--- 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: "R646" currency: ZAR in_stock: true category: "Maymom" url: https://www.desertcart.co.za/products/193836008-21mm-flange-and-duckbill-valve-compatible-with-spectra-s1-s2 store_origin: ZA region: South Africa --- # 21mm precision flange size Compatible with Spectra S1, S2, S1Plus BPA/DEHP free & dishwasher safe 21mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Replacment Pump Parts Not Original Spectra Flange Duckbill Valve **Brand:** maymom **Price:** R646 **Availability:** ✅ In Stock ## Summary > 🍼 Upgrade your pump game with Maymom precision & safety! ## 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?** R646 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/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:** FDA-compliant, BPA/DEHP-free materials tested by independent labs for your baby’s health and your peace of mind. - • **Trusted by Thousands:** Over 6,000 glowing reviews with a 4.6-star rating—join the community of savvy moms upgrading their pump parts. - • **Effortless Maintenance:** Durable duckbill valves designed for easy plug-in and removal, plus dishwasher and steam-safe cleaning. - • **Perfect Fit, Every Time:** 21mm flange engineered for seamless compatibility with Spectra S1, S2, and S1Plus pumps. - • **Universal 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, FDA-compliant replacement compatible with Spectra S1, S2, and S1Plus breast pumps. Designed for durability and ease of use, these parts ensure optimal suction performance and fit with popular wide-neck bottles. Trusted by thousands of moms, this BPA/DEHP-free set is dishwasher safe and independently lab-tested for safety. ## 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 | #228 in Baby ( See Top 100 in Baby ) #17 in Breastfeeding Supplies | | Brand Name | Maymom | | Color | Standard | | Customer Reviews | 4.6 4.6 out of 5 stars (6,143) | | Date First Available | March 19, 2020 | | Included Components | Breast Flange, Valve | | Item Weight | 0.08 kg | | 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 Count | ## Product Details - **Brand:** Maymom - **Color:** Standard - **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.co.za/products/193836008-21mm-flange-and-duckbill-valve-compatible-with-spectra-s1-s2](https://www.desertcart.co.za/products/193836008-21mm-flange-and-duckbill-valve-compatible-with-spectra-s1-s2) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-09-18*