From the graph shows that 1, 2, and 3. When the valve is opened, there will be 70% for the same flow rate and range of 10-50%, there will be a lot different by.1, there is almost no flow occurs at the beginning of a 20%, and not so far in connection with the opening of the valve, but is gradually increased, and the relationship meets the open valve after opening very much. 2 and 3 If the valve is open, it is less and less flow rate gradually increased the flow rate is increased by the ongoing relationship with the opening of the valve.Therefore, 1 conclude that it should not be used as a flow control valve, but should be used as a control valve to open, because in the beginning of turning control of flow rate. Sections 2 and 3 should be used as a flow control valve, flow, much of which is based on conclusions from the experiment above.
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