The E-Rosy keeps its pull only as long as its membranes are healthy. This original pack pairs two duckbill valves with one air bag — the exact three pieces that fatigue with normal use — sized precisely for the E-Rosy system.
Duckbills are the fastest-wearing part of any pump, which is why this pack carries a pair: one to install today, one waiting in the drawer. Rotating them roughly every four to twelve weeks of regular pumping keeps suction from ever visibly sagging.
A valve that almost fits leaks a little air on every cycle, and a little air per cycle is the difference between a full and a half-empty bottle. These are original parts cut to E-Rosy tolerances — the fit is the feature.
Everything in the pack is 100% food-grade, BPA-free silicone rated for boiling and steam sterilization. Rinse promptly after each session and the silicone rewards you with its full working life.
If a part looks wrong or suction still lags after a swap, the Phanpy care team answers within a day. Membranes are cheap; a week of underperforming sessions is not.
A 20 mm tunnel for mothers the standard flange fits too loosely — the two-minute fix for pinch-free pumping.
