Check valve and modulator block including same

A modulator block with a three-way flow passage with one suction passage and two discharge passages or two suction passages and one discharge passage, the modulator block comprising:

• one coupling bore communicating with the three-way flow passage,
• wherein
• the coupling bore includes a check valve that is press-fitted so as to control one-way flow of a fluid, the check valve comprising:
• a valve housing including first and second internal flow passages each formed to pass through an interior of the valve housing and having an inlet through which a fluid is introduced and an outlet through which the fluid is discharged;
• a first opening and closing member provided in the first internal flow passage and opened and closed by a hydraulic pressure of the fluid;
• a second opening and closing member provided in the second internal flow passage and opened and closed by the hydraulic pressure of the fluid;
• and
• a stopper member press-fitted to the valve housing,
• the valve housing includes a body in which the outlet of the first internal flow passage and the outlet of the second internal flow passage are formed,
• on an upper end of the body, a first opening communicating with the first internal flow passage and a second opening communicating with the second internal flow passage are provided, and
• the stopper member is press-fitted to the first and second openings.