★ 4.2
momcozy Replacement Parts Review: 12-Pack S9 Pro & S12 Pro Duckbill Valves & Diaphragms Tested
After four weeks of daily use with my momcozy S9 Pro, these TOVVILD replacement diaphragms and duckbill valves held up better than I expected for a third-party set. Here's what I found during extended testing — the good, the concerning, and who should stick with OEM parts instead.
haunh4 min read