10piece pack of 19mm backflow valves designed for manual breast pumps. Each valve acts as a reverse flow preventer to keep pump internals separate from expressed liquid, making maintenance easier and prolonging pump usability. Key benefits Prevents backflow into the pump body and tubing, helping protect pump components and reduce the need for deep cleaning. Ready supply of spare parts so you can worn valves quickly and avoid downtime. Simple installation and removal for fast maintenance at home or in a retail setting. Consistent fit for 19mm valve seats to maintain expected pump operation. What this product does Functions as a backflow protector and reverse flow preventer for compatible manual breast pumps. Helps maintain the separation between the milk collection area and pump mechanism by allowing oneway flow. Main attributes Pack size: 10 pieces. Size: designed for 19mm valve seats. Form: flexible, durable valve design for reliable sealing and repeated use. Performance: engineered to support oneway flow and stable suction behavior when fitted correctly. Maintenance: easy to clean by hand washing with warm soapy water and air drying before use. Compatibility Intended for manual breast pumps and accessories that accept 19mm backflow valves. Confirm valve seat diameter before to ensure proper fit. Typical use scenarios Home spare parts: keep a set on hand to worn valves and maintain pump function without delay. or use: use as replacement components during routine pump servicing or small equipment repairs. Travel or backup kit: carry extras when away from home to ensure uninterrupted operation. Installation and care Push into the 19mm valve seat until seated fully; if you notice wear or reduced sealing. Clean after each use according to pump manufacturer guidelines; hand wash and air dry before reassembly. Contents Ten 19mm backflow valves for manual breast pump applications.