Breast Pump Parts for Spectra S1/S2/9 Plus/Synergy Gold, Not Original Accessories, 21mm Set Spectra Replacements Pump Parts Include Flange/Duckbill Valve/Backflow Protector/Tubing/Bottles is up for auction in Baby Products. The current bid is $3.00, 80% below the $15.33 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.