ZSFY Series Pre-Action Alarm Valve Fire Protection System
The ZSFY pre-action alarm valve combines the merits of dry and wet sprinkler systems, adopting a double-interlock design to prevent accidental water discharge. It features precision trigger control, compact space-saving structure, quick reset, and low-temperature resistance. Ideal for data centers, archives and cold storage, it delivers reliable, low-maintenance fire protection for high-value facilities.
Description
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Products Description
Ca-Fire ZSFY Series Pre-Action Alarm Valve
The ZSFY Series pre-action alarm valve serves as the pivotal core control component of a pre-action sprinkler system, skillfully integrating the unique advantages of both dry and wet pipe sprinkler systems to deliver optimal fire protection performance. Unlike traditional wet pipe systems that may cause accidental water damage due to pipe leakage or valve malfunction, and dry pipe systems that might experience delays in water discharge, the ZSFY Series pre-action alarm valve effectively addresses these pain points through its advanced double-interlock mechanism. This mechanism requires two independent and simultaneous trigger signals-one from the fire detection system (such as smoke detectors or heat detectors) and another from the activation of a sprinkler head-to unlock the valve and allow water flow. This dual-safety design fundamentally eliminates the risk of false water discharge, making the ZSFY Series an indispensable fire protection device for high-value sites where water damage could result in catastrophic economic losses or irreversible damage to critical assets. Such sites include data centers housing sensitive electronic equipment, archives storing valuable documents, museums with precious cultural relics, and precision manufacturing facilities, where even a small amount of unintended water leakage can lead to significant consequences. Additionally, the valve is engineered to maintain system stability in various harsh environments, ensuring reliable operation when a fire occurs, thus providing comprehensive and secure fire protection for important premises.
Installation Compatibility & Space-Saving Design
Designed with a compact integrated structure, the valve body integrates the control module, pressure detection component and reset mechanism into a single unit, eliminating the need for separate external mounting of auxiliary components, which makes its overall volume 30% smaller than that of traditional pre-action valves of the same specification. For example, the ZSFY DN100 model has an overall length of only 380mm and a width of 220mm, which is particularly suitable for installation in narrow spaces such as small equipment rooms, ceiling interlayers, underground pipe shafts and wall-mounted equipment cabinets where space is at a premium. Unlike traditional valves that only support single installation orientation, this series supports both horizontal and vertical installation modes, and the built-in integrated mounting bracket is made of high-strength galvanized steel, which can be directly fixed to the wall or floor with expansion bolts-no need for customized brackets or additional reinforcement structures, greatly reducing the difficulty and cost of on-site installation. In terms of pipeline compatibility, the inlet and outlet ports adopt universal flange standards that comply with both GB/T 9119-2010 and ANSI B16.5, which are fully compatible with most mainstream seamless steel pipes, galvanized steel pipes and plastic pipes on the market, covering pipe diameters from DN80 to DN250. This compatibility avoids the need for pipeline transformation or flange adapter replacement during installation, saving time and material costs for users. In addition, the valve is equipped with a built-in level gauge and positioning scale, which helps on-site technicians quickly align the valve with the pipeline during installation, ensuring the accuracy of installation angle and reducing the risk of water leakage caused by misalignment. For special installation scenarios such as ceiling-mounted installations, the valve is designed with a detachable decorative cover that can be easily installed after the valve is fixed, ensuring the overall aesthetics of the installation while protecting the valve body from dust and debris. The installation process is also optimized for efficiency: two technicians can complete the entire installation and connection within 1 hour, which is 50% faster than the installation time of traditional pre-action valves, effectively shortening the construction period of the fire protection system.
Low-Temperature Adaptation & Anti-Freeze Protection
The valve body is equipped with a high-performance integrated anti-freeze layer, which is made of a composite insulation material with low thermal conductivity (≤0.03 W/(m·K)) and high compression resistance, effectively isolating the internal components from the external low-temperature environment. Unlike traditional pre-action valves that require additional electric heating strips or insulation sleeves to resist freezing, the ZSFY Series can maintain stable operation in environments with temperatures as low as -20°C, and even in short-term extreme low-temperature conditions of -25°C, it can still ensure the integrity of internal components and the reliability of interlock triggering, without the need for any auxiliary heating equipment, which not only saves energy consumption but also reduces the hidden danger of equipment failure caused by heating system malfunctions. The internal core components, including the valve core, seal ring and signal sensor, are all treated with special low-temperature resistant technology: the valve core is made of cold-resistant alloy material that can resist brittle fracture at low temperatures, and the seal ring adopts modified EPDM rubber with a low-temperature resistance of -40°C, which can maintain good elasticity and sealing performance without aging or cracking in low-temperature environments. In addition, the valve is equipped with an integrated anti-condensation system, which includes a built-in moisture absorption module and a breathable exhaust valve. The moisture absorption module can effectively absorb the water vapor in the dry pipe, while the breathable exhaust valve can discharge the condensed water in time, preventing water vapor condensation from forming ice crystals inside the valve or corroding internal components, thus avoiding valve jamming or seal failure caused by freezing.
Installation & Maintenance Advantages
After the valve is activated in a fire emergency, it features an ergonomically designed external reset handle that enables quick and hassle-free reset, eliminating the need for disassembling the entire valve body or replacing any internal core components- a key advantage over traditional pre-action valves that require time-consuming disassembly and reassembly for reset. The reset process is intuitive and efficient: simply rotate the external handle 90 degrees clockwise until it locks into place, and the valve will automatically return to its closed state, ready for subsequent operation, with the entire reset process taking no more than 30 seconds. This design not only saves valuable time during post-fire system recovery but also reduces the need for professional maintenance personnel, allowing on-site staff to complete the reset with minimal training. The seal assembly of the valve adopts a modular detachable design, which is uniquely engineered for on-site quick replacement: the seal ring is fixed with a snap-on structure, requiring no special tools-only a standard screwdriver is needed to remove the snap ring, take out the old seal, and install the new one, with the entire replacement process completed in as little as 15 minutes. Unlike traditional seal assemblies that require gluing or welding, this detachable design avoids damage to the valve body during replacement and ensures consistent sealing performance after maintenance.
Our address
NO.8, YUANFENG ROAD, MEIYUAN VILLAGE, KANGMEI TOWN, NANAN CITY, QUANZHOU CITY, FUJIAN CHINA
+86 18160950625
miki@ca-fire.com
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