Is the suction on your wearable breast pump not what it used to be? The duckbill valve is often the first part to wear out. This 6-pack of food-grade silicone duckbill valves is a perfect, affordable replacement. They're designed to be compatible with the Momcozy M9 pump, fitting and functioning just like the originals to maintain strong suction and prevent milk backflow. They're also likely to fit many other similar pump models. Made from soft, durable, and odorless silicone that's easy to clean – just wash with warm soapy water or sterilize by boiling/steaming. Having spares on hand means you can always swap in a fresh valve for optimal performance. Essential maintenance for keeping your pump working effectively and hygienically.