| 摘要 |
<p>A check valve for sealing a fluid supply while permitting selective withdrawal of fluid includes a tubular side wall (12) defining an insertion end (14) and a supply end (16). A diaphragm (18) is connected to the side wall and extends across the tube interior to close the interior. The diaphragm defines a slit (20) therein extending diametrically across the diaphragm. The diaphragm is defined as a concave surface toward the insertion end of the side wall. A housing (30, 32) secures the side wall, encloses the supply end thereof, and exposes the insertion end. A port (38) extends through the housing to communicate with the supply end.</p> |
