Designed as a direct replacement for the Momcozy M5 breast pump, this set of four duckbill valves ensures the continued reliable performance of the pumping system. Each valve is crafted from food-grade silicone, a material chosen for its flexibility and durability. The duckbill shape functions as a one-way membrane, opening to allow milk to flow into the collection bottle and closing tightly to prevent backflow.

Over time, regular use can cause the original valves to lose elasticity, leading to reduced suction efficiency. Replacing them with these original accessories restores optimal vacuum pressure and maintains consistent milk expression. The silicone construction is soft yet resilient, providing a secure seal against the pump flange without deformation.

These valves are simple to install—no tools are required—and their transparent design allows for easy visual inspection of wear. As a maintenance part, they play a critical role in preserving hygiene by preventing moisture and milk residue from remaining in the pump mechanism. The set of four offers a practical supply, allowing for periodic rotation or replacement of multiple pump kits simultaneously.

While the valves are inherently durable, their performance depends on proper care: rinsing after each use and periodic sterilization according to the pump manufacturer’s guidelines. Compared to generic alternatives, these original parts are engineered to the exact specifications of the Momcozy M5, ensuring compatibility and reliable function. The affordable pricing makes regular replacement economically feasible, contributing to the long-term efficiency of the pumping setup.

Whether used for daily pumping or occasional sessions, these duckbill valves are an essential component for maintaining the pump’s intended performance. Their straightforward design and reliable materials make them a dependable choice for mothers seeking to sustain the functionality of their Momcozy M5 breast pump without unnecessary complexity.