| 摘要 |
A manually actuated liquid pump sprayer, capable of being operated in both an upright position and in an inverted position, includes an adapter attached to it s pump body to effect the upright and inverted spray, the adapter having first and seco nd fluid passages extending from an adapter chamber in opposite directions for respective ly inletting liquid from the container to the chamber in one of the upright and inv erted positions, and being exposed to air in the container in the other such positions , the passages terminating within the chamber in opposing upright and inverted valve s eats which are valved controlled by a single gravity shifting ball check valve.
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