[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: We have tested our duckbill valve to have the same suction power as the Spectra and Medela valves. Designed to replace the breast pump duckbill valve every 3-6 months. Fewer parts to clean: A Papablic duckbill valve replaces the Medela valve and Medela membrane. Save money and reduce pump parts to clean and assemble. Easy removal: This duckbill valve is specially designed with an easy-to-grip pull tab that allows you to easily remove and replace a Spectra or Medela valve. Material: Food grade silicone, BPA/DEHP free. Please Note: This is an aftermarket product manufactured by Papablic Inc. Papablic is not affiliated with or endorsed by Medela or Spectra.