Drosseklappenstutzen

摘要

The invention relates to a butterfly valve body (1) having a butterfly valve housing (2) made of a plastic material. In a section of a line (3) of the butterfly valve housing (2) a butterfly valve (5) is mounted in a pivoting manner. According to the invention a metal cylinder (12) is provided for in said section of line (3) at least in a partial pivot range of the butterfly valve (5).