| 摘要 |
<p>A shutter for a rotary valve, comprising: a main body (2) having a conformation that is substantially spheroidal or suitable for rotating about an axis and equipped with a through cavity (3); at least one plate (4) equipped with a plurality of through openings (5) and arranged within the through cavity (3); the plate (4) comprises at least a first layer (41 ) and a second layer (42), each equipped with a plurality of through holes (41 a, 42a); at least some holes (41 a) in the first layer (41 ) at least partially face some holes (42a) in the second layer (42).</p> |
