The flange kits uses Medela style valve/membrane for durability. You can still use your Ameda duckbill if you like. It also includes Maymom backflow protector to maintain a closed systemn2x Medela style flange (19) mm, 2x Vave/4x membrane, 2x backflow protector; Bottles not included, You can use the original Ameda bottles or any other standard sized bottles (Medela Bottle)nSingle piece design- no awkward, leaking insert type design. flange is more transparent than the Ameda polypropylene (PP) one so you can see better how your milk is expressed; This small size, 19 mm, only comes from Mayommn100% compatible with your Ameda pump. Satisfaction guaranteed.nBPA free. Complies with US FDA standard as class II medical device. Test report is online for your reference.nThese items are after market parts made by Maymom to replace your Ameda Flange and Ameda white valve/duckbill. It is well known that choosing the correct size of flange (breastshield) is important to achieve comfortable breastmilk pumping. While Ameda provide CustomFit flanges, some of the sizes are achieved using inserts, which are not easy to use, and tend to leak air easily.
Maymom's flange is one-piece design to achieve the size you want. Because it is one-piece, so no leaking air and easier to use.
For some models of flanges, Maymom also offer customers a choice of either duckbills or Medela type of yellow valve/membrane system for the system to work. Customers' experiences show that the duckbill system is easier to use while valve/membrane systems lasts longer. It is your choice!
Most importantly, Maymom stands behind the quality of her products. Customer service/satisfaction is her Job #1 after the sale. Buy Maymom's product with confidence.