PS150 fire hydrant quality fire equipment outdoor ground fire hydrant foam fire hydrant manufacturer direct sales

Description :

　　Selection of Outdoor Fire Hydrants

　　1. The selection of underground and above ground fire hydrants should be tailored to local conditions. In some cities, the planning and installation of fire hydrants in the municipal water supply network emphasizes the use of underground type, while in other cities, the original underground type has been completely transformed into ground type. Underground fire hydrants have the advantages of strong concealment, no impact on urban aesthetics, minimal damage, and anti freezing in cold areas. However, as a user and management department, it is not very convenient to find and maintain, and it is easy to be buried, occupied, and compressed by building vehicles. A large number of underground fire hydrants require well protection, which requires a large amount of capital investment. At the same time, they occupy a considerable position in urban underground pipeline planning, bringing difficulties to the planning. On the other hand, above ground fire hydrants are more conspicuous, easy to find, and convenient to use and maintain, but they are prone to damage and theft of water. If a fire hydrant is truly installed within 120 meters according to the specifications, it will inevitably have a certain impact on the urban streetscape. Fire hydrants are mainly used for extinguishing fires and obtaining water. Therefore, as the department using fire hydrants, it is the desire and requirement of the fire department to quickly find fire hydrants, obtain water quickly, conveniently, and easily. The selection of fire hydrants should be tailored to local conditions, taking into account both the usage and urban landscape, as well as maintenance and management. Therefore, the combination of underground and ground types should be considered. And the specifications and models of fire hydrants should not be too many, making them easy to use and maintain.

　　2. The outlet diameter of the fire hydrant shall not be less than 100mm. With the increase of urban buildings and population density, the difficulty of extinguishing fires has increased. In order to ensure the water pressure and quantity requirements for extinguishing fires, it is necessary to ensure that at least one outlet diameter of the fire hydrant is not small, with a diameter of not less than 100; mm。

　　3. The opening and closing direction of the fire hydrant should be uniform, both clockwise and counterclockwise. The screw rod should be made of stainless steel, and the sealing cup should be made of EPDM rubber or nitrile rubber. The anti-corrosion inside the cavity should meet the hygiene standards of drinking water and be consistent with the requirements of the valve.

　　Key points for selection

　　1. When the building is within a 150m radius of municipal fire hydrant protection and the fire water consumption does not exceed 15L/s, outdoor fire hydrants may not be installed.

　　2. Outdoor fire hydrants should be evenly arranged around high-rise buildings and should not be concentrated on one side of the building.

　　3. The distance between the outdoor fire hydrant of civil air defense engineering and the entrance of civil air defense engineering should not be less than 5m.

　　4. The outdoor fire hydrant in the parking lot should be installed along the perimeter of the parking lot, and the distance from the nearest row of cars should not be less than 7m, and the distance from the gas station or garage should not be less than 15m.

　　5. Outdoor fire hydrants should be installed in locations that are convenient for fire trucks to use.

　　6. Outdoor fire hydrants should be above ground, and when underground fire hydrants are used, there should be clear signs. Underground construction is preferred in cold regions, while above ground construction is recommended in non cold regions. If conditions permit, anti-collision construction can be used for above ground construction.

　　7. Outdoor above ground fire hydrants should have a diameter of 150mm or 100mm and two hydrant ports with a diameter of 65mm. Outdoor underground fire hydrants should have one nozzle with a diameter of 100 and one with a diameter of 65mm.

　　8. The protection radius of outdoor fire hydrants should not exceed 150m, and the spacing should not exceed 120m.

　　9. The distance between outdoor fire hydrants and the roadside should not exceed 2 meters, and the distance from the exterior wall of the house should not be less than 5 meters.

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