Blog

  In the fire safety system, fire hydrants, as core water supply equipment, their scientific selection and installation directly determine the efficiency of fire emergency response. There are significant differences between indoor and outdoor environments, so the type selection and installation standards of fire hydrants need to be targeted—choosing the right equipment and installing it in the correct position can quickly control fires in the early stage and minimize loss of life and property. As a professional fire hydrant manufacturer with 20 years of industry experience, we detail the selection differences and core installation points of indoor and outdoor fire hydrants for you.   I. First, Clarify: Core Functional Differences Between Indoor and Outdoor Fire Hydrants Indoor Fire Hydrants：Focusing on the initial fire suppression within the building, it needs to be used in conjunction with fire hoses and water guns to quickly respond to fire situations in enclosed spaces such as floors, machine rooms, and warehouses, emphasizing convenience and adaptability. Outdoor Fire Hydrants：It is designed to handle large-scale fires on the exterior of buildings, providing water supply for fire engines or directly connecting hose lines for firefighting. It must be able to withstand harsh weather conditions, emphasizing high pressure, large flow rate and easy identification.   II. Mainstream Types and Selection Key Points of Indoor and Outdoor Fire Hydrants (I) Indoor Fire Hydrants: Classification by Installation Form and Selection Suggestions Type Feature Application Scenarios Selection Priority Ordinary Indoor Fire Hydrant The structure is simple, equipped with valves and interfaces. It needs to be installed in combination with a fire box. Office buildings, shopping malls, residential buildings, etc. (ordinary buildings) ★★★★★High versatility and controllable costs Pressure-Reducing and Stabilizing Indoor Fire Hydrant Built-in pressure reduction device, ensuring stable water pressure High-rise buildings (with more than 10 floors) and areas with high water pressure ★★★★☆ Prevent excessive water pressure from damaging the equipment or interfering with the firefighting process. Rotary Indoor Fire Hydrant The interface can rotate 360 degrees and is highly flexible to operate. Narrow space, computer room, underground garage ★★★☆☆Adapt to complex installation environments (II) Outdoor Fire Hydrants: Classification by Installation Position and Selection Suggestions Type Features Applicable Scenarios Selection Priority Above-Ground Outdoor Fire Hydrant Exposed installation, exposed interfaces, easy to operate Urban roads, parks, open areas ★★★★★ Easy maintenance, high recognition rate Underground Outdoor Fire Hydrant Underground installation, with only the operation port exposed, without affecting traffic. The city center, pedestrian street, dense commercial area ★★★★☆ High aesthetic quality, avoiding damage from collisions Anti-Collision Outdoor Fire Hydrant Built-in buffer device, which can reset after being impacted Parking lot, main road, construction area ★★★☆☆Essential for high-risk areas, reducing maintenance costs   III. Core Points of Indoor and Outdoor Fire Hydrant Installation Standards (Must Read!) (I) Indoor Fire Hydrant Installation Standards Position Requirement: Install near evacuation routes and stairwells for quick access; 1.1m above the ground, with the water outlet facing the wall or at a 45° angle to the wall, without obstruction. Pressure and Flow: High-rise buildings must install pressure-reducing and stabilizing types to ensure the water pressure at the most unfavorable point is ≥0.07MPa and the flow rate is ≥5L/s. Supporting Requirements: Must be installed as a complete set with fire cabinets, hoses (length ≤25m), and water guns; the fire cabinet door must have a "Fire Hydrant" label, and the opening angle ≥120°. (II) Outdoor Fire Hydrant Installation Standards Spacing Requirement: Spacing ≤120m on urban roads, ≤150m in industrial areas and parks to ensure full coverage without dead ends during fires. Burial Depth and Protection: Underground type burial depth ≥0.6m (below the frost layer), above-ground type must be equipped with anti-collision guardrails; the interface must be equipped with a dust cap to prevent debris from entering. Water Pressure Requirement: Working pressure ≥0.6MPa to meet the water absorption pressure requirements of fire trucks; the water outlet must be compatible with standard fire interfaces (DN100/DN150).   IV. Common Mistakes in Selection and Installation, Avoid These Pitfalls! Mistake 1: Mixing indoor and outdoor fire hydrants—outdoor fire hydrants are not corrosion-resistant and prone to rust when used indoors; indoor fire hydrants have insufficient pressure to meet the needs of large-area outdoor fire extinguishing. Mistake 2: Concealed installation position—indoor fire hydrants blocked by debris, outdoor fire hydrants covered by greenery, delaying fire extinguishing. Mistake 3: Ignoring anti-freezing measures—outdoor fire hydrants in northern regions not insulated, prone to freezing and cracking in winter, resulting in unusability.   V. Why Choose Our Fire Hydrants? As a fire hydrant manufacturer with 20 years of experience, our products combine quality and adaptability:   The entire series has passed 3C certification and ISO9001 quality system certification, with complete indoor and outdoor models, supporting customized production (such as special pressure, interface, and material requirements). Core components are made of brass and ductile iron, corrosion-resistant and anti-aging; outdoor models are added with anti-freezing and anti-collision designs, adapting to different climates and environments. Provide one-stop service: from selection consultation, technical scheme design to installation guidance and after-sales maintenance, the professional team follows up the whole process to ensure the equipment meets fire safety standards.   VI. Consult Now to Get Exclusive Fire Hydrant Solutions! Whether you are a construction project, property operation and maintenance company, or fire engineering company, if you need to select suitable fire hydrants according to project scenarios (indoor/outdoor, high-rise building/ordinary building, northern/southern climate), or want to know product quotes, customization plans, and installation standard details, please feel free to contact us!   📧Email：Jony@jyfire.com.cn   📱 Phone：+86-18159244550   🌐 Factory Address：福建省泉州市南安市溪美镇成功科技园区三期   （Factory Address: Phase 3, Chenggong Technology Park, Ximei Town, Nan'an, Quanzhou, Fujian Province） We will provide you with free selection consultation and technical solutions to help your project meet fire safety standards and build a solid safety line!

As the core component of automatic sprinkler systems, thermal glass bulbs may be small, but they directly determine whether a sprinkler activates accurately in the early stages of a fire. They’re like the "heart" of a sprinkler—detecting danger and triggering action, serving as the critical "sensing organ" for fire safety. Today, we’ll break down how thermal glass bulbs work, their key role, and the design logic behind them.   1. First, What Is a Thermal Glass Bulb? A thermal glass bulb is a "temperature-sensitive triggering device," typically composed of a thin-walled glass bulb, thermal expansion liquid, and sealed caps at both ends. Installed at the sprinkler’s water outlet, it serves two key functions: blocking water flow and sensing temperature. Material: Special thin-walled glass with high pressure resistance but sensitivity to thermal shock. Internal liquid: Usually kerosene, ether, or a mixed solution, chosen for its high thermal expansion coefficient. Size: Common diameter 3-5mm, length 10-15mm, compatible with most sprinkler models. 2. How It Works: 3-Step Reaction from "Standby" to "Activation" The core logic of a thermal glass bulb relies on "liquid expansion breaking the bulb." The entire process is automatic, no electricity required, and happens in 3 simple stages: Standby State: At room temperature, the intact thermal glass bulb presses against the sprinkler’s seal flap, tightly blocking pressurized water in the pipe. The sprinkler remains "closed and ready" with no water leakage. Temperature Sensing: When a fire breaks out, the ambient temperature rises rapidly. Heat transfers to the thermal liquid inside the bulb, causing it to expand quickly and exert increasing pressure on the bulb’s inner wall. Crack & Activation: Once the temperature reaches the bulb’s preset activation threshold (e.g., 68℃ for common red bulbs), the expanded liquid’s pressure exceeds the glass’s strength, and the bulb cracks instantly. With the bulb broken, the seal flap is pushed open by water pressure, and water sprays evenly through the sprinkler’s deflector to extinguish the fire.   3. Key Design: Color-Coded Temperatures for Different Scenarios A major advantage of thermal glass bulbs is "precision temperature control," with colors indicating specific activation temperatures. Choosing the right color ensures the sprinkler activates at the correct moment for your environment: Color Activation Temp Application Scenarios Red 68℃ Offices, residences, malls (most common for daily use) Yellow 79℃ Kitchens, boiler rooms (spaces with naturally higher ambient temperatures) Green 93℃ Industrial workshops, high-temperature warehouses Blue 141℃ Metallurgical workshops, furnace areas (extreme heat environments) Purple 182℃ Chemical reactors, high-temperature equipment zones   4. Why It’s the "Heart" of a Sprinkler? Core Sensing Function: Without a thermal glass bulb, sprinklers can’t detect fires automatically. It acts like a "heart’s sensor," capturing temperature abnormalities—the first critical step to triggering fire suppression. Reliable Automatic Response: No electricity, sensors, or manual operation needed. It works purely through physics, responding in seconds with an extremely low failure rate, standing by 24/7. Safety Redundancy: Once broken, the bulb can’t reset—ensuring continuous water flow until the fire is controlled. Only the affected sprinkler activates, avoiding unnecessary water waste in unaffected areas. Cost-Effective Practicality: Simple structure and low manufacturing costs, yet delivering "precision activation + reliable fire suppression"—it’s the most widely used triggering component in global automatic sprinkler systems.   5. Selection & Maintenance: Extend the "Heart’s" Lifespan To keep your sprinkler systems working reliably, follow these tips for selecting and maintaining thermal glass bulbs: Match to Scenarios: Choose red (68℃) for general commercial or residential spaces; opt for yellow (79℃+) for high-temperature environments to prevent false activation or failure to trigger. Prevent Physical Damage: Avoid hitting or squeezing the bulb during installation or maintenance—this can cause premature cracking or seal failure. Regular Inspections: Check bulbs quarterly. Replace them if you notice cracks, dirt buildup, or faded colors (recommended maximum replacement cycle: 5 years). Proper Storage: Store unused bulbs in a cool, dry place—avoid high temperatures, humidity, or severe vibration to maintain their performance. Conclusion: Small Bulb, Big Safety Impact Though tiny, thermal glass bulbs are the "core hub" of automatic sprinkler systems. Using simple yet effective physics, they create a closed loop of "temperature sensing → automatic activation → precise fire suppression," acting as invisible guardians of building fire safety. Choosing high-quality thermal glass bulbs means equipping your sprinklers with a "healthy heart"—ensuring rapid response and effective fire control when disaster strikes. If you need help selecting thermal glass bulbs for specific scenarios or want to learn about full sprinkler configurations, contact us! As a fire equipment manufacturer with 30+ years of experience, we offer a complete range of high-quality sprinklers and core components to safeguard your fire safety.

What Is a Fire Hydrant?     A fire hydrant is a fixed fire-fighting facility. Its main functions are to control combustibles, isolate oxidizers, and eliminate ignition sources. Fire hydrants are mainly divided into indoor fire hydrants and outdoor fire hydrants. For the general public, indoor fire hydrants are the most commonly used type. Indoor Fire Hydrants Indoor fire hydrants are widely used fire-extinguishing systems in buildings and serve as one of the key facilities for putting out indoor fires. The components inside an indoor fire hydrant cabinet include: Fire hose，Fire nozzle，Hydrant valve，Fire hydrant alarm button Some fire hydrant cabinets may also be equipped with a fire hose reel (portable fire water hose) and fire extinguishers. Indoor fire hydrants should be installed in public shared spaces such as corridors or halls. They are usually built into the walls of these spaces. Regardless of the decoration applied around them, they must have a clear label (marked "Fire Hydrant") and no obstacles placed in front of them—this prevents interference with the opening of the hydrant cabinet door.   How to Use Fire Hydrant?   How to use it correctly? The following step-by-step guide (with visual references) will help you master the operation of an indoor fire hydrant.   Step1 One person presses the switch to open the hydrant cabinet door, then takes out the fire hose and fire nozzle. Step2 Unfold the fire hose completely. Leave one hose connector on the ground, connect the other connector to the fire nozzle, and then move toward the fire site. Step3 Another person connects the free end of the fire hose to the water outlet of the hydrant, and helps to fully spread and straighten the hose. Step4 The person at the fire site stands in an effective position upwind or at an oblique upwind direction relative to the fire. Hold the fire nozzle with one hand and grip the connection between the nozzle and the hose with the other. Bend the front leg and straighten the back leg to get into a stable water-spraying posture. Step5 The other person, after ensuring the hose is properly arranged, quickly returns to the fire hydrant. Press the water pump start button, then turn the water outlet valve counterclockwise to the fully open position. Step6 Once water flows out, the person holding the nozzle keeps a firm grip. Aim the water jet at the base of the flame, spray in a left-right swinging motion, and slowly move forward from near to far to extinguish the fire completely.  

Introduction   Fire hazards can strike without warning, posing grave threats to lives, property, and business operations. Installing fire suppression systems stands out as one of the most potent measures to fend off fire - related catastrophes. These systems are engineered to automatically detect, control, and extinguish fires before they have a chance to spread.   What Are Fire Suppression Systems?   A fire suppression system is a sophisticated safety apparatus. It detects fires and dispenses a suppressing agent, such as water, gas, or foam, to put out the flames. In contrast to traditional firefighting approaches, these systems take immediate action to reduce the extent of damage.   Types of Fire Suppression Systems   Water - Based Systems: Utilize water sprinklers to douse fires. They are well - suited for common fire scenarios involving materials like wood and paper. Gas Suppression Systems: Release gases such as CO₂ or FM - 200. These gases work by removing oxygen from the fire environment to bring the fire under control, making them ideal for areas with sensitive equipment. Foam Suppression Systems: Perfect for fires involving flammable liquids and chemical substances. The foam forms a blanket over the fuel source to smother the fire. Dry Chemical Suppression Systems: Employ powder agents that disrupt the fire triangle (fuel, oxygen, heat), effectively extinguishing fires in various settings.   Why You Need a Fire Suppression System   Rapid Response: They automatically sense and suppress fires before they can spread widely, minimizing the time fire has to grow. Minimizes Property Damage: By acting swiftly, they prevent expensive repairs and the loss of valuable assets, saving businesses from significant financial setbacks. Ensures Regulatory Compliance: Meets the safety standards and regulations required for commercial and industrial buildings, helping businesses avoid legal issues. Safeguards Lives: Offers early intervention, creating a window for safe evacuation and reducing the risk to people in the vicinity.   Conclusion   Investing in a dependable fire suppression system is essential for fire prevention and safety. Whether it's for a commercial building, an industrial plant, or an offshore facility, the right system from Jinyuan Technology Development Co., Ltd. can be the deciding factor between a minor fire incident and a devastating loss.

Before diving into how to use a fire hose reel, it’s critical to first clarify two key points: the different types of fire hose reels available, and the specific fire scenarios where they’re safe to use.   Fire hose reels are designed exclusively for fighting Class A fires—these are fires involving ordinary combustibles like wood, paper, cloth, cardboard, or furniture. Their core function is to deliver a steady, controllable stream of water to suppress such fires. Importantly, they must never be used near flammable liquids (oil, gasoline, cooking fat) or electrical equipment. Using them in these cases risks spreading the fire (for liquids) or causing life-threatening electric shock (for electrical fires).   Two Common Types of Fire Hose Reels     Understanding the type of reel you’re working with helps ensure smooth operation during emergencies.   1. Wall-Mounted Fixed Fire Hose Reel     This is the most widely used type in New Zealand. It is permanently installed at a designated location (e.g., along building corridors, near exit points) and directly connected to the building’s main water supply via dedicated pipes.   A key maintenance note: Always keep the area 1 meter on either side of the reel clear of debris, boxes, or equipment. This ensures the reel can be fully accessed and operated without obstruction during an emergency.   2. Swing Arm Fire Hose Reel     While it shares similarities with the fixed wall-mounted type (e.g., connection to the main water supply), the swing arm reel has a distinct design: its entire assembly is mounted on a large, sturdy hinge, often housed within a dedicated cabinet.   The biggest advantage of this type is its flexibility: in an emergency, you can swing the entire reel outward from the wall. This allows the hose to be extended more easily and follow your movement as you position yourself to fight the fire, reducing strain on the hose and improving control.   Step-by-Step Instructions to Operate a Fire Hose Reel     Follow these steps carefully to ensure safe and effective use:   Break the tamper-proof seal (if present): Many reels have a seal to prevent unauthorized use—remove this first to access the reel and hose. Open the main stop valve: Locate the stop valve (usually near the base of the reel) and turn it fully to the “open” position. This connects the reel to the water supply. Extend the hose to the fire: Pull the hose out to the distance needed to reach the fire. Unlike flat hoses, you do not need to unroll the entire length—only extend what’s necessary (this saves time and reduces clutter). Turn on the nozzle: Grip the nozzle firmly, then twist or squeeze it (depending on the design) to release the water. Start with a gentle flow to adjust your aim, then increase as needed. Target the base of the fire: Always direct the water stream at the bottom of the flames, not the top. This attacks the source of the fire (the burning fuel) rather than just the smoke or flames, which is critical for extinguishing it quickly. Tip: Use only enough water to put out the fire. Excess water can cause secondary damage to property, electronics, or documents. Shut off the nozzle after extinguishing: Once the fire is out, close the nozzle first to stop the water flow. Rewind the hose partially: With a small amount of water still in the hose (this makes it more flexible), rewind it onto the reel in neat, even layers. Avoid pulling too tightly—this prevents kinks or damage to the hose. Close the main stop valve: After the hose is partially rewound, turn off the stop valve to 切断 the water supply to the reel. Release remaining pressure: Open the nozzle again briefly (over a bucket, if possible) to release any leftover water pressure in the hose. This prevents the hose from bulging or leaking when fully rewound. Secure the nozzle and finish rewinding: Close the nozzle, fully rewind the hose until it’s neatly stored, and place the nozzle back into its holder on the reel.   For more detailed information about fire hose reel maintenance, compliance with local fire safety codes, or choosing the right reel for your space, feel free to contact us.

 Maintaining Your Fire Hoses As a leading fire hose manufacturer, we understand that your equipment is only as reliable as the care it receives. This guide provides essential steps to maximize the service life and reliability of your fire hoses. Step One Regularly inspect and maintain the condition of the water hose. Step Two Regular pressure tests are conducted and the test results are recorded. Step Three Clean the dirt and silt on the water hose in time. Step Four Keep the water hose dry and do not store it in a damp place！ Step Five Store the hose correctly to prevent sudden bending.  • STEP 1 Regular visual inspections should be carried out. Technicians hold flashlights to carefully examine the surface of the water hose for any wear, cracks or bulges. Regularly repackage the hoses stored in compartments (for example, every 3 to 6 months) to prevent permanent creases and flat spots.  • STEP 2 For pressure testing, technicians connect the water hose to the pressure testing equipment and monitor the pressure gauge to ensure that the water hose has no leakage at the specified pressure. Keep and maintain a log for each hose, recording its purchase date, each use, inspection and test results. This helps to track its history and retirement plans.  • STEP 3 To clean the water hose, technicians use a low-pressure water gun to rinse the surface of the water hose to remove dirt and residues. Ensure the safety of the coupling, that the threads are not stripped and the washers are intact. Immediately rinse the hose with clean water after use to remove debris, mud, chemicals or salt water. Over time, these contaminants will degrade the inner liner and outer sheath.  • STEP 4 To ensure proper drying, technicians hang the cleaned water hoses on dedicated racks to guarantee good ventilation and dryness. Dry the hose in a well-ventilated and cool place. Prolonged exposure to ultraviolet rays can make rubber and fabrics brittle. Never store wet hoses! The moisture trapped inside can cause mold, thereby weakening the fabric and lining and leading to delamination.  • STEP 5 Store properly. Keep the hose in a cool, dry and dark place. Extreme temperatures and humidity are harmful. Technicians can coil the dried water hose in an "8" shape and neatly place it on the storage rack. Designed to prevent sharp bending, crushing and pressure on the coupling.