Skip to main content

Willow Go® Pump Diaphragm Set (2-pack)

Regular price $16.99 $13.59
Unit price
Made of food-grade silicone, our diaphragm creates suction and prevents milk backflow into the pump.
4.1 (31)

Insurance & HSA/FSA

FSA/HSA reimbursements eligible

2 ways to pays with

Learn more about payment options

Free Shipping on orders over $69

US-Based Customer Care

Replacing Your Parts

For optimal output, replace every 90 days (or when you notice discomfort or signs of wear).

Total 5 star reviews: 19 Total 4 star reviews: 4 Total 3 star reviews: 3 Total 2 star reviews: 3 Total 1 star reviews: 2
Rated 4.1 out of 5 stars
Based on 31 reviews
Customer-uploaded media carousel. Press left and right arrows to navigate. Press space or enter to open more details.
Slide 1 selected
31 reviews
  • Erika O.
    Verified Buyer
    Rated 3 out of 5 stars
    1 month ago
    Not efficient

    If this isn’t placed exactly right before putting together then the suction isn’t strong (or it’s non-existent) and you have to take a part to re do.

    WP Profile picture for Willow Pump
    Willow Pump
    1 month ago

    Hi, Erika! We are so sorry to read that you are experiencing issues with your Go Diaphragms. We have some helpful tips in our Help Site, be sure to check them out!

    If you continue to experience any issues, please feel free to reach out to us directly at 1-888-WILLOW-3. Our Customer Care team is here to help!

  • Erin G.
    Verified Buyer
    I recommend this product
    Rated 4 out of 5 stars
    1 month ago
    Sufficiently good

    The only reason I’m giving 4 instead of 5 stars is that, as a woman that pumps 4 times a day with the Willow Go, I’ve noticed inconsistencies in the fit of the various diaphragms valves I’ve had over my 9 months of pumping. Some have a great tight fit, others are looser and cause me to need to increase the suction strength. All in all they work… but it’d be wonderful if there was more consistency when needing to swap out old pump parts for new. Some of my older (1 month used) have a better fit than brand new parts. It’s a tad bit frustrating.

  • Kayla S.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Excellent Option!

    Please do yourself a favor and replace these every 3/4 months so that your pumps keep working as they should!

  • Kiana D.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago

    They’re good. Also need replaced about every month

  • Amanda L.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    4 months ago
    Great suction

    I got these as replacement parts and the customer service and speed of delivery was amazing. Thanks to the Willow team!

Reviews LoadedReviews Added

Frequently Asked Questions