21mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Replacment Pump Parts Not Original Spectra Flange Duckbill Valve

These replacement parts for my Spectra S2 were exactly what I needed! The set comes with clear instructions and images, which made swapping everything out super simple, even for someone like me who usually finds pump parts confusing. I especially appreciated the QR codes included; they linked directly to step-by-step instructions and even to individual replacement parts if I ever need to reorder just one piece. The parts themselves feel durable and well-made, and they fit my S2 perfectly without any issues. Everything works smoothly and has held up well after multiple uses and washes. It’s such a relief to have a compatible, high-quality option that makes pumping easier and less stressful. Highly recommend for any Spectra S2 user who wants reliable replacement parts without the guesswork!

This kit saved me! The duckbills work great with the manufacturer’s parts for my spectra pump. These pieces can be used interchangeably with the original pieces from my pump, there is no noticeable difference. I would recommend always having this set on hand, as it is easy for pump pieces to go missing. It is easy to clean and good quality, with stands the heat of steaming.

This flange and valve set was a total game changer during my breastfeeding journey. I loved having a wide range of different flange sizes to try—being able to find the right fit made such a huge difference in comfort and output. It really helped take the guesswork out of pumping. The standard flanges that come with most breast pumps simply don’t work for the average female, and this set finally addressed that gap. Better fit, less discomfort, and a much more positive experience overall. I truly wish I had found these sooner. Highly recommend to anyone pumping or breastfeeding!

These work well!

As a pumping only mama, and an overproducer, I have absolutely nothing negative to say about these. Compatible with my spectra gold and a great fit! Love that maymom has the in between sizes. Life saver if you do not want to use the silicone flange inserts.

The product was great in that all the parts were compatible with Spectra’s parts and they functioned properly, but the sizing chart in the images was a little hard to figure out and I bought the wrong size. And with pumping, it’s so important to get a good size. I would air on the side of going down rather than up if you’re in between. When I measure, I’m at a 15-16, so I looked at the chart and it said to go to 19mm which was slightly too big and cause led some pain. As far as other details go, the parts are easy to use, easy to clean, and store just like any other parts would. It was a little pricey in my opinion, but it’s still way cheaper than brand name parts. It’s just a shame that you have to kind of guess with sizes and try them all out in whatever range you’re in.

These worked great, just as well as the brand name. The awesome price point meant I could buy 3 pairs so I didn't have to wash while I was at work without a fridge. These lasted an average of 1-2 sessions a day (per set) for 8 months and I will be keeping in case I ever have another little one

These fit my Spectra pump perfectly.

Good quality flange, fits spectra perfectly but no valves despite clearly staying flanges + valves. Disappointing as now I'll have to order more.

Was good but not sure how to test different size

Good

Compatible et de qualité

Product works great. Using it on a Spectra S2 machine