In order to study the performance of the two-position three-way solenoid valve as a diverter under a small flow rate, and a test was conducted to investigate the diverting time difference of a certain type of solenoid valve. The result shows that the diverting time difference of the solenoid valve is negative, and the difference increases as the flow rate decreases. The solenoid valve has good performance in high flow range. In the low flow range, the correction method by double exponential decay function can effectively reduce the uncertainty introduced by diverter. The Study shows that it is highly feasible to use a solenoid valve as a diverter for the standard facility for small liquid flow.