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Amazon.com : Replacement Valve and Membrane Compatible with Medela Breastpumps (Swing, Lactina, Pump in Style), 4X Valves/6x Membranes, Part #87089; Repaces Medela Valve and Medela Membrane : Breast Feeding Supplies : Baby
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Amazon.com : Medela Spare Membranes, Breast Pump Replacement Parts, Made Without BPA, Authentic Medela Spart Parts, White,6 count(Pack of 1) : Baby
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Amazon.com : Maymom MyFit Breast Pump Kit Compatible with Medela Pump in Style Advanced Breast Pumps; 2X 29mm Breastshields (one-Piece), 4 Valve, 6 Membrane, & 2 Pump-in-Style Tubing; Can Replace Medela Valve :
Medela® Breast Pump Replacement Tubing for Freestyle Flex and Swing Maxi Breast Pumps | Bed Bath & Beyond
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