PUMP

PROBLEM TO BE SOLVED: To provide a pump securing flow by reducing an installation space of a check valve and minimizing decrease in a flow area and saving a space and lowering costs of the pump. SOLUTION: A motor section 2 having a fluid inflow port 11, a pump section 3 and a discharge section 4 having a discharge port 41 are integrally structured. In the motor section 2, a rotor 20 having a magnetic substance 34 is rotatably arranged on inner periphery of a stator 30 and a water flow passage 22 from the inflow port 11 is formed near a shaft of the rotor 20. In the pump section 3, impellers 33 fixed on the rotor 20 rotate. In the pump 1 for pumping the fluid from the water flow passage 22 to the discharge port 41 of the discharge section 4, the check valve 15 is arranged in an inflow passage 12 and installed obliquely to the water flow direction of the inflow passage 12.