Maymom Pump Parts Compatible with Spectra S2 S1, 22mm Flange Valve, Backflow Protection, Non Genuine Replacement Parts, Duckbill Valve Bottle

SIZE NOTICE: The included 22mm flanges are not suitable for all mothers; please refer to the size chart before purchase; Suitable for nipple diameter 20-21mm (measured after pumping); Package includes 2 flanges (22mm), 2 Duckbill valves, 2 backflow protectors, 2 tubes and 2 bottles with one piece travel lid ; compatible with S11 S2 and 9 Plus; no suction cups or dome caps included All pump parts are manufactured by Maymom - non original accessories for S1, S2 or other pumps Compatible and interchangeable with pump parts; Suction power comparable to OEM; Suitable for replacement for flanges, duckbill valves, backflow protectors, hoses and wide neck bottles; flange sizes from 22 to 32 mm available One-piece bottle lid with integrated seal for secure closure without leaks; suitable for travel and storage of breast milk or infant formula; can also be used as a snack container or cup US FDA listed medical device (D192499) and approvals in Canada and Australia; Conforms to FDA and EU regulations for food contact materials; BPA free; can be cleaned with steam, boiling water or microwave steam bags; retail packaging, sealed by Maymom