![Amazon.com : PumpMom Backflow Adapter for Spectra S1, Spectra S2 Pump to Use Most Medela Flanges and Bottles; Connects Between Medela Breastshield and Spectra Backflow Protector (Pumpmom Flange Adapter) : Baby Amazon.com : PumpMom Backflow Adapter for Spectra S1, Spectra S2 Pump to Use Most Medela Flanges and Bottles; Connects Between Medela Breastshield and Spectra Backflow Protector (Pumpmom Flange Adapter) : Baby](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/615MSrPnB5L.jpg)
Amazon.com : PumpMom Backflow Adapter for Spectra S1, Spectra S2 Pump to Use Most Medela Flanges and Bottles; Connects Between Medela Breastshield and Spectra Backflow Protector (Pumpmom Flange Adapter) : Baby
Legendairy Milk - If you'd like to use your Medela flanges and bottles with the Spectra pump, all you need is the little yellow adapter pictured below. I personally prefer the Medela
![Amazon.com : Nenesupply 5 pc Duckbill Valves Compatible with Medela and Spectra Pump Parts Use on Spectra S2 Spectra S1 and Pump in Style Harmony Symphony Replace Spectra Duckbill Valves and Medela Amazon.com : Nenesupply 5 pc Duckbill Valves Compatible with Medela and Spectra Pump Parts Use on Spectra S2 Spectra S1 and Pump in Style Harmony Symphony Replace Spectra Duckbill Valves and Medela](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/615tQsZBZeL.jpg)
Amazon.com : Nenesupply 5 pc Duckbill Valves Compatible with Medela and Spectra Pump Parts Use on Spectra S2 Spectra S1 and Pump in Style Harmony Symphony Replace Spectra Duckbill Valves and Medela
![Maymom Backflow Protector, Long Stem, Compatible with Spectra S1, S2 and 9 Pumps, Compatible with Medela Flanges and Medela Parts 2pc - Walmart.com Maymom Backflow Protector, Long Stem, Compatible with Spectra S1, S2 and 9 Pumps, Compatible with Medela Flanges and Medela Parts 2pc - Walmart.com](https://i5.walmartimages.com/asr/52f15179-2ce8-4861-b15c-7830cc76ee42.4bed96282c24557788d069a6f6e21ac9.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)