Fire hydrant, a fixed fire tool. Its main role is to control combustibles, isolate combustibles, and eliminate sources of ignition. Firefighting systems include outdoor fire hydrant systems, indoor fire hydrant systems, fire extinguisher systems, and sometimes automatic sprinkler systems, water cannon systems, gas fire extinguishing systems, fire detection systems, and water fog systems. The fire hydrants are mainly used by fire engines to take water from the municipal water supply network or the outdoor fire-fighting water supply network. They can also perform fire extinguishing by directly connecting water hoses and water guns. Therefore, the outdoor fire hydrant system is also one of the important firefighting facilities for fighting fires.
The role of fire hydrant : It is generally believed that as long as the fire truck arrives at the fire, it can immediately extinguish the fire. In actual fact, a considerable number of fire engines equipped with fire brigades are waterless, such as high-power fire fighting vehicles, rescue vehicles, and fire lighting vehicles. They must be used in combination with fire-fighting fire engines. Some fire extinguishing fire trucks, due to their limited carrying capacity, urgently need to search for water sources during fire extinguishing. At this time, the fire hydrant exerted a huge water supply function.
How to use a fire hydrant ?
Fire hydrant is a fixed fire tool. Its main role is to control combustibles, isolate combustibles, and eliminate sources of ignition. The fire hydrants are mainly used by fire engines to take water from the municipal water supply network or the outdoor fire-fighting water supply network. They can also perform fire extinguishing by directly connecting water hoses and water guns. Outdoor fire hydrant system is one of the important firefighting facilities for fighting fires.
The correct way to use it is to open the fire hydrant door, press the internal fire alarm button (the button is the alarm and start the fire pump), then one person picks up the gun head and the hose toward the fire point, and the other person connects the hose and the valve port. The hour hand opens the valve and sprays water.
Industrial sectional doors are the most durable and longest lasting doors to ensure circulation at the areas of the factory entrance and exit of goods, loading and unloading areas.
The body of sectional door is forming by 40 mm sandwich panels. These panels provides sound and heat insulation due to the intense doped polyurethane insulation was injected between galvanized steel sheet. (50 kg/m3).
Industrial sectional door systems provide space-saving with opening parallel to the ceiling.Any opening can be used clearly . and produces in accordance with the transition range and the height in the factory buildings or warehouses.
Doors is working sliding by be the most appropriate the gap between the top level of the gate with a ceiling height within the side rasils. The door can be mounted in different ways according to the gap distance (standard, low, highlift and vertical track systems).
Industrial sectional doors can easily be opened automaticly by 230-380 V-AC/50 Hz electric motor or manualy thanks to torsion spring system that balances the weight of the door.The galvanized springs are made to be durable of 25.000 door cycles.Motor with emergency chain All the drive systems have a mechanical back-up system fitted to the reduction gearbox of the electric motor, so that the sectional door can be opened if the power fails. The reduction gearbox can then be powered using the chain.
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Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfrollershutterdoor.com