Patent ID: 8910656

Claim:
A fluid controller comprising: a body unit having an internal flow path through which fluid flows; a fluid controlling valve that is attached to the body unit and controls the fluid flowing through the internal flow path; a pressure sensor that is attached to the body unit and detects a pressure in the internal flow path; and a casing that houses therein the fluid controlling valve and the pressure sensor attached to the body unit, wherein the body unit extends in a longitudinal direction, while one of the faces thereof extending parallel to the longitudinal direction is designated as a component part attachment face, the fluid controlling valve is attached to the component part attachment face, whereas the pressure sensor is attached to the component part attachment face in such a manner that a pressure sensing surface thereof is positioned substantially perpendicular to the component part attachment face and substantially parallel to the longitudinal direction, and on at least one of lateral walls of the casing extending parallel to the longitudinal direction, an inner surface thereof is arranged to be uneven so that a section that faces the fluid controlling valve and the pressure sensor is arranged to be a thin section, whereas at least another section that does not face the fluid controlling valve and the pressure sensor is arranged to be a thick section that is thicker than the thin section.