| 摘要 |
<p>Fluid control apparatus and method of controlling fluid flow. The fluid control apparatus comprises an elongate tube (101) having a first flow opening (102) at an end of the tube (101) and at least one second flow opening (103) along the length of the tube (101), and a sleeve (104) arranged to slide along said tube (101) during fluid-flow conditions. A gap (105) is present between the tube (101) and the sleeve (104) to allow some fluid to pass through the gap (105) to displace the sleeve (104) from the tube (101) and to allow some flow even when in a fully closed condition. A sleeve positioning device is arranged to adjust the position of the sleeve (104) and thereby control the fluid-flow.</p> |
