Valve for controlling fluid e.g. gaseous medium, has valve seat comprising two regions, where one region runs continuously in seat plate region of seat plate, and another region runs continuously in flow region in flow opening

摘要

The valve (1) has a movable valve unit (2) and a seat plate (3). A cylindrical flow opening (5) is formed in the seat plate, and a valve seat is formed around the flow opening. The valve seat protrudes against a surface of the seat plate. The valve seat comprises two regions (B, C) with corresponding radius, where the region (B) runs continuously in a seat plate region of the seat plate, and the region (C) runs continuously in a flow region in the flow opening.