Aim\ Studying the flux in a simulant single pump and a dual pump to provide the reference information for the design of the large flow rate electromagnetic pump. Methods\ By using mercury as working medium

the flow of the single pump and the dual pump is measured under the same pressure head and the same height of the exit with the simulant direct current electromagnetic pump. Results\ The flow rate increases with the increasing of the pressure head. The flow rate ratio between the dual pump and the single pump is about 1.6. Conclusion\ It is practical to increase the flow rate of the direct current electromagnetic pump by using a dual pump.