𝐂𝐨𝐦𝐩𝐫𝐞𝐡𝐞𝐧𝐬𝐢𝐯𝐞 𝐂𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐢𝐥𝐢𝐭𝐲: Designed to work compatible with breast pumps including models S1, S2, and 9 Plus. Ensures optimal performance and reliable operation for all your pumping needs. 𝐂𝐨𝐦𝐩𝐥𝐞𝐭𝐞 𝐒𝐞𝐭 𝐨𝐟 𝐄𝐬𝐬𝐞𝐧𝐭𝐢𝐚𝐥 𝐏𝐚𝐫𝐭𝐬: Includes 6 duckbill valves, 2 backflow protectors, 2 silicone tubing, and 2 silicone membranes. This complete set ensures you have all necessary replacement parts at hand. 𝐏𝐫𝐞𝐦𝐢𝐮𝐦 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐚𝐧𝐝 𝐒𝐚𝐟𝐞𝐭𝐲: Made from BPA-free, food-grade silicone that complies with US FDA regulations. Safe for mom and baby, providing peace of mind during every pumping session. 𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 𝐄𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐲: Our pump parts maintain strong suction and prevent milk backflow,improving pumping efficiency and protecting the pump motor from potential damage. 𝐄𝐚𝐬𝐲 𝐭𝐨 𝐂𝐥𝐞𝐚𝐧 𝐚𝐧𝐝 𝐌𝐚𝐢𝐧𝐭𝐚𝐢𝐧: All components are easy to disassemble and clean with warm soapy water. For thorough sterilization, parts can be boiled at temperatures ≤100℃ (212℉) for 5-10 minutes. Upgrade your breast pump experience with FRUSSONIA's comprehensive replacement parts set. This essential kit includes 6 duckbill valves, 2 backflow protectors, 2 silicone tubing, and 2 silicone membranes, all designed to fit models S1, S2, and 9 Plus. Made from premium, BPA-free silicone, these parts ensure safe and efficient pumping. The duckbill valves and backflow protectors maintain strong suction and prevent milk backflow, enhancing pumping efficiency and protecting your pump. Easy to clean and assemble, these parts offer a cost-effective solution for busy moms. Enhance your pumping routine with FRUSSONIA's reliable and high-quality replacement parts.