Does the code require a butterfly valve to be installed between the fire hydrant and the main pipe for easy maintenance?
A butterfly valve can be installed between the standard fire hydrant and the main pipe. The installed butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment. The butterfly valve of the Butterfly valve firefighting manufacturer needs to be checked during use to prevent it from being blocked by foreign matter. At the same time, it is also necessary to regularly check the use of butterfly valves, find problems and solve them in time.
What is the principle of the automatic drain valve on the outdoor underground fire hydrant？
The 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 trucks to take water from the municipal water supply pipe network or outdoor fire water supply pipe network to put out fires. One of the important fire facilities.
The fire hydrant is installed underground to avoid accidental damage, prevent freezing, and not affect the environmental landscape. Its piping valve is only used to shut off the water source when the fire hydrant is damaged or needs to be repaired and replaced, and it is usually open.
The main function of the automatic drain valve on the fire hydrant is to drain the water from the upper part of the fire hydrant after the fire hydrant is used. The main purpose of this is to prevent freezing, because if there is water in the upper part, the fire hydrant will be frozen and cracked in cold areas. Automatic drain valves are generally used on above-ground fire hydrants.