| 摘要 |
A hand pump which is threadably mounted on the throat of a liquid container with the throat having a throat plug assembly mounted therein. The pump includes a lower housing having an upper housing movably embracing the lower housing. The upper housing is selectively movable between a normal extended position to a compressed position relative to the lower housing. When the upper housing is moved from its extended position to its compressed position, a piston and piston rod assembly pumps liquid from the lower housing outwardly from the upper housing. |
