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Holy shit. Just tried this with my Spectra (*valve+membrane, not duckbill*) and the suction is stronger! : r/breastfeeding
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Spectra Synergy Gold Parts Kit - Backflow Protectors Valves and Tubing for Synergy Gold breast pumps!
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Amazon.com : Spectra - Duckbill Valve Replacement for Breast Milk Pump (Pack of 2) - Fits Small, Medium, Large, or X-Large Breast Shields and Flanges : Baby
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Maymom Duckbill Valves Compatible with Spectra S1 Spectra S2 Spectra 9 Plus Spectra Synergy Gold Not Original Spectra Pump Parts Spectra S2 Parts Replace Spectra Valve (Blue, 6ct) - Yahoo Shopping
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Amazon.com : Maymom 2nd Generation Pump Valves with Pull Tab for Spectra S1, S2 and 9 Pumps and Compatible with Avent Comfort Electric Breast Pump; (4 pc) : Baby
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Amazon.com : Nenesupply 5 pc Duckbill Valves Compatible with Spectra S1 Spectra S2 Breastpumps Not Original Spectra Pump Parts Replace Spectra Duckbill Valves and Spectra Valves : Baby
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