| 摘要 |
A power sucker includes a sucker member having a bore formed in the upper portion and having a valve seat. A handle is secured to the upper portion of the sucker member. A tube has a lower piston slidably received in the bore of the sucker member, and biased to engage with the valve seat. A hand grip is secured to the upper portion of the tube for pulling and disengaging the piston away from the valve seat. The tube includes an orifice and one or more openings and one or more air passages for releasing air when the piston is disengaged from the valve seat.
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