With Q said, with l/s, m3/s, m³/h meter. Unit m³/h: that is, a number of cubic meters per hour. T is tons, 1T=1m3, so 1T/H=1m³/h is the flow of units (per hour cubic meters or tons), L/S is also the flow unit, is (L / s =L/S). 1m³/h=1000L/3600S=1L/3.6S=0.28L/S many factors affect the pump flow, can be divided into two categories: objective factors and subjective factors. Objective factors are selected by the user rated flow, the greater the rated flow of the actual work when the flow is large. Pump flow and pump performance parameters are consistent. A lot of subjective factors (1) such as customers choose submersible sewage pump models is: WQ65-25-30-7.5 user distribution pipe DN40mm, while the pump is working flow is small, we pump model are after testing, summarizing the practical results and exit diameter becomes small, flow rate decrease. Assuming the actual use of the head is 35 meters, at work, the flow will be reduced. When the user in the installation, the pipeline to form a number of corners, will also reduce the flow of water pump. The lack of water pump intake, but also affect the flow of factors. The main pipe has a branch pipe will flow becomes smaller. The import and export pipeline debris blocked. The voltage instability or voltage phase. The impeller wear etc..
