Patent ID: 8182048

Claim:
A valve for an anti-lock brake system, the valve comprising: a valve core; an armature positioned below the valve core and provided at an end thereof with a ball; a cylindrical sleeve coupled with outer peripheral surfaces of the valve core and the armature to guide an up/down movement of the armature; a first elastic member installed between the valve core and the armature; a valve housing coupled to one end of the cylindrical sleeve and formed therein with a hollow section that extends lengthwise along the valve housing, the valve housing having a groove circumferentially located on its bottom surface; a valve seat press-fitted into the hollow section and formed with a first orifice which is open/closed by the ball; and a filter seat press-fitted into the valve housing and provided with an inlet and an outlet, which are positioned at a circumferential portion and a lower portion of the filter seat, respectively, wherein the filter seat has a large-diameter section press-fitted into the groove of the valve housing and a small-diameter section press-fitted into an outlet fluid path of the valve seat, and the filter seat has a step section having a step shape cross-section view and disposed at an inner circumferential side surface of the large-diameter section such that the bottom surface of the valve housing is securely press-fitted to the step section.