--- product_id: 193836008 title: "21mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Replacment Pump Parts Not Original Spectra Flange Duckbill Valve" brand: "maymom" price: "145.96 DT" currency: TND in_stock: true category: "Maymom" url: https://www.desertcart.tn/products/193836008-21mm-flange-and-duckbill-valve-compatible-with-spectra-s1-s2 store_origin: TN region: Tunisia --- # 21mm precision flange size Compatible & interchangeable with Spectra S1, S2, S1Plus BPA/DEHP free, FDA compliant 21mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Replacment Pump Parts Not Original Spectra Flange Duckbill Valve **Brand:** maymom **Price:** 145.96 DT **Availability:** ✅ In Stock ## Summary > 🍼 Upgrade your pump game with Maymom’s precision parts—because your comfort deserves the best! ## Quick Answers - **What is this?** 21mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Replacment Pump Parts Not Original Spectra Flange Duckbill Valve by maymom - **How much does it cost?** 145.96 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/193836008-21mm-flange-and-duckbill-valve-compatible-with-spectra-s1-s2) ## Best For - maymom enthusiasts ## Why This Product - Trusted maymom brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safe & Certified:** BPA and DEHP free materials, independently lab-tested and FDA compliant for peace of mind during every pumping session. - • **Perfect Fit, Every Pump:** 21mm flange engineered for seamless compatibility with Spectra S1, S2, and S1Plus models, ensuring optimal suction and comfort. - • **Hygienic & Easy to Clean:** Manufacturer-sealed retail packaging with resistance to boiling, steam cleaning, and microwave sterilization for effortless maintenance. - • **Durability Meets Convenience:** Duckbill valves designed for easy plug-in and removal, crafted from premium silicone for long-lasting performance. - • **Versatile Bottle Compatibility:** Works flawlessly with Spectra wide-neck, Avant, and Maymom wide-mouth bottles—flexibility that fits your lifestyle. ## Overview Maymom’s 21mm flange and duckbill valve set offers a high-quality, BPA-free replacement compatible with Spectra S1, S2, and S1Plus breast pumps. Engineered for durability and ease of use, these parts deliver OEM-level suction performance and fit a variety of wide-neck bottles. Independently lab-tested and FDA compliant, they provide a safe, hygienic, and versatile pumping experience trusted by thousands of parents. ## Description desertcart.com : Maymom 21mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Replacment Pump Parts Not Original Spectra Flange Duckbill Valve : Baby ## Features - CONTENTS: 2ct Small 21mm flanges and 2ct duckbill valves compatible with Spectra S2, Spectra S1 and Spectra S1Plus breastpump. Made by Maymom. Not Original Spectra Flanges, Spectra Duckbill Valve. Can use Maymom flange for Spectra S2 pump parts or Maymom valve for Spectra valve replacement. Made by Maymom, not by original spectra company. Maymom is not affiliated with Uzinmedicare, the trademark owner of spectra. - COMPATIBLE AND INTERCHANGEABLE with Spectra pump parts. Maymom pump parts perform the same suction power as OEM parts, Spectra S2 pump parts, Spectra S1Plus accessories. - MAYMOM FLANGE can work with Spectra wide-neck bottle (wide-mouth bottle), Avant bottle, and Maymom widemouth bottle. Available Flange sizes:13mm, 15mm, 17mm, 19mm, 21mm, 24mm, 25mm, 27mm, 28mm, 29mm, 30mm, 32mm. - MAYMOM DUCKBILL VALVES features "easier to plug in and remove", "durable quality" and "color options" - BPA/DEHP FREE. FDA compliant for food contacts. Tested by independent lab. Test report online available for reference. Products in retail pack sealed by manufacturer. No problem with dishwasher top rack, water steam cleaning, boiling water or microwave-steam bags. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0863NBHRX | | ASIN | B0863NBHRX | | Additional Features | Closed System | | Best Sellers Rank | #240 in Baby ( See Top 100 in Baby ) #15 in Breastfeeding Supplies | | Brand Name | Maymom | | Color | White Valve | | Customer Reviews | 4.7 4.7 out of 5 stars (6,024) | | Date First Available | March 19, 2020 | | Included Components | Breast Flange, Valve | | Is the item dishwasher safe? | No | | Item Weight | 0.08 Kilograms | | Item model number | S012W-FxxDx2 | | Manufacturer | Maymom | | Manufacturer | Maymom | | Manufacturer Part Number | ca_S012W-FxxDx2 | | Manufacturer recommended age | 0 - 3 years | | Material Type | Plastic, Silicone | | Model Number | S012W-FxxDx2 | | Product Dimensions | 5.51 x 2.36 x 6.69 inches; 2.82 ounces | | Product Style | Flange 21mm + Valves | | Size | 21 mm Flanges | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Maymom - **Color:** White Valve - **Included Components:** Breast Flange, Valve - **Material:** Plastic, Silicone - **Special Feature:** Closed System ## Images ![21mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Replacment Pump Parts Not Original Spectra Flange Duckbill Valve - Image 1](https://m.media-amazon.com/images/I/81wbohX86oL.jpg) ## Available Options This product comes in different **Pattern, Color** options. ## Questions & Answers **Q: will this work with bellababy?** A: no. for bellabay, please buy from the following https://www.amazon.com/Maymom-Compatible-Bellababy-Double-Electric/dp/B09W2KRSC5/ref=sr_1_2?crid=23GCK9QCNBTGZ&keywords=maymom%2Bbellababy&qid=1676120494&sprefix=maymom%2Bbella%2Caps%2C298&sr=8-2&th=1 **Q: Did anyone have trouble and feel like these ran big?** A: Yes I definitely felt these ran big as compared to standard spectra. It doesn’t make sense but 19mm was too big when it was the right size in spectra **Q: I used mine before realizing it’s the wrong flange size, should I still return them?** A: I did the same thing. I just brought flange inserts that were my nipple size and just pushed it in for the correct sizing. But you can if you want. **Q: Does this flange work with the Kiinde system?** A: Yes if you have the Kiinde adapters ## Frequently Bought Together - Maymom 21mm Flange and Duckbill Valve Compatible with Spectra S1 Spectra S2 Spectra 9 Plus Not Original Spectra 20mm Replace Pump Parts Spectra Flange Spectra Duckbill Valve - Spectra - Wide Neck Baby Bottles - Compatible with Spectra Breast Milk Pump Flanges (Pack of 2) - Momcozy Hands Free Pumping Bra, Adjustable Breast-Pumps Holding and Nursing Bra, Pumping & Nursing Bra in One --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/193836008-21mm-flange-and-duckbill-valve-compatible-with-spectra-s1-s2](https://www.desertcart.tn/products/193836008-21mm-flange-and-duckbill-valve-compatible-with-spectra-s1-s2) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-12*