Patent ID: 8727307

Claim:
A valve comprising; a first duct; and a second duct lying at right angles to the first duct, wherein the first duct opens into a connecting portion of the second duct thereby defining an intersection that forms a seat for a valve disk that slides in the connecting portion in a direction at right angles to the seat between a closed position and an open position, wherein the connecting portion comprises two flat walls facing one another and connected by an end wall, wherein the first duct opens onto one of the two flat walls, wherein the end wall partially surrounds the valve disk parallel to a direction of sliding at a distance from an edge of the valve disk such that, for the open position, the end wall defines with the edge of the valve disk and the seat a passage, the cross section of which increases from a median axis of the end wall toward regions where the end wall meets the second duct, and wherein a narrow space is left between one of the two flat walls facing the seat and the valve disk in the open postion.