| 摘要 |
<p>A fluid flow restrictor assembly comprising a restrictor valve (1,8) and a flexible tube (21) housed in said valve (1,8), and an internally located outwardly biasing spring (22) positioned in the tube (21) such that the tube (21) is biased against the action of the valve (1,8), the assembly being adapted to reduce the diameter of the tube (21) with minimal permanent deformation of the tube (21).</p> |
