| 摘要 |
<p>A device for transferring fluids, either in liquid or gaseous form, from one space to another comprises two hollow cylindrical valve bodies, each provided with a radial nipple serving as inlet and outlet respectively, and releasably connected with each other in axial alignment and containing each an axially movable piston releasably connected with each other by a thread on one end of a rod which projects axially from one end of one of said hollow cylindrical valve bodies and has a handle on the outwardly projecting end for manually pushing the combined pistons, which are provided with channels, from one end position in which the channels connect said two nipples with each other to another end position in which said channels are out of communication with said nipples.</p> |
