---
product_id: 415324824
title: "Maymom 21mm Flange and Duckbill Valve Compatible with Spectra S1, S2 and 9 Plus"
brand: "maymom"
price: "€ 81.76"
currency: EUR
in_stock: true
reviews_count: 6
category: "Maymom"
url: https://www.desertcart.hr/products/415324824-maymom-21mm-flange-and-duckbill-valve-compatible-with-spectra-s1
store_origin: HR
region: Croatia
---

# 21mm precision flange size Compatible with Spectra S1, S2 & 9 Plus BPA/DEHP free, FDA compliant Maymom 21mm Flange and Duckbill Valve Compatible with Spectra S1, S2 and 9 Plus

**Brand:** maymom
**Price:** € 81.76
**Availability:** ✅ In Stock

## Summary

> 🍼 Upgrade your pump game with Maymom’s precision parts — because your baby deserves the best!

## Quick Answers

- **What is this?** Maymom 21mm Flange and Duckbill Valve Compatible with Spectra S1, S2 and 9 Plus by maymom
- **How much does it cost?** € 81.76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/415324824-maymom-21mm-flange-and-duckbill-valve-compatible-with-spectra-s1)

## 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 & Sound:** Crafted from BPA/DEHP-free materials with FDA food-contact compliance for peace of mind.
- • **Effortless Maintenance:** Durable duckbill valves designed for easy plug-in and removal, saving you time and hassle.
- • **Perfect Fit, Every Time:** 21mm flanges engineered for seamless compatibility with Spectra S1, S2, and 9 Plus pumps.
- • **Versatile Bottle Compatibility:** Works flawlessly with Spectra wide-neck, Avant, and Maymom wide-mouth bottles for ultimate flexibility.
- • **Trusted Quality, Proven Performance:** Backed by over 2,000 glowing reviews and independent lab testing to ensure reliable suction power.

## Overview

Maymom’s 21mm flange and duckbill valve set offers a high-quality, BPA-free, FDA-compliant alternative compatible with Spectra S1, S2, and 9 Plus breast pumps. Designed for easy use and maintenance, these parts deliver reliable suction and fit a variety of wide-neck bottles, backed by thousands of positive reviews and rigorous independent testing.

## Description

Contents: 2 Flanges and 2 duckbills. Made by Maymom, not by original spectra company. Maymom is not affiliated with Uzinmedicare, the trademark owner of spectra.

Review: Not very good quality. - Flimsy with rough edges.
Review: Good - Good

## 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 |
| Brand | Maymom |
| Brand Name | Maymom |
| Colour | White Valve |
| Customer Reviews | 4.7 out of 5 stars 2,070 Reviews |
| Included Components | Bottle, Valve |
| Included components | Bottle, Valve |
| Is the item dishwasher safe? | No |
| Item Weight | 0.08 Kilograms |
| Item weight | 0.08 Kilograms |
| Manufacturer | Maymom |
| Manufacturer Part Number | ca_S012W-FxxDx2 |
| Material | Plastic Silicone |
| Material Type | Plastic Silicone |
| Model Number | S012W-FxxDx2 |
| Product Style | Compatible |
| Size | 21 mm Flanges |
| Special Features | Closed System |
| Special feature | Closed System |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** Maymom
- **Colour:** White Valve
- **Dishwasher safe?:** No
- **Included components:** Bottle, Valve
- **Item weight:** 0.08 Kilograms
- **Manufacturer:** Maymom
- **Material:** Plastic Silicone
- **Size:** 21 mm Flanges
- **Special feature:** Closed System
- **Style:** Compatible

## Images

![Maymom 21mm Flange and Duckbill Valve Compatible with Spectra S1, S2 and 9 Plus - Image 1](https://m.media-amazon.com/images/I/81wbohX86oL.jpg)
![Maymom 21mm Flange and Duckbill Valve Compatible with Spectra S1, S2 and 9 Plus - Image 2](https://m.media-amazon.com/images/I/71VFo-PFUGL.jpg)
![Maymom 21mm Flange and Duckbill Valve Compatible with Spectra S1, S2 and 9 Plus - Image 3](https://m.media-amazon.com/images/I/81qegQLudqL.jpg)
![Maymom 21mm Flange and Duckbill Valve Compatible with Spectra S1, S2 and 9 Plus - Image 4](https://m.media-amazon.com/images/I/71Dx+IX9kPL.jpg)
![Maymom 21mm Flange and Duckbill Valve Compatible with Spectra S1, S2 and 9 Plus - Image 5](https://m.media-amazon.com/images/I/51OzZ6Hps7L.jpg)

## 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

## Customer Reviews

### ⭐⭐⭐ Not very good quality.
*by A***H on 26 May 2026*

Flimsy with rough edges.

### ⭐⭐⭐⭐⭐ Good
*by T***A on 8 January 2026*

Good

### ⭐⭐⭐⭐⭐ Best replacement parts for my Spectra S2
*by C***R on 29 August 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!

## 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
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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-20*