--- product_id: 450964910 title: "17mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Not Original Spectra S2 Replacement Pump Parts Flange Duckbill Valve" brand: "maymom" price: "$44.80" currency: USD in_stock: true reviews_count: 13 category: "Maymom" url: https://www.desertcart.us/products/450964910-17mm-flange-and-duckbill-valve-compatible-with-spectra-s1-s2 store_origin: US region: United States of America --- # compatible & interchangeable 17mm precision fit dishwasher safe durability 17mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Not Original Spectra S2 Replacement Pump Parts Flange Duckbill Valve **Brand:** maymom **Price:** $44.80 **Availability:** ✅ In Stock ## Summary > 🍼 Upgrade your pump game with Maymom’s precision parts—because every drop counts! ## Quick Answers - **What is this?** 17mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Not Original Spectra S2 Replacement Pump Parts Flange Duckbill Valve by maymom - **How much does it cost?** $44.80 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/450964910-17mm-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 & Hygienic:** BPA/DEHP free, FDA compliant, and dishwasher safe for worry-free daily use. - • **Perfect 17mm Fit:** Seamlessly compatible with Spectra S1, S2 & 9 Plus pumps for hassle-free replacement. - • **Wide Compatibility:** Works flawlessly with Spectra wide-neck, Avent, and Maymom bottles—flexibility meets convenience. - • **Trusted by Thousands:** 4.6-star rating from nearly 6,000 moms who swear by Maymom’s reliable pump parts. - • **Durable Duckbill Valves:** Easier plug-in/removal with long-lasting silicone for uninterrupted pumping sessions. ## Overview Maymom’s 17mm flange and duckbill valve set offers a premium, compatible replacement for Spectra S1, S2, and 9 Plus breast pumps. Crafted from durable, FDA-compliant materials, these dishwasher-safe parts ensure hygienic, efficient pumping. Trusted by thousands of moms, they deliver OEM-level suction performance with added ease of use and broad bottle compatibility. ## Description Maymom One-piece Flange Visit the Store Maymom One-piece Flange Visit the Store Maymom Detachable Shield Visit the Store Maymom Detachable Shield Maymom Base Connector Visit the Store Maymom Base Connector Maymom Flange Insert Visit the Store Maymom Flange Insert Maymom Duckbill Valve Visit the Store Maymom Duckbill Valve Maymom Storage/Feeding Bottle Visit the Store Maymom Storage/Feeding Bottle Maymom Bottle Caps Visit the Store Maymom Bottle Caps Maymom Storage Bag Adapter Visit the Store Maymom Storage Bag Adapter Maymom Bottle Converter Visit the Store Maymom Bottle Converter Maymom Tubing Visit the Store Maymom Tubing Backflow Protector & Diaphragm Visit the Store Backflow Protector & Diaphragm Other Products Visit the Store Other Products Maymom cares for each mom Maymom always cares about mothers' needs on the path of breastfeeding. For years, we hear mothers' voice for customized, comfortable and easy-to-use tools. Maymom makes a wide range of aftermarket pump parts including flange, tubing, duckbill valve, backflow protector, collection bottle, milk storage bag adapter, and various kinds of adapters to bridge different systems of name brand breastpumps. Maymom cares for each mom Maymom always cares about mothers' needs on the path of breastfeeding. For years, we hear mothers' voice for customized, comfortable and easy-to-use tools. Maymom makes a wide range of aftermarket pump parts including flange, tubing, duckbill valve, backflow protector, collection bottle, milk storage bag adapter, and various kinds of adapters to bridge different systems of name brand breastpumps. Review: Best replacement parts for my Spectra S2 - These replacement parts for my Spectra S2 were exactly what I needed! The set comes with clear instructions and images, which made swapping everything out super simple, even for someone like me who usually finds pump parts confusing. I especially appreciated the QR codes included; they linked directly to step-by-step instructions and even to individual replacement parts if I ever need to reorder just one piece. The parts themselves feel durable and well-made, and they fit my S2 perfectly without any issues. Everything works smoothly and has held up well after multiple uses and washes. It’s such a relief to have a compatible, high-quality option that makes pumping easier and less stressful. Highly recommend for any Spectra S2 user who wants reliable replacement parts without the guesswork! Review: Works great! - Super happy. Fit well. Wash and wear well. Function as they should. No complaints. ## Features - CONTENTS: 2x extra small 17mm flanges and 2x duckbill valves Compatible with Spectra S2, Spectra S1 and Spectra 9 Plus breastpump. Made by Maymom. Not Original Spectra Flanges, Spectra Duckbill Valve. Not for every mother. Talk to your lactation consultant before purchasing. - 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 DUCKBILL VALVES features "easier to plug in and remove", "durable quality" and "color options" - MAYMOM FLANGE can work with Spectra wide-neck bottle (wide-mouth bottle), Compatible with Avent bottle, and Maymom widemouth bottle. Available Flange sizes:13mm, 15mm, 17mm, 19mm, 21mm, 24mm, 25mm, 27mm, 28mm, 29mm, 30mm, 32mm. - 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 | B0B4RC1HF3 | | Additional Features | Closed System | | Brand | Maymom | | Brand Name | Maymom | | Color | White Valve | | Customer Reviews | 4.6 out of 5 stars 5,992 Reviews | | Included Components | Bottle, Breast Flange, Valve | | Is the item dishwasher safe? | Yes | | Item Weight | 0.08 Kilograms | | Manufacturer | Maymom | | Manufacturer Part Number | S012W-FxxDx2 | | Material | Plastic, Silicone | | Material Type | Plastic, Silicone | | Model Name | spectra | | Model Number | S012W-F17Dx2.pc | | Size | 17 mm Flanges | | Special Feature | Closed System | | Unit Count | 2.0 Count | ## Product Details - **Brand:** Maymom - **Included Components:** Bottle, Breast Flange, Valve - **Material:** Plastic, Silicone - **Model Name:** spectra - **Special Feature:** Closed System ## Images ![17mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Not Original Spectra S2 Replacement Pump Parts Flange Duckbill Valve - Image 1](https://m.media-amazon.com/images/I/51wssK753cL.jpg) ## Available Options This product comes in different **Pattern, Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Best replacement parts for my Spectra S2 *by C***R on August 29, 2025* These replacement parts for my Spectra S2 were exactly what I needed! The set comes with clear instructions and images, which made swapping everything out super simple, even for someone like me who usually finds pump parts confusing. I especially appreciated the QR codes included; they linked directly to step-by-step instructions and even to individual replacement parts if I ever need to reorder just one piece. The parts themselves feel durable and well-made, and they fit my S2 perfectly without any issues. Everything works smoothly and has held up well after multiple uses and washes. It’s such a relief to have a compatible, high-quality option that makes pumping easier and less stressful. Highly recommend for any Spectra S2 user who wants reliable replacement parts without the guesswork! ### ⭐⭐⭐⭐⭐ Works great! *by H***N on March 17, 2026* Super happy. Fit well. Wash and wear well. Function as they should. No complaints. ### ⭐⭐⭐⭐⭐ Game Changer! *by D***O on May 20, 2026* Had a struggling supply and learned that wrong flange size can make pumping be uncomfortable with poor output. Decided to size up and perfect fit. Worked great with my spectra and my supply improved significantly. Wouldn't say it was only because of the flange upgrade but definitely a step in the right direction. Went from 1 ounce sessions to maxed out bottles. ## Frequently Bought Together - Maymom 17mm Flange and Duckbill Valve Compatible with Spectra S1 Spectra S2 Spectra 9 Plus Not Original Spectra Pump Parts Replace Spectra S2 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.us/products/450964910-17mm-flange-and-duckbill-valve-compatible-with-spectra-s1-s2](https://www.desertcart.us/products/450964910-17mm-flange-and-duckbill-valve-compatible-with-spectra-s1-s2) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-07*