[6-count] Papablic Duckbill Valves for Spectra and Medela, Replaceable Duckbill Valves for Spectra S1, Spectra S2, and Medela Pump In Style, BPA-Free Compatible Models: Replaceable duckbill valve for Medela and Spectra pumps. Compatible with Spectra S2, Spectra S1 breast pumps. Same suction power as the original: Tested to deliver the same suction performance as the original Spectra and Medela valves. Designed to replace the breast pump duckbill valve every 3-6 months. Fewer parts to clean: Each Papablic duckbill valve replaces both the Medela valve and membrane, reducing the number of components to clean and assemble. Easy removal: Specially designed with an easy-to-grip pull tab for simple removal and replacement. Material: Made from food-grade silicone, BPA and DEHP free. Note: This is an aftermarket product manufactured by Papablic Inc. Papablic is not affiliated with or endorsed by Medela or Spectra.