12 Pack S9 Pro / S12 Pro / S9 / S12 Duckbill Valve Silicone Diaphragm, Compatible with momcozy Breastpump, Electric Breast Pump Replacement Parts Accessories
$11.69
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Price: $11.69
(as of Nov 14, 2025 18:32:56 UTC – Details)
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S9/S12/S9 Pro/S12 Pro Pump Parts Replacement – 6 pieces set diaphragms & duckbill valves are suitable for use with momcozy S9/S12/S9 Pro/S12 Pro breast pumps, for TSRETE electric breast pump
BPA-free, made of food grade silicone,safe,soft and odorless. The pump parts are perfectly meet your requirement when using a wearable breast pump
Easy washing, you can wash pump parts after each use with warm soapy water and rinse well. Can be washed with steam,boiling water or microwave steam bag
The diaphragm is used to help the breast pump maintain the seal to avoid milk leakage. The duckbill valve can be used to drain milk to the bottom of the container
The breast pump parts can be replaced every 2-3 months or so according to the installation and suction status of the breast pump
13 reviews for 12 Pack S9 Pro / S12 Pro / S9 / S12 Duckbill Valve Silicone Diaphragm, Compatible with momcozy Breastpump, Electric Breast Pump Replacement Parts Accessories
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$11.69
Karie Y –
Good Quality
Extra flange inserts are always a good idea while on a breast feeding journey! These came quickly and are holding up well to multiple pumps a day. I use them in my Spectra wall pump & my MomCozy wearable pumps
Grace Traylor –
Life savers for breastfeeding journey
Life savers for my breastfeeding journey. Before figuring out I needed these, my pump experience was painful and dreaded everytime. Now there isn’t any pain at all
Zach –
Fit great, easy insert
These came fast and well packaged. They are easy to input into my flangs, easy to clean. Fit into my madela portable flang. Didnt smell of chemicals upon opening as well!
Shelley Marie –
Worked with the momcozy s12
Pretty solid product fit my mom cozy s12
Ranyelys Aurelina Valenzuela Ramírez –
Repuestos de extractores
Muy buena calidad en verdad
Britty –
Don’t fit in my 24mm flanges
I needed a size 18mm insert for my wearables that are 24mm. These are horrible and do not fit. They don’t go all the way in as they are too big. I’ve used them a few times and pushed them in as much as I could. But this last time I pumped the pain was too unbearable. I got blisters and cuts from where the insert doesn’t meet the flange and rest flat. Im not sure if you can see it in the picture or not. I wish I hadn’t wasted my money on these and could return. Maybe I missed info where they are suited for larger flanges. Maybe they would go well in a larger size (however it doesn’t seem they are big enough for that). They also are a little stiff and not as pliable as others I’ve bought.
Mariah K –
Not perfect, but worth the buy
Bought for momcozy S12. Suction is good! Like some other reviewers said, though, the duck bills do come off occasionally if you store them in the fridge. I just keep extra clean ones on hand to switch out when that happens. They stick great once you wash and sterilize them. Still so much better than buying name brand replacements.
Grimaldo House –
Breastfeeding momma
Best dupe for momcozzy pumps! 10/10 recommend.
Lalatinaenalemania –
Sie haben mir sehr geholfen, das macht einen großen Unterschied.
Naui –
Exactly what I needed for my Spectra pump shields. Easy to use, soft. Increased comfort and milk collected.
Patricia G. –
Ich bin wirklich begeistert von diesem Flansch! Er passt perfekt auf meine Milchpumpe und sitzt angenehm auf der Brust – nichts drückt oder reibt. Das Material fühlt sich weich und hautfreundlich an, und die Reinigung geht super einfach.Ich hatte vorher Probleme mit der Passform, aber seit ich diesen Flansch benutze, pumpe ich deutlich entspannter und bekomme sogar etwas mehr Milch heraus. 🍼💗Auch nach regelmäßigem Gebrauch sieht alles noch aus wie neu. Eine klare Empfehlung für alle Mamas, die Wert auf Komfort und gute Qualität legen!
Akram –
Wonderful product , solved a huge problem, highly recommend it.
Valentina –
Exactly as described, only contra is the price, kinda expensive for 4 little pieces of plastic