Momcozy Duckbill Valves & Silicone Diaphragm Compatible with Momcozy S9/S12. Easy to Clean: Wash breast pump parts with warm soapy water after each use. BPA/DEHP Free. Quality and safety tested by an independent laboratory. Can be washed with. If you have any after-sales problems, please feel free to contact us, our customer service will solve it for you as soon as possible.