摘要 |
<p>The present subject matter relates to a fluid control system (20, 20', 20'') installed in a flow path of a fluid. The fluid control system (20, 20', 20'') includes a first orifice (30) to provide a first pass-area to the fluid, a first closing element (32) to vary the first pass-area, a second orifice (34), configured in the first closing element (32), to provide a second pass-area to the fluid, a second closing element (36) to vary the second pass-area, and a single actuating shaft (42). The second orifice (34) is smaller than the first orifice (30). The first orifice (30) includes a first seat (38) for the first closing element (32) to rest and close the first orifice (30), and the second orifice (34) includes a second seat (40) for the second closing element (36) to rest and close the second orifice (34). The first pass-area and the second pass-area are varied by the first closing element (32) and the second closing element (36) through movements of the single actuating shaft (42).</p> |