Fuel pressure adjusting apparatus

A fuel pressure adjusting apparatus comprising:

• a casing which includes a fuel introduction port, and a fuel discharge port;
• a cylindrical member which is housed in the casing, and which includes a valve seat at an end portion thereof, and a communication passage therein, the communication passage connecting the fuel introduction port to the fuel discharge port;
• a valve element which is provided on a fuel discharge port-side of the cylindrical member in the casing, and which closes the communication passage when the valve element is seated on the valve seat;
• and
• a force-applying member which is provided at the fuel discharge port of the casing, and which applies force to the valve element in a direction toward the valve seat, wherein the force-applying member includes a concave portion which supports the valve element, the concave portion includes a bottom surface and a slanted annular side wall surface, and is formed such that there is a gap between the side wall surface and the valve element.