Patent ID: 8408243

Claim:
A valve device comprising: a valve body composed primarily of aluminum and comprising a cylindrical valve insertion hole having a central axis; a lead-in passage forming an opening in the cylindrical surface of the valve insertion hole, whereby a fluid can flow from the lead-in passage into the valve insertion hole, wherein at least a portion of the lead-in passage adjacent the opening in the cylindrical surface of the valve insertion hole is oriented such that the direction of elongation of the lead-in passage at the opening is tilted with respect to a normal line to the inner surface of the valve insertion hole at a position of the opening of the lead-in passage, in a view in a direction of the central axis of the valve insertion hole; and a valve member provided in said valve insertion hole, that is selectably engageable with a valve seat and separable therefrom to selectively form a clearance, to thereby control flow of the fluid past the valve member, wherein the valve device is configured such that the fluid flowing from the valve insertion hole to the clearance is prevented from flowing circumferentially about the central axis.