---
product_id: 341647155
title: "Nenesupply Compatible 21mm Flange and Duckbill Valves for Spectra S1 Spectra S2 Breastpump Not Original Spectra Pump Parts Replace Spectra S2 Accessories and Flange Not O"
brand: "nenesupply"
price: "€ 35.29"
currency: EUR
in_stock: true
reviews_count: 5
category: "Nenesupply"
url: https://www.desertcart.ie/products/341647155-nenesupply-compatible-21mm-flange-and-duckbill-valves-for-spectra-s1
store_origin: IE
region: Ireland
---

# OEM-level suction power 21mm precision flange size BPA-free, steam-safe materials Nenesupply Compatible 21mm Flange and Duckbill Valves for Spectra S1 Spectra S2 Breastpump Not Original Spectra Pump Parts Replace Spectra S2 Accessories and Flange Not O

**Brand:** nenesupply
**Price:** € 35.29
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your pump game with precision and peace of mind!

## Quick Answers

- **What is this?** Nenesupply Compatible 21mm Flange and Duckbill Valves for Spectra S1 Spectra S2 Breastpump Not Original Spectra Pump Parts Replace Spectra S2 Accessories and Flange Not O by nenesupply
- **How much does it cost?** € 35.29 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/341647155-nenesupply-compatible-21mm-flange-and-duckbill-valves-for-spectra-s1)

## Best For

- nenesupply enthusiasts

## Why This Product

- Trusted nenesupply brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Custom Comfort:** Multiple flange sizes available to match your unique pumping needs
- • **Safe & Sanitary:** BPA-free plastic, lab-tested and steam/microwave sterilizable for ultimate hygiene
- • **Effortless Maintenance:** Duckbill valves designed for quick install & removal—no fuss, no downtime
- • **Perfect Fit, Zero Compromise:** Compatible with Spectra S1, S2 & 9 Plus for seamless pump integration
- • **Trusted Aftermarket Excellence:** High-quality Nenesupply parts rival OEM performance at a fraction of the cost

## Overview

Nenesupply’s 21mm flange and duckbill valve set offers a perfect, BPA-free replacement for Spectra S1, S2, and 9 Plus breast pumps. Engineered for OEM-level suction and easy maintenance, these lab-tested parts ensure hygienic, comfortable pumping with multiple flange sizes available to fit your needs.

## Description

COMPLETE RANGE of AFTERMARKET COMPATIBLE PUMP PARTS for SPECTRA:Nenesupply makes complete range of compatible aftermarket pump parts for Spectra. Including Flange, Duckbill Valve, Backflow Protector (Short end and Long end), Tubing, Collection Bottles (Wide Mouth and Narrow Mouth, Breastshield converter. All available on desertcart.TRUSTED BRAND: Nenesupply makes high quality compatible breastpump parts for Medela, Spectra, Ameda, and Avent breastpumps. Buy with confidence!Spectra and associated pump model names are registered trademark of Spectra. NENESUPPLY is an independent company. It is not associated with Spectra.

Review: These worked perfectly with my Spectra. It was nice to find these flanges at such a good price that also worked with the pump I was using.
Review: Fit my pump perfectly and was the size I needed.

## 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07NBR778K |
| Additional product features | Portable |
| Batteries required | No |
| Best Sellers Rank | #12,528 in Baby Products ( See Top 100 in Baby Products ) #57 in Breast Pump Accessories |
| Country of Origin | USA |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,801) |
| Date First Available | 11 June 2019 |
| Dishwasher safe | No |
| Included Components | Valve |
| Item Dimensions LxWxH | 10 x 15 x 11 Centimeters |
| Item Weight | 18 g |
| Item model number | Flange 21mm + Valves |
| Manufacturer | NENESUPPLY |
| Manufacturer recommended age | 12 years and up |
| Material | Plastic |
| Model Number | Flange 21mm + Valves |
| Product Dimensions | 10 x 15 x 11 cm; 18 g |
| Pump type | Manual |
| Style | Compact |

## Product Details

- **Brand:** NENESUPPLY
- **Colour:** Clear White
- **Included Components:** Valve
- **Is Dishwasher Safe:** No
- **Manufacturer:** NENESUPPLY
- **Material:** Plastic
- **Operation Mode:** Manual
- **Size:** 4 Piece Set
- **Special Feature:** Portable
- **Style:** Compact

## Images

![Nenesupply Compatible 21mm Flange and Duckbill Valves for Spectra S1 Spectra S2 Breastpump Not Original Spectra Pump Parts Replace Spectra S2 Accessories and Flange Not O - Image 1](https://m.media-amazon.com/images/I/61u1EQxXs0L.jpg)
![Nenesupply Compatible 21mm Flange and Duckbill Valves for Spectra S1 Spectra S2 Breastpump Not Original Spectra Pump Parts Replace Spectra S2 Accessories and Flange Not O - Image 2](https://m.media-amazon.com/images/I/61sJ-Zq57sL.jpg)
![Nenesupply Compatible 21mm Flange and Duckbill Valves for Spectra S1 Spectra S2 Breastpump Not Original Spectra Pump Parts Replace Spectra S2 Accessories and Flange Not O - Image 3](https://m.media-amazon.com/images/I/613AtBFHYyL.jpg)
![Nenesupply Compatible 21mm Flange and Duckbill Valves for Spectra S1 Spectra S2 Breastpump Not Original Spectra Pump Parts Replace Spectra S2 Accessories and Flange Not O - Image 4](https://m.media-amazon.com/images/I/51AvgsCwVVL.jpg)
![Nenesupply Compatible 21mm Flange and Duckbill Valves for Spectra S1 Spectra S2 Breastpump Not Original Spectra Pump Parts Replace Spectra S2 Accessories and Flange Not O - Image 5](https://m.media-amazon.com/images/I/61hF1geOpcL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Is there 2 per order?**
A: Yes. 2 pcs are included.

**Q: Can you use standard spectra duck valves on the flanges? Or do you have to buy this brand to replace**
A: Yes but i returned these and bought maymom. The designed its flawed leaving milk to leak if you tilt while pumping in anyway this is because the bottle doesnt screw in all the way it leaves a space which is senseless because sometimes mothers have to squeeze and pump at the same time which makes us tilt the bottle by accident.

**Q: Can this be used sign the Ameda Mya pump?**
A: I’m unfamiliar with that pump. I did buy an adapter to fit these on the medela bottles.

**Q: Do these fit MAM bottles?**
A: No. But they will fit Phillips Avent bottles.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***. on 29 September 2025*

These worked perfectly with my Spectra. It was nice to find these flanges at such a good price that also worked with the pump I was using.

### ⭐⭐⭐⭐⭐ Review
*by K***M on 16 October 2019*

Fit my pump perfectly and was the size I needed.

### ⭐⭐⭐⭐⭐ Review
*by R***A on 24 January 2026*

Tunnel is extra long, longer than even the original Spectra flanges which is so hard to find online. Exactly what I was looking for, I bought multiple. So nice that it's HSA/FSA covered too

## Frequently Bought Together

- Nenesupply 21mm 2 pc Flanges Duckbill Valves Compatible with Spectra S2 S1 9 Plus Synergy Gold Breastpump Replacement to Spectra Pump Parts Flange Accessories Wide Mouth Work with Backflow Protector
- 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

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-18*