Aisan Kogyo Kabushiki Kaisha

Mitsuyoshi Itahara

Hiroshi Kawazoe

Makoto Fukui

Kazuhiro Yoneshige

Sadatsugu Nagata

Masahiro Kobayashi

Kazuhiro Nakamura

Hideyuki Fukuda

In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.

Double eccentric valve

A pressure regulating valve to regulate a pressure of fuel gas includes a valve seat, a valve element movable into or out of contact with the valve seat to shut off or allow a flow of fuel gas, and a piston placed facing the valve element by interposing the valve seat and being located downstream of the valve element in a flowing direction of the fuel gas. The pressure regulating valve further includes a holder placed more upstream than the valve element in the flowing direction of fuel gas. The holder includes a bottom-closed cylindrical part opening toward the upstream side, and a through hole formed through the bottom-closed cylindrical part from its inner peripheral surface to outer peripheral surface.

Pressure regulating valve

Growing community of inventors

Obu, Japan

Mitsuyoshi Itahara