NENESUPPLYSilicone Backflow Protector Membrane Compatible with Spectra Backflow Protector Use on Spectra S2 Spectra S1 Spectra 9 Plus Replacement Parts for Spectra Pump Parts and Spectra S2 Parts

Wife says her pump works better after replacing these valves. It's good 👍

I wanted to order genuine spectra parts and these worked great. Just unfortunate that the cost is insane when ordering from Canada. It makes it really expensive and I wish the pumps plus parts would be made available for purchase in Canada.

Replacing these helped me increase my supply - replace once a month!

Always work great! Every 3 months I buy replacement pieces from nenesupply AND recommend their products in my EP group! Great value for the cost!!!!

I didn't know I have to frequently change the accessories for brestpump and I struggled with low suction . when I came to know about and started looking for alternative options compared to expensive spectra I came across these . now I order them when ever I see a difference in suction. they will last a couple of months, though I still feel they are over priced for a small piece if rubber.

I am an exclusive pumper. I have been using the same parts for nearly 3 months when my supply dropped suddenly. I replaced the valves with some spares sitting around (from same company), and it didnt make much difference. Then I replaced these and my supply is even better than at my peak. I'll do an updated review on how long these last when they start to wear out again. I wish this company offered a 4 pack.

Excited for these! Glad to find just the backflow protectors, since I need to replace those often but don't want to waste the plastic of the 4 piece set spectra sells.

I was returning to work & needed to replace the diaphragms & duckbills. The amount I was pumping took a little dip - I'm a low producer, so any dip is a bad thing. Replaced with these diaphragms & they work great. Cost less than ordering from Spectra & Amazon Prime had them delivered quickly. I ordered 2 sets, but I know I'll be ordering more in the next month or so.

They work

The product was delivered incredibly dirty (I cleaned/sanitized them in the picture). The membranes fit so loosely to the backflow protector unlike the ones that came with my pump. The back of the backflow protector also kept popping off. The suction was very bad with these membranes and because of that i got less milk than usual. I will be returning them. I wanted to try them for that price but i will most definitely be sticking with maymom products from now on. Dont be cheap when it comes to pump parts. I do not understand all the good reviews.

Do not buy these. As you can see from the pictures it arrived in 2 ziploc bags just thrown into the package, nothing was sealed and the membranes were super dirty! The texture and size is different too so I doubt they will fit my pump (even though the description says they will). These are so sketchy and for $20 CAD!! I would buy the Spectra brand ones but we can’t get them in Canada. The ones by Maymom work well but I thought I’d try this brand and I’m shocked at how bad it is. See pictured attached.