Regulating valve for regulating hydraulic flow rate of door closer for door, has regulating element with one sealing surface, which forms sealing seat with another sealing surface to block fluid path between valve inlet and valve outlet

摘要

The regulating valve (10) has an interior (26) with a sealing surface (28), in which a valve outlet (24) is opened. A regulating element (30) is rotatably arranged in the interior of a valve body (20) around rotation axis (R). The regulating element has another sealing surface (32), which forms a sealing seat with former sealing surface to block a fluid path (40) between a valve inlet (22) and valve outlet. A regulating hollow space is formed between the two sealing surfaces, and extends in the circumferential direction on a section of the sealing surfaces with a changing flow cross-section. An independent claim is included for a method for producing a regulating valve.