Momcozy Mobile Flow M9 Valve (Pack of 2)Indication: The Momcozy Valve for M9 is designed to replace the valve in the Momcozy M9 breast pump. The valve is a crucial part of the milk expression process, as it controls the flow of milk and ensures a proper seal during pumping. If the valve becomes damaged or worn, it can cause suction loss or milk leakage. Replacing the valve ensures optimal performance and a more comfortable pumping experience. How to use: Valves can wear out over time,