Patent ID: 9528613
Filing Date: 2016-12-27
CPC Classification: F16K,Y02E

Claim Text:
1. A coolant control valve for a fuel cell stack in a fuel cell vehicle, comprising: a body housing; a plunger and a plunger shaft selectively opening ports of the body housing which are connected to a fuel cell stack, a pump, and a radiator, respectively; a seal disposed around the plunger shaft, in an aperture of an actuator housing through which the plunger shaft is disposed; and a space with a side open defined by an inside portion of the seal so that a shaft sealing portion in close contact with the plunger shaft is pressed against the plunger shaft by pressure of a coolant flowing within the space, wherein a metal insert is inserted outside an inner wall of the space of the seal and is exposed towards the space filled with the coolant.