| 摘要 |
<p>A valve for automatically modulating a flow of fluid includes a flexible flow adjustment member (16) having a variable diameter passage (37) therethrough and an outer surface (16a). A shell (19) surrounds at least a portion of the outer surface creating a void (17) between the shell and the outer surface. The shell is in contact with the flow of fluid. The valve includes a thermally reactive material (18) within the void that expands when heated to exert pressure on the flexible flow adjustment member to cause the variable diameter passage to close and contracts when cooled to cause the passage to open.</p> |
