Fire Hydrant is a key piece of equipment used to extinguish fires, usually used in conjunction with fire piping systems. Its main function is to provide a large amount of water to meet the water needs of fire-fighting vehicles and fire brigade at the fire-fighting site. Fire hydrants are usually buried underground, with only the outlet exposed above the ground for easy use.
Main types:
Above-Ground Fire Hydrant: This is the most common type of fire hydrant, with the hydrant head located above the ground. Its design includes a valve and connection points for easy connection of fire hoses. Above-ground fire hydrants are commonly installed on city streets, communities and industrial areas.
Underground Fire Hydrant: The head of this fire hydrant is partially buried underground, with only the cap exposed on the ground. Underground fire hydrants are usually used in cold areas or environments that need to be protected from freezing. This design prevents freezing and reduces snags on the ground.
Double-Outlet Fire Hydrant (Double-Outlet Fire Hydrant): Some fire hydrants are designed as a double-outlet type with two hydrant heads, allowing multiple fire hoses to be connected at the same time. This type of fire hydrant is suitable for emergency fire extinguishing situations that require a large water source.
High-Pressure Fire Hydrant: High-pressure fire hydrants are usually designed to provide more powerful water pressure and are suitable for situations where rapid fire extinguishing is required, such as high-rise buildings or special industrial environments.
Flush-Type Fire Hydrant: This type of fire hydrant can be completely retracted underground when not in use, reducing visual obstruction and improving the aesthetics of urban spaces.
Sand-Well Fire Hydrant: Suitable for desert areas or environments that require dust protection. The design of the manhole type fire hydrant can effectively prevent the intrusion of sand and dust, ensuring a reliable supply of water when needed.
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Pillar Fire HydrantPillar Fire Hydrant is an efficient fire fighting equipment specially designed for industrial, commercial and public areas. It is manufactured with high quality materials and advanced technology,
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Wet Fire HydrantIn the field of fire safety, Wet fire hydrant, as a key fire protection facility, builds an impregnable safety barrier for all kinds of places with its outstanding performance and reliable quality.
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BS336 Fire HydrantFire safety is of Paramount importance. Among various fire fighting facilities, fire hydrants, as crucial fire-fighting water supply equipment, play an irreplaceable role. This BS336 fire hydrant can
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3 Way Dry Barrel Outdoor Underground HydrantDry barrel design eliminates darnage to the hydrant caused by freezing or corrosion of the upper part. Breakway design to prevent accidents to the hydrants,where only the upper of the flange will be
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Single/Double Head StandpipesSingle outlet fire hydrant standpipes come with a swivel connection to a shaft.The standpipe has a 2.5 female URT inlet and a twist release 2.5 female instantaneous outlet.The double headed
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![2 Way Wet Fire Hydrant]()
2 Way Wet Fire HydrantA 2-way wet fire hydrant is a type of hydrant with two hose outlets, designed to be constantly filled with water for immediate use. Unlike dry hydrants, which have their main valves below the frost
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Double Head StandpipesDouble Head Standpipes: A Vital Accessory for Fire Safety EquipmentAs a well-known provider of high-quality fire safety accessories, Xinhao Fire understands the importance of having the perfect
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Single Head StandpipesEssential Components of Underground HydrantsIn the field of firefighting, having a reliable and efficient water source is crucial. This is where underground hydrants come in handy, and they are known
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Dry Type Pillar Fire HydrantReliable Fire Protection Solution Dry Type Pillar Fire Hydrant design eliminates the damage caused by freezing or corrosion of the upper part of the hydrant, ensuring its durability and long-lasting
Anti-cAnti-collision pressure regulating fire hydrant
Basic introduction
It adds a pressure regulating function on the basis of the anti-collision type above-ground fire hydrant. When the fire hydrant is turned on, when the water inlet pressure is _, different valve stem openings should maintain __ outlet pressure after hydrant. When the bolt body is hit by impact, the impact plate breaks first and is damaged. The bolt valve stops water and has no leakage. It does not affect the normal use of other fire hydrants in the same pipeline. Damaged accessories can be replaced under pressure, making maintenance easy.
Structure and use
Anti-collision and pressure-regulated above-ground fire hydrants are fire-extinguishing equipment for outdoor use. It is connected to fire pipes and can supply water to fire trucks. It can also be connected to fire hoses and water guns for direct fire extinguishing. It is a special fire-fighting facility in China. It is suitable for urban building groups, industrial, mining and petrochemical enterprises, airports and both sides of urban streets. It is composed of plug body, valve body, valve stem, valve disc, pipe joint, connecting plate, crack plate, interface, pressure regulating device and other components
Working principle of the fire hydrant
This fire hydrant is opened by a conical piston type, which can be opened easily with one hand under pressure. When the fire hydrant is opened, the connecting rod inside the fire hydrant moves vertically upward, and the area of the conical outlet on the sliding pressure reducing and stabilizing device changes. With the interception aperture, more water is delivered to the water outlet of the fire hydrant, and the pressure gradually increases until the main valve of the fire hydrant is fully opened, thus achieving the pressure reduction, pressure stabilization and pressure regulation effects of the fire hydrant.
Fire hydrant automatic water drain function
The drain valve is composed of a push rod, a cam and a plunger valve. The push rod is fixed to the fire hydrant connecting rod and moves up and down synchronously with the fire hydrant's pressure reducing valve. The cam at the bottom of the push rod is connected to a horizontally installed column. The plug valve has a vertical structure and forms a linkage mechanism that can conduct and close. When the fire hydrant is opened, the downward movement of the ejector rod contacts the plunger valve core. The valve core shortens toward the plunger valve body. The ejector rod continues to move and the valve core also moves sideways. When the valve core and valve body reach the position of _ It will be sealed so that the drain port will not leak water when the fire hydrant is working. When closing the fire hydrant, in the same way, when the push rod leaves the valve core, the spring in the valve body will automatically pop open the valve core, so that the remaining water in the fire hydrant body_ It will flow out from the automatic drain valve until it runs out.
Detailed product introduction of quick-release ground bolts
Basic principle
The rapid pressure-regulating ground bolt is a fire extinguishing equipment for outdoor use. It is connected to fire pipes and can supply water to fire trucks. It can also be connected to fire hoses and water guns for direct fire extinguishing. It is a special fire-fighting facility in China. It is suitable for urban building groups, industrial, mining and petrochemical enterprises, airports and both sides of urban streets. It is composed of a plug body, a valve body, an elbow, a valve stem, a valve disc, a pressure regulating device, an interface and other components. The exposed part is painted with red paint, and the part buried underground is painted with black asphalt paint.
Function
It acts as a seal through the close contact between the sealing gasket installed on the valve disc and the valve seat. Rotating the valve stem causes the valve disc component to reciprocate up and down, opening and closing the valve disc component, and plays the role of water inlet and water sealing. When the valve stem is rotated counterclockwise with a fire wrench, the valve disc opens and pressurized water enters the pressure regulating device. As the valve disc component continues to move upward, the exposed cross-section of the pressure regulating valve plug hole continues to increase, the water flow rate gradually increases, the outlet pressure gradually increases, and the water in the pipeline flows out of the outlet through the pressure regulating device. Use hoses and water guns to collect water or directly put out fires.
Installation requirements
Things to note when installing:
Before and after installing the fire hydrant, clean the pipes. If there are debris in the pipe, it will easily damage the sealing gasket and prevent it from being sealed.
1. Before installation, the dirt in the pipes and fire hydrants should be cleaned to ensure normal sealing between the valve seat and the gasket.
2. During installation, the support and fixation of the fire hydrant and the connection with the water supply pipe must be firm and reliable, and the drain valve must not be blocked to prevent the remaining water in the valve body from being discharged in time.
3. The installation height should be such that the water suction port of the fire hydrant is 450mm higher than the ground.
4. After installation, a sealing test should be carried out, and the test pressure is the nominal pressure. Turn the valve stem and check each connection part when the valve disc is closed and fully open. There should be no leakage within 2 minutes.
How to use+Maintenance and maintenance
When using a fire hydrant, first unscrew the water outlet cover to be used, and after connecting it to the water hose, tighten the other water outlet cover, and then use a fire wrench to rotate the valve stem counterclockwise to raise the valve disc component to _open height, at this time the drain valve is closed and the fire hydrant can supply water normally. After use, turn the valve stem clockwise to turn off the water supply. At this time, the remaining water from the fire hydrant is discharged from the drain valve.
Check fire hydrants regularly. Open and close the fire hydrant, check the drainage and sealing conditions of the valve disc and drain valve. If there is water leakage, repair it in time. Keep the end of the valve stem clean and free of debris, check whether the valve stem rotates flexibly, and apply lubricating oil to the threads of the valve stem after use. Check the sealing condition of each water outlet. If there are any damaged parts, replace them immediately.
Installation specifications and detailed product introduction for above-ground outdoor fire hydrants
What are the installation specifications for above-ground fire hydrants?
First of all, it should be installed in a prominent position. On warm floors, above-ground fire hydrants should be installed, while on cold floors, underground fire hydrants should be installed. Then the installation distance should be no more than 120 meters, no more than 2 meters from the roadside, and no less than 5 meters from the exterior wall of the house. After that, the number of fire hydrants should be calculated based on the flow rate and protection radius. The radius should not be greater than 150 meters, and the outflow rate should be calculated based on 10 to 15L/s.
What are the precautions for using fire hydrants?
1. Before using a fire hydrant to put out the fire, you should determine whether there are any wires at the incident site. If there are, you should disconnect the power supply and then use the fire hydrant to put out the fire. Otherwise, it will easily cause a very dangerous incident because the water It can conduct electricity after all. Therefore, you should confirm whether the power is out at the fire scene before starting rescue.
2. If there are a lot of people nearby at the fire site and the situation is particularly complicated, you should immediately use fire hydrants to extinguish the fire, follow the instructions of fire fighters, evacuate nearby people, and minimize the damage as much as possible. . And people who use fire hydrants to put out fires need to have relevant experience.
3. When using an above-ground outdoor fire hydrant to put out a fire, be careful not to twist the water pipe, otherwise it will easily cause the water flow to decrease. If the raw material causing the fire is chemicals such as gasoline or alcohol, water cannot be sprayed directly onto the liquid surface, and the fire must be put out from a near to far position to ensure the safety of the fire site.
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