Maymom 21mm Replacement Flange & Duckbill Valve Set for Spectra S1 S2

★★★★★ 98.7% positive · 2,444 verified eBay reviews

$11.99

$4.99 flat-rate shipping · Free when your cart hits $49.99

New Condition · graded by hand

Original packaging, never used. Sealed or unboxed but unused.

$4.99 flat rate · Free over $49.99Ships fast from Monroe, Michigan
Inspected & graded before listingCondition described honestly — no surprises
Backed by 2,444 verified reviews98.7% positive · eBay Top-Rated Seller
30-day returnsNot as described? We make it right — see policy

Buyer protection

Checkout is Shopify's, not ours. PCI DSS Level 1 certified and encrypted end to end — your card number never touches a Warehouse11 server.
Your payment method still protects you. Pay by card or PayPal and their own dispute process applies to this order exactly as it would anywhere else.
30 days to change your mind. Not as described, or not what you expected? Send it back — see the policy.

Product details

This Maymom 21mm flange and duckbill valve set is a replacement pump parts kit compatible with Spectra S1, S2, and S1 Plus breast pumps. It restores full suction and airtight seal for reliable pumping sessions. New and unopened.

Key Features:
2 count 21mm small flanges and 2 count duckbill valves
Compatible and interchangeable with Spectra S1, S2, and S1 Plus pumps
Also fits Spectra wide-neck bottles, Avant bottles, and Maymom wide-mouth bottles
BPA and DEHP free, FDA compliant for food contact
Safe for dishwasher top rack, steam bags, and boiling water sterilizing
Sealed in original retail packaging from manufacturer

Technical Specifications:
Brand: Maymom
Model Number: S012W-FxxDx2
Included Components: Breast Flange, Valve
Size: 21mm Flange
Material: Plastic, Silicone
Color: White Valve

Ideal for moms who need spare or replacement parts to keep their Spectra pump running like new.