The function of American fire hydrant with antenna

In America, fire hydrants have no antenna. Common sense about fire hydrants in the United States is as follows:

Fire hydrant, officially named as fire hydrant, is a fixed fire control facility, whose main function is to control combustible substances, isolate combustion-supporting substances and eliminate fire sources. There are indoor hydrants and outdoor hydrants. Fire fighting systems include outdoor fire hydrant system, indoor fire hydrant system and fire extinguisher system, and some will also have automatic sprinkler system, water cannon system, gas fire extinguishing system, fire detection system and water mist system. Fire hydrants are mainly used for fire engines to take water from municipal water supply network or outdoor fire water supply network to extinguish fire, and can also be directly connected with hoses and water guns to extinguish fire. Therefore, the indoor and outdoor fire hydrant system is also one of the important fire fighting facilities.

Fire hydrants are divided into six types:

1. Indoor fire hydrant Indoor fire hydrant is an indoor pipe network that supplies water to the fire site. It is a fixed indoor fire-fighting facility in factories, warehouses, high-rise buildings, public buildings, ships and so on. Usually installed in fire hydrant box, it is used together with fire hoses and water guns. The decompression fire hydrant is one of them.

2. Outdoor fire hydrant Outdoor fire hydrant is a water supply facility installed on the fire water supply pipe network outside the building. It is mainly used for fire engines to take water from municipal water supply network or outdoor fire water supply network to extinguish fire. You can also directly connect the water pipe and water gun to extinguish the fire. Fire?Hydrant?

Photography: Yu Kun Therefore, the outdoor fire hydrant system is also one of the important fire fighting facilities.

3.

Rotary fire hydrant Rotary fire hydrant is an indoor fire hydrant whose bolt body can horizontally rotate 360 degrees relative to the base connected with the water inlet pipeline. It has the characteristics of relative rotation between the bolt body and the base, so it can be installed in an ultra-thin box, making it possible to make the box thinner. When not in use, the water outlet of the bolt body can be rotated to be parallel to the wall, and the door of the box can be closed; When in use, the water outlet of the plug body is screwed out to be vertical to the wall, so that the water pipe can be connected, and the operation is convenient.

4. Underground fire hydrant Underground fire hydrant is an outdoor underground fire water supply facility. Used for supplying water to fire engines or directly connecting with hoses and water guns to extinguish fires. It is a special facility for outdoor fire water supply. Installed underground, it does not affect the city appearance and traffic. It consists of a valve body, an elbow, a valve seat, a disc, a drain valve, a valve stem and an interface. Underground fire hydrant is an indispensable fire extinguishing and water supply equipment in cities, factories, mines, power stations, warehouses, docks, houses and public places. Especially in urban areas and areas with few rivers. The product has reasonable structure, reliable performance and convenient use. When using underground fire hydrants, there should be obvious signs. Underground fire hydrants are common in cold areas.

5. Ground fire hydrants Ground fire hydrants are outdoor ground fire water supply facilities. Used for supplying water to fire engines or connecting straight fire hydrant structures with hoses and water guns to extinguish fires. It is a special facility for outdoor fire water supply. Its upper part is exposed from the ground, with obvious signs and convenient use. It consists of a valve body, an elbow, a valve seat, a disc, a drain valve, a valve stem and an interface. Above-ground fire hydrants are necessary fire-fighting equipment in cities, especially in urban areas and areas with few rivers to ensure fire water supply. All factories, mines, warehouses, docks, freight yards, high-rise buildings, public places and other crowded places where conditions permit should be installed.

6. Double-valve and double-outlet fire hydrant Indoor fire hydrant is a kind of interface with valve installed on the building fire control pipe network, which provides water for fire. It is indoor fixed fire fighting equipment in factories, warehouses, high-rise buildings and ships. Used to put out fires in buildings. Usually installed in fire hydrant box, it is used together with fire hoses and water guns. 7. Outdoor directly buried telescopic fire hydrant Outdoor directly buried telescopic fire hydrant is a kind of fire hydrant, which is characterized in that when in use, the fire hydrant usually shrinks below the ground and pulls out the ground to work. Compared with the above-ground type, it avoids collision and has good anti-freezing effect; Compared with the underground type, it does not need to build underground wells, and it is connected above the ground, which is convenient for work. In addition, the interface direction of outdoor directly buried telescopic fire hydrant can rotate 360 degrees according to the need of water connection, which is more convenient to use. This is an innovation!