4Pcs Duckbill Valves Silicone Diaphragms Compatible with Lansinoh Discreet Duo, Eufy S1 Pro/S1/E10, Nuliie S32 Breast Pump Replacement Pump Parts Accessories

["Wide Compatibility: Perfectly fits Lansinoh Discreet Duo, eufy E10 S1 S1 Pro, NCVI, Nuliie, NICEGREEN, Zooawa S32 breast pumps, effectively preventing leaks and achieving optimal suction","Enhanced Pumping Efficiency: Dual-channel anti-backflow design prevents milk leakage, delivering strong, stable suction for faster milk flow and more output during each session","Ultra-Safe & Skin-Friendly: Made from food-grade silicone, BPA-free, odorless, and gentle on sensitive skin - bring a comfortable breastfeeding experience","Easy to Clean & Durable: Clean with warm soapy water after each use; weekly use boiling water/steam (≤100°C/212°F) ensures hygiene. Replace every 4-6 weeks for optimal function","Ideal for Breastfeeding Moms: Designed to last 1-3 months. Each pack includes 12 duckbill valves, so you can skip the constant hunt for replacements","Warm Note: Pre-shipment suction tested. Static gaps at the opening are normal and do not affect suction/milk expression. During operation, connection to the machine generates negative pressure, causing the duckbill valve to contract and form a complete seal"]