Threaded Connection (Male Thread)
Working Pressure Range	0.1-1.2 MPa (14.5-174 psi)
Coverage Radius	4.5-6.0 Meters (14.8-19.7 Feet) at Nominal Pressure
Spray Pattern	Full Cone Spray, Uniform Water Distribution
Installation Type	Pendent-Type, Vertical Mounting (Suitable for Commercial Ceilings)
Material	Sprinkler Body: High-Quality Brass (H59-1); Deflector: Stainless Steel (304); Glass Bulb: Heat-Sensitive Borosilicate Glass
Overall Height	85-105mm (3.3-4.1 Inches), Compact Design for Commercial Interiors
Operating Temperature Range	-4°C to 50°C (-20°F to 122°F), Suitable for Standard Commercial Ambient Conditions
Service Life	10-15 Years Under Normal Commercial Operating Conditions
Certifications	NFPA 13, NFPA 13D, NFPA 13R Compliant; ISO 9001:2015 Certified; CE Certified
System Compatibility	Compatible with Wet Pipe Fire Sprinkler Systems (Most Common in Commercial Buildings)
Color	White, Silver (Customizable to Match Commercial Interior Decoration)
Packaging	Individual Carton Packaging (100 Pcs per Carton), Suitable for Bulk Transportation for Commercial Projects