Willow: Wearable Breast Pump – Willow Pump

Willow Sync Duckbill Valve Set (2-Pack)

Willow Sync Duckbill Valve Set (2-Pack) - Main image
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$8 $15.99 In stock

Category: Accessories

Replacing Your Parts

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

How long does breast milk last?

How to thaw & warm safely

How to store breast milk on-the-go

Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

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Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Eli I. ★★★★★

I was skeptical about needing replacements this often, but the seal on these duckbills feels genuinely tighter than my last set, and I noticed the pump pulling more consistently right away. The 90-day mark is easy to track since I just write the date on the bag with a marker and swap them out.

Ruby R. ★★★★★

These are the exact same shape as the originals that came with my pump, so the seal is perfect and no more leaks. I appreciate that the pack gives me a spare, and the 90-day replacement reminder is actually useful since I always forget.

Lily V. ★★★★★

I’ve been swapping these out every few months and the fit is just as snug as the originals—no leaks, no fuss. The 2-pack means I’m never caught without a spare when I need it most. Honestly, it’s a relief to find replacements that feel this consistent.

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