Spectra Replacement Duckbill valves are compatible with S2, S1, S9, M1, and DEW 350 pumps. Spectra Baby USA is a top leading breast pump company offering moms the latest innovative breast pumps and supplies. Spectra Baby USA is a team of lactation consultants and pumping mamas ...Spectra Replacement Duckbill valves are compatible with S2, S1, S9, M1, and DEW 350 pumps.
Spectra Baby USA is a top leading breast pump company offering moms the latest innovative breast pumps and supplies. Spectra Baby USA is a team of lactation consultants and pumping mamas that take this journey very seriously. They want to help provide moms all around the world access to a good quality pump to provide breast milk for their babies.