eufy ダックビルバルブ（4個入り）搾乳器 S2 / S2 Pro 用

Finally, a set of valves that snap in securely without any guesswork—the anti-backflow design really does keep everything sealed and the suction strong through every session. I’ve washed them multiple times and they still fit perfectly, which is more than I can say for my last set.

It’s such a relief to have valves that actually click into place and hold the suction steady the whole session. I’ve used them every day for two weeks and haven’t had a single drop of milk back up into the motor. These just work.

The anti-backflow seal is a lifesaver—no more milk pooling in the tubing or losing suction mid-pump. These click in snug and hold their grip through every session, which makes cleaning and assembling feel way less fiddly. Definitely worth grabbing the 4-pack.