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[ Huaqiang Security Network News ] 
Before introducing the indoor fire hydrant model to everyone, first understand the concept of indoor fire hydrant, indoor fire hydrant, is an important part of the fire water system, it is installed in the indoor fire box, the general nominal diameter (mm): DN50, DN65 two, The nominal working pressure is 1.6MPa, and the strength test pressure is 2.4MPa. Applicable medium: clear water, foam mixed liquid.
Usually indoor fire hydrants can be divided into ordinary type, decompression regulator type, rotary type, etc. The fire extinguishing method is to connect the artificial water belt to the bolt to extinguish the fire. In addition, there is a fire hydrant button in the fire hydrant box. Press this button to start the fire pump remotely. Replenish the fire hydrant.
Type of indoor fire hydrant
The method of preparing the indoor hydrant model is as specified in GN 11.
Tag example
Example 1, a right-angle single-valve single-outlet type indoor fire hydrant with a nominal diameter of 65 mm
Tag: SN 65 GB 3445-93
Example 2, the nominal diameter is 50mm, decompression type double valve double outlet type indoor fire hydrant
Mark: SNSSJ 50 GB 3445-93
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