| 摘要 |
<p>A shear valve for use in a fuel delivery system which comprises a valve body wherein a first end (3) is adapted to be connected to a fuel inlet and a second oppositely disposed end (2) is adapted to be connected to a fuel outlet, said first end including an emergency shut-off valve (5) which is biased (6) towards its closed position, and the valve body having a readily frangible or separable region (4) between said ends and said emergency shut- off valve being normally held open by a displaceable abutment comprising at least one ball (X, Y, Z) or roller.</p> |
