Search  for anything...
NENESUPPLY

Nenesupply 21mm Flange and Duckbil Valves Compatible with Spectra S1 Spectra S2 Breastpump Replacement to Spectra Pump Parts and Spectra Flange Replace Spectra Duckbill Valves and Spectra 21mm

  • Based on 3,170 reviews
Condition: New
Checking for the best price...
$17.99 Why this price?
Save $12.00 was $29.99

Buy Now, Pay Later

As low as $4 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

90-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Sep 5
Order within 16 hours and 51 minutes
Available payment plans shown during checkout

Recently Viewed

Flavor Name: Flange 21mm + Valves


Features

  • CONTENTS: 2 Small 21mm FLANGES and 2 DUCKBILL VALVES for Spectra S1, Spectra S2 and 9 Plus breastpumps.
  • ALL PARTS MADE BY NENESUPPLY. Not Original Spectra S2 Accessories. Not original Spectra Pump Parts. Replace Spectra S2 Flanges and Spectra Duckbill Valves.
  • COMPATIBLE and INTERCHANGEABLE WITH SPECTRA PUMP PARTS. Same suction power as OEM parts and Spectra S1 accessories.
  • DUCKBILL VALVES EASY TO INSTALL AND REMOVE. DIFFERENT FLANGE SIZES AVAILABLE: 19mm, 21mm, 24mm, 27mm, 30mm.
  • MATERIALS DO NOT CONTAIN ANY BPA. Can be sanitized with water steam, boiling water or microwave-steam bags. Tested by independent labs for safety.

Brand: NENESUPPLY


Special Feature: Flanges and Valves for Spectra S1 S2 9 Plus Synergy Gold


Included Components: Flange, Valve


Material Type Free: DEHP Free, BPA Free


Number of Items: 1


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 3.94 x 5.91 x 4.33 inches; 0.63 ounces


Manufacturer recommended age ‏ : ‎ 12 years and up


Item model number ‏ : ‎ Flange 21mm + Valves


Date First Available ‏ : ‎ June 22, 2016


Manufacturer ‏ : ‎ NENESUPPLY


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Sep 5

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Size
Flavor Name: Flange 17mm (XXS)
These are perfect. I love that they come with sizing rulers. They aren’t too expensive and super helpful that they don’t have to come with the whole kit of extra bottles that I don’t need.
Reviewed in the United States on February 3, 2025 by Dana Luedeman
    • Great quality and good fit.
Flavor Name: Flange 30mm (XL)
If 28mm is too small and 32mm is too big for you, please buy this product. It also cheaper than many others and its quality compares to the original pump.
Reviewed in the United States on December 13, 2024 by Andres Morel
    • Works great with my Spectra
Flavor Name: Flange 21mm + Valves
The parts work great with my Spectra pump and are more affordable than replacements directly from Spectra. Have held up to daily use and washing and no problems with warping when sanitizing.
Reviewed in the United States on November 16, 2024 by #GirlMom
    • Perfect!
Flavor Name: Flange 15mm
Works perfectly and easy to clean. Able to use with Spectra bottles.
Reviewed in the United States on November 25, 2024 by Christina
    • Works with Spectra
Flavor Name: Flange 21mm + Valves
I was in need of a second set of flanges as I am exclusively pumping and didn’t want to constantly clean pump parts. I found these after a quick search and they’re perfect! I haven’t had any issues. They fit perfectly on my Spectra pump. The valves can be a little difficult to remove but a little twist at the base does the trick. Will purchase again when I’m in need of replacement parts! ... show more
Reviewed in the United States on June 24, 2024 by Alexis Caruso
    • Good quality
Flavor Name: Flange 19mm + Valves
Perfect size
Reviewed in the United States on March 4, 2025 by Adrianna Perez
    • Perfect 17mm fit.
Flavor Name: Flange 17mm (XXS)
Easy to attach to the spectra.
Reviewed in the United States on November 6, 2024 by javier soto
    • Works perfect with spectra pump!
Flavor Name: Flange 19mm (XS)
Got these as extras for my spectra s1! Works great!
Reviewed in the United States on October 23, 2024 by Amazon Customer

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...