These valves fit my pump perfectly and the one-piece design means no tiny parts to lose while washing. Suction feels stronger than the old ones and I'm not seeing any milk back up into the tubing anymore.
Daniel★★★★★
My output noticeably improved after swapping these in, probably because the seal is tighter and I'm not losing suction anymore. The backflow prevention is the real win though, no more milk creeping up into the tubing.
Nicholas H.★★★★★
The one-piece design makes cleanup way less fiddly than the separate parts I used before, and I’ve noticed the suction feels stronger right from the start of each session. Milk output has been noticeably steadier too, which takes one worry off my plate during those early morning pumps.