System for testing performance of overlapped water supply equipment

The utility model provides a system for testing the performance of overlapped water supply equipment. By stimulating the pressure fluctuating condition of a water inlet side and the flow changing condition of a water outlet side of the overlapped water supply equipment, the system can comprehensively test each performance parameter of the overlapped water supply equipment under various working conditions, thus being capable of reducing the energy consumption, and saving the energy resource. The system comprises the overlapped water supply equipment, wherein a water inlet of the overlapped water supply equipment is communicated with the outlet of a water tank by a pipe of the water inlet side, a water outlet of the overlapped water supply equipment is communicated with the inlet of the water tank by a pipe of the water outlet side, the water tank is communicated with a tap water compensating pipe, and the pipe of the water inlet side is provided with at least one of groups of water pump machine sets which are