| 摘要 |
<p>A valve (1) for fluids, comprising a tubular body (2) having at least one inlet (4) and at least one outlet (5) and defining a conduit (3) for the passage of a fluid, Said valve comprises a hollow elastic element (6) housed in the tubular body (2) inside said passage conduit (3) , said hollow elastic element (6) having at least one opening (6a) to allow the entry of a driving fluid able to set a determined pressure, so-called driving pressure, inside the elastic element (6) , in order to change its volume between a minimum value and a maximum value corresponding respectively to an operative condition of minimum obstruction of a fluid passage section within said conduit (3) and an operative condition of maximum obstruction of said passage section.</p> |
