| 摘要 |
The present invention relates to an adapter valve including: a body having an inlet, an outlet, and a through hole formed on one side of the gap between the inlet and the outlet; a handle inserted into the through hole to be rotated; a shaft inserted between the handle and the inlet at the inside of the body in such a manner as to move toward the inlet by means of the rotation of the handle; and a packing inserted between the shaft and the inlet in such a manner as to close the inlet by means of the movement of the shaft, wherein the packing can close the inlet more rigidly when a backward flow pressure is generated from the outlet, thus reliably preventing the backward flow and the leakage caused by the backward flow. |
