S9/S12/S9pro/S12pro Duckbill Valve and Silicone Diaphragm, Compatible with NaNaLazy/TSRETE/momcozy, Wearable Breast Pump Replacement Parts Accessories (4 Piece Set)

These seem to be easier to clean than the mom cozy brand. They aren’t quite as taunt though. I sometimes have lower output but could be due to a number of things rather than these replacement parts. Definitely works for me as a cheaper alternative.

After the original duckbill valve tore, I found these replacements were half the price of the original parts so I decided to try them. You can tell the material is thicker and a little different than the original manufacturer's parts, but it does work as intended. They have outlasted the original part so far (by about a month) and have not started to show any wear. I would buy them again.

Worked perfectly for my momcozy pump. Make sure you confirm that the parts are compatible with the exact pump (thr first set i ordered didn't fit at all due to it being for a different pump)

I have purchased several valve/diaphragm replacement sets from other sellers for my Momcozy S12. I have never had any complaints. However, listen to the reviews on this brand. #1. The picture of the item depicts a clear, standard-looking valve set. However, the actual item is a cloudy, powdery-feeling silicone. #2. The silicone is of low-quality. It is a very soft silicone, with a diaphragm that barely fits on the motor housing hole. The result is poor seal and, therefore, poor suction. #3. The duckbill valves are also very soft silicone, and they arrived compressed in a box. After taking them out, I realized there was a space in one of the valves, which makes it useless for suction and vacuum. #4. This item is apparently "unavailable for return," which is ridiculous. I bought 2 other sets, and both of them from other sellers could be returned (I checked out of curiosity). I had to contact Amazon directly to request help with this item. Any seller that does not provide return policies is an automatic red flag. I suggest running from this item, if you are trying to buy the valve/diaphragm set.

I used as replacement /extra s at of parts for my momcozy s12 pro. The fit nicely and never had any suction problems.

Works well but I feel the duck valves tend to slip off. They are shorter than my previous ones.

Omg so I got these to replace the original ones and I use to have to pump for a hour to get the output I always have. Got these and used them and with the normal half a hour I got my normal output!! So happy I only have to pump for half a hour instead of a hour

I have the Mon Lait wearable pumps and these parts work better than the ones that came with the pump. There is better suction, and they have a tighter fit. This means less milk gets past the backflow membrane, which makes it slippery and causes suction issues when using the standard parts.

Fonctionne bien avec mon Momcozy S12

I bought this for my mom cozy s12. Right out of the gate the material and shape of the valve felt different. I gave it a chance for over a week - the suction with these parts is not strong at all, and the pump was barely pulling milk. I went back to use my old used parts and it functioned much better. I know it’s more money but if ordering for your Momcozy pump, order the mom cozy replacement parts.

These do not fit my Momcozy S12 Pro pump as stated in the listing. The duckbills are too long for the pump.

Salut, je suis très déçu car selon la description le petit bec serait compatible avec mon appareil Momcozy s12pro. Il n'y a aucune compatibilité l'appareil ne fonctionne pas car le bec est trop long. Donc appuie sur le contour et n'est pas étanche. Voir la photo à droite le bec venu avec l'appareil initial.

Does not fit momcozy s9pro like it says!