| 摘要 |
<p>A master cylinder comprises a pressure cylinder (1) having a closed end (2) and a piston (4) movable therein. A separate valve component (16) disposed within the cylinder adjacent the end (2) provides a passage (18) between a valve port (19) of the component and a space (21) of the cylinder and provides a valve seat for co-operation with a valve member (20) to control fluid flow past the port.</p> |
