Directional changeover pump

摘要

A directional changeover pump in accordance with the present invention is capable of changing the direction of a fluid flow depending upon the rotational direction of an impeller. The directional changeover pump employs a reciprocable member for opening one discharge port and closing the other discharge port. As a result, the directional changeover pump has an extended service life and a simplified structure, since the wear of the discharge ports is automatically compensated by a spherical configuration of a reciprocating member and the sealing member between the operating components is eliminated.