ENSURE BEST PERFORMANCE: Our valves are compatible with all Ameda breast pumps and HygieniKit Milk Collection Systems. To ensure the best performance of your Ameda breast pump, we recommend replacing valves every 8-12 weeks, depending on cleaning and use.LIKE NEW SUCTION: If you find your breast pump is losing suction, it may be time to replace the valves. Our replacement valves can help your pump maintain its like-new function and increase the suction performance of your Ameda breast pump or HygieniKit.SUPPORT FOR YOUR PUMPING: As part of our mission to empower you achieve your breastfeeding goals, we provide a wide suite of breast pumps, breast milk storage and nursing and pumping accessories to make your experience more comfortable, safe & convenient.THE FIRST NAME IN BREAST PUMPS. Each of our highest quality breast pumps are made with what we call The Ameda Difference. Our breast pumps have been used by top healthcare institutions and millions of mothers to provide the best nutrition for their babies.QUALITY BEYOND COMPARE: The Ameda Difference means we stand by our breastfeeding products. Compare Ameda's line of breastfeeding aids and pumps to products from Lansinoh, Baby Baby, bamboobies, elfinbaby, NatureBond, Milkies, Motherlove, Little Martin's.To be used with purely yours ultra dual breast pump.