| 摘要 |
A valve which includes a housing (12) in which is formed a chamber (14), first (18) and second (22) inlets to the chamber, an outlet (16) from the chamber, a closure member (24) within the chamber, and biasing means (30), the closure member including a fluid flow passage for fluid which flows through the chamber from the second inlet to the outlet, and being movable against the action of the biasing means to close the first inlet. |
