Soft Silicone Wearable Pump Valve

Made from compliant food-grade silicone and polypropylene, these duckbill valves are sized to fit Gowing S18, S21, Discreet Duo, and S32 wearable breast pumps precisely. Each unit measures roughly 2.5 cm long (±1–3 cm tolerance), and the pack contains 8 identical replacements for scheduled maintenance. They incorporate a closed-system dual-channel configuration that prevents milk from migrating into air lines or motor compartments — protecting internal electronics and simplifying post-pump cleaning. The one-way flow system depends on both the duckbill’s hinge-like opening action and the responsive silicone diaphragm beneath it, working together to stop backward flow and contain milk securely within the collection path. Designed for frequent handling and steam sterilisation, the materials retain flexibility and shape fidelity over time — supporting daily use without hardening, cracking, or deformation.