Patent attributes
A water pump includes an impeller, a whirl chamber, a pump body including the impeller and the whirl chamber, a cover case portion and a gasket portion being positioned between the pump body and the cover case portion. The cover case portion is formed with an inlet flow passage in which a fluid is introduced to the whirl chamber and an outlet flow passage in which the fluid is discharged from the whirl chamber. The gasket portion is formed with an inlet hole opening from the whirl chamber to the inlet flow passage and an outlet hole opening from the whirl chamber to the outlet flow passage. The gasket portion includes a portion covering at least one of the inlet flow passage and the outlet flow passage in a state where the portion of the gasket portion is exposed by not being in contact with the pump body.
