As America, Inc.

Koji Shimizu

Walter Pitsch

Marin Marinov

Eric B Soberano

Kojiro Watari

Provided are valve devices and flow heads for a valve device. A valve device can include a valve body () that opens and closes a valve hole () to allow communication between a primary flow path () and a secondary flow path (), a back pressure chamber () defined at the back side of the valve body, a small hole () that is provided in the valve body to allow the primary flow path of and the back pressure chamber to communicate with each other, and a pin () that has a straight portion inserted into the small hole to clean the small hole by relative motions of the small hole and the straight portion. A flow head () may be annular and include one or more notches along a perimeter and be configured to engage with an inner peripheral surface of an upper end portion of an inner barrel of the valve device.

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Kitanagoya, Japan

Koji Shimizu