Pressure control device

A pressure control device comprising:

• an oil passage body that includes therein an oil passage through which oil flows;
• a spool valve that is attached to the oil passage body;
• a body that is at least one of a lower body and an upper body that constructs the oil passage body, and the body comprises a groove-shaped flow path, and the groove-shaped flow path comprising:
• a groove part;
• and
• a widened part, connected to the groove part and having a width larger than a width of the groove part;
• a separate plate that covers the groove-shaped flow path;
• and
• a filter unit which captures foreign matters mixed in a fluid which passes through the groove-shaped flow path, wherein the filter unit comprises:
• a frame body, being in a cylindrical shape and comprising a through hole part which penetrates in a direction along a central axis of the frame body;
• and
• at least one filter member, being in a planar plate shape, and being disposed to intercept the through hole part and supported inside the frame body,
• wherein an upper part of the frame body faces a lower surface of the separate plate,
• wherein the filter unit is accommodated in the widened part so that a direction orthogonal to the central axis of the frame body is along a depth direction of the widened part.