How to freeze outdoor fire hydrant in winter.

Best answer: In the design of fire fighting pipe network, the buried depth can be appropriately increased, and the ground temperature can be used for heat preservation (used for underground bolts). When the fire hydrant valve is closed, automatically drain the water valve to discharge the residual water from the hydrant body, so as to prevent the hydrant body from freezing and cracking. Epoxy zinc-rich paint is used for fire hydrants, which has excellent antirust performance, strong adhesion, quick drying at normal temperature, high zinc powder content in the paint film and cathodic protection.

1. When designing the fire fighting pipe network, the buried depth can be appropriately increased, and the ground temperature can be used for heat preservation (used for underground bolts).

2. When the valve of the fire hydrant is closed, automatically drain the water valve to discharge the residual water from the hydrant body to avoid frost crack of the hydrant body.

3. The fire hydrant adopts epoxy zinc-rich paint, which has excellent antirust performance, strong adhesion, quick drying at normal temperature, high zinc powder content in the paint film, cathodic protection, and excellent water and rust resistance, thus making the fire hydrant more aging-resistant and prolonging the service life of the fire hydrant.

Fire hydrant, officially called fire hydrant, is a fixed fire-fighting facility, which is mainly used to control combustibles, isolate combustion-supporting materials and eliminate ignition sources. Indoor fire hydrant and outdoor fire hydrant. The fire fighting system includes outdoor fire hydrant system, indoor fire hydrant system, fire extinguisher system, and some automatic sprinkler system, water cannon system, gas fire extinguishing system, fire detection system and water mist system, etc. The fire hydrant suit is generally composed of fire box+fire hose+water gun+buckle+bolt+clip, etc. The fire hydrant is mainly used for fire engines to take water from municipal water supply network or outdoor fire water supply network for fire fighting, and can also be directly connected with water hose and water gun to extinguish fire. Therefore, the indoor and outdoor fire hydrant system is also one of the important fire fighting facilities.

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