Valve for anti-lock brake system

A valve for an anti-lock brake system comprising:

• a valve core;
• an armature located below the valve core and having a ball at one end thereof;
• a cylindrical sleeve coupled to outer circumferences of the valve core and the armature and guiding the armature to move backward and forward;
• a first elastic member installed between the valve core and the armature;
• a valve housing coupled to one end of the sleeve and having a longitudinal hollow space therein;
• a seat plunger installed in the hollow space so as to be able to move backward and forward and having a first orifice opened and closed by the ball;
• a second elastic member installed between the seat plunger and the valve housing;
• a seat having an outlet and a second orifice that is opened and closed by the backward and forward movement of the seat plunger and communicates with the first orifice;
• and
• a seat housing coupled to a lower portion of the valve housing and an outer circumference of the seat, supporting the valve housing and the seat such that the valve housing and the seat are spaced apart from each other, and having an inlet between an upper end of the valve housing and a lower end of the seat,
• wherein the valve housing includes a first flange having a recess/groove formed in a bottom surface of the first flange, and the seat housing is press-fitted into the recess/groove, and
• wherein the seat and the valve housing are press-fitted into an inner circumference of the seat housing.