Patent ID: 7896447

Claim:
A non leak check valve typed traction control valve, comprising: a plunger that is operated by an armature and includes a contact portion so as to open or close a channel, the armature being surrounded by a coil to which electric power is applied during the operation; a valve body that includes a flow hole formed in a radial direction and a pressure rise channel formed in an axial direction parallel to a main flow channel formed therein, oil flowing from a master cylinder to the flow hole when the valve body is press-fitted into a pump housing, and the plunger being received in a chamber of the valve body; a plunger seat that is received in the chamber of the valve body and forms the main flow channel in an axial direction therein; a supporting member that is inserted into the valve body so as to be adjacent to the plunger seat and supports the plunger seat; a spring that elastically supports the plunger against the plunger seat; a main plunger valve that comes in contact with or is separated from the contact portion of the plunger or the plunger seat to open or close the main flow channel; a low pressure check valve that closes the portion of the valve body facing the pressure rise channel in order to close a channel corresponding to the master cylinder and maintains pressure capable of controlling a wheel cylinder during the operation of TCS (ESP), the low pressure check valve comprising: a body shaft that is inserted into the pressure rise channel of the valve body so as to form a channel space, a fixation body that forms one end of the body shaft and has a larger diameter than the body shaft, and a sealing cap that forms a sealing contact surface coming in close contact with a low pressure check valve receiving groove, which has a large diameter at an end of the pressure rise channel; and a front filter that is fixed to an end of the valve body, filters off impurities from oil, and is press-fitted and closely supported by the pump housing.