JETTING PUMP AND PUMP VESSEL HAVING SAID JETTING PUMP

摘要

Provided are: a jetting pump that is compact, is easily produced, and has high reliability with respect to the seal of a check valve; and a pump vessel having the jetting pump. At least one of the check valves used in the jetting pump (21) is a check valve unit (81 (82)) provided with a check mechanism having: a base provided with a valve hole; and a film overlapping the base in a manner able to open and close the valve hole. The check mechanism allows a fluid to pass only in one direction from the base side to the film side. The base has: a valve section to which the valve hole is provided and the film is superposed; and an attachment section for attaching to an attachment subject. The valve section is provided to a region that does not overlap the attachment section in a manner so that the film does not contact the attachment subject.