Abstract: The present invention provides a cooling water reservoir for a fuel cell vehicle, in which a drain valve operated by traveling wind is mounted in a reservoir housing of the reservoir such that unnecessary water in an amount corresponding to the amount of product water, generated in the fuel cell stack during operation of a fuel cell system and flowing in the reservoir housing, can be discharged through the drain valve automatically in real-time, thus preventing the water in the reservoir housing from overflowing due to the inflow of the product water generated in the fuel cell stack during operation of the fuel cell system.

Abstract: The present invention provides a spool seat with a positioning structure, which resolves the shortcomings of the assembly of a typical spool ceramic disc and spool seat. The spool seat of the present invention is provided with a chamber space for locating the fixed ceramic disc. The chamber space is provided with an internal locating portion which comprises an internal locating flange and external locating flange. An external locating portion is protruded from the chamber space. The chamber space is divided into inlet space and outlet space via the arrangement of internal locating portion. It is possible to eliminate the space restrictions for the fixed ceramic disc, and also prevent the rotation and slide or displacement when the fixed ceramic disc is assembled into the chamber space of the spool seat.

Abstract: A valve device includes: a valve housing defining a cylindrical space connected to a high-pressure source, and having a first communication hole open at a valve seat located at a bottom portion of the valve housing and providing fluid communication between the cylindrical space and a low-pressure source; a seal member arranged in the cylindrical space and providing or shutting off fluid communication between the high-pressure and low-pressure sources so that the seal member moves away from or contacts the valve seat; and a stem having an accommodating recess at one end of the stem and moved axially. The seal member is fitted and held in the accommodating recess. The seal member has a second communication hole that provides fluid communication between a bottom face of the accommodating recess and the low-pressure source when the seal member is in contact with the valve seat.