| 摘要 |
The invention relates to a rotary valve (10) for a fluid flowing in a pipe (11), comprising a body (12) provided with an upstream segment (12a) and a downstream segment (12b) located on either side of a central recess (14) constituting a seat into which a rotary sealing element (15) comprising a through-channel (16) is inserted. The invention comprises a decompression insert (20) arranged in said upstream segment (12a) and provided with a first cylindrical section (21) having an outer cross-section equal to the cross-section of said upstream segment (12a), a second cylindrical section (22) having a cross-section that is narrower than said first cylindrical section (21), and a third section (23), referred to as frusto-conical connection section, for connecting said first and second sections (21, 22). Said decompression insert (20) comprises a plurality of radial openings (24) provided in at least one of the walls of said second and/or said third sections (22, 23) in order to diffuse the fluid toward said through-channel (16) of the sealing element (15) during a partial opening phase of said rotary valve (10). |
