鴨嘴閥門4入（僅適用於手動吸乳器）

The one-piece construction means no fiddly bits to lose in the sink, and the fit is snug enough that I never worry about leaks mid-pump. Replacing my old worn-out valves with these made a noticeable difference in suction right away.

The pull tab on these is a lifesaver—I can pop them off without wrestling with slippery silicone after every pump session. They fit snugly on my flanges with zero leaks, and the one-piece design makes cleaning a breeze. Definitely worth grabbing the 4-pack to have backups ready.