| 摘要 |
<p>The invention concerns a control valve (1) with an insert (9), for example a venturi (37), and a fine adjustment mechanism ensuring that the flow through the valve (1) can be measured exactly and controlled precisely. The fine adjustment mechanism comprises a regulating member (24) which is provided adjustably displaceable in a passage (25) in a ball body (6), where displacement of the regulating member (24) results in reduction of the cross-section of the through-going duct (7) in the ball body (6).</p> |
