Fluid control valve unit and valve timing changing device

A fluid control valve unit comprising:

• a fluid control valve comprising a sleeve in a bottomed cylindrical shape that defines an axis and has an inlet for fluid and a communication port communicating with outside for fluid to pass through, and a spool slidably disposed in the sleeve for opening and closing the communication port;
• a cylindrical passage member comprising an inner peripheral surface to which the sleeve is fitted, a passage for fluid leading to the communication port, an annular receiving part facing one end of the sleeve in a direction of the axis, an opening formed adj acent to the annular receiving part and allowing fluid to flow in, and an annular groove formed adjacent to an other end of the sleeve in the direction of the axis and recessed from the inner peripheral surface;
• a filter member comprising an elastic part sandwiched between the one end of the sleeve and the annular receiving part of the passage member and exerting a biasing force in the direction of the axis;
• and
• a snap ring fitted in the annular groove for receiving the other end of the sleeve accommodated in the passage member and detachably receiving the spool.