Solenoid valve, vehicle brake hydraulic pressure control apparatus and solenoid valve fabrication method

A solenoid valve comprising:

• a fixed core in which a flow path is formed;
• a movable core which is provided movably in relation to the fixed core;
• a coil configured to move the movable core by an electromagnetic force;
• a first valve seat member and a second valve seat member which are fixed in the fixed core;
• a valve body member which is disposed between the first valve seat member and the second valve seat member;
• and
• a spring member which is interposed between the valve body member and the second valve seat member,
• wherein the valve body member comprises:
• a main body portion;
• a first valve portion which is provided at one end face of the main body portion so as to project therefrom;
• and
• a second valve portion which is provided at the other end face of the main body portion so as to project therefrom,
• wherein the first valve portion is seated on a valve seat surface of the first valve seat member by a biasing force of the spring member,
• wherein, as a result of the valve body member being pushed out by the movable core, the first valve portion is caused to move away from the first valve seat member, and the second valve portion is then seated on a valve seat surface of the second valve seat member, and
• wherein a seal diameter of the first valve portion and a seal diameter of the second valve portion differ from each other.