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# What is the flow rate of a fire hose

Dec 10, 2015

Fire hose is used to transport such as high pressure water or foam fire retardant liquid hose. But what is the flow rate of a fire hose, this involves computing problems. The traditional fire hose with rubber lining, outside surface wrapped in linen woven fabrics. Advanced fire hose is made of polyurethane polymer materials such as. The two ends of the fire hose has metal joint, can be connected to another hose to extend from or connected to the nozzle to the increase of liquid jet pressure.Of course, what is the flow rate of a fire hose ,this problem is also related to many factors, so in the calculation, also need to consider.

However, what is the flow rate of a fire hose, how much is the need to know the diameter of the hose, the rate of about 65 diameter high-pressure hoses such as calculated at 5 l/s. For the actual flow, it needs to see pressure flow velocity. Different actual flow pressure flow is not the same. Fire engineering in 65 tubes, he brought a fire hydrant. Each fire hydrant, is calculated at 5 l/s.

And, what is the flow rate of a fire hose, the specifications of products, and the need to understand, different specifications,pipe diameter is different also, fire hose flow calculation result is different. Such as product specifications: 8 Φ65 lining with glue; 13 Φ65, Φ80 glue; 16 Φ65 line glue tape. Design work pressure of 0.8 MPa, 1.0 MPa, 1.3 MPa, 1.6 MPa hose, its axial elongation under design working pressure and the diameter of the inflation rate should not be greater than 5%. Design work pressure 2.0 MPa to 2.0 MPa, hose, its axial elongation under design working pressure and the diameter of the inflation rate should not be greater than 8%. In under the action of water pressure along the flow direction, the hose should not produce counterclockwise twist. If how much is simply about what is the flow rate of a fire hose, without a clear answer, because it is a variable, need to get the answer by calculation.