---
product_id: 626899124
title: "Momcozy Original S9 Pro/S12 Pro Duckbill Valves & Silicone Diaphragm 1 PCS"
brand: "momcozy"
price: "R487"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Momcozy"
url: https://www.desertcart.co.za/products/626899124-momcozy-original-s9-pro-s12-pro-duckbill-valves-and-silicone
store_origin: ZA
region: South Africa
---

# Closed system prevents leaks Dishwasher & boil-safe cleaning BPA-free food-grade silicone Momcozy Original S9 Pro/S12 Pro Duckbill Valves & Silicone Diaphragm 1 PCS

**Brand:** momcozy
**Price:** R487
**Availability:** ✅ In Stock

## Summary

> 🍼 Pump smarter, not harder — because every drop counts!

## Quick Answers

- **What is this?** Momcozy Original S9 Pro/S12 Pro Duckbill Valves & Silicone Diaphragm 1 PCS by momcozy
- **How much does it cost?** R487 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/626899124-momcozy-original-s9-pro-s12-pro-duckbill-valves-and-silicone)

## Best For

- momcozy enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Hygiene:** Dishwasher safe and steam sterilizable at 100°C for ultimate cleanliness.
- • **Mom-Approved Safety:** Crafted from BPA-free, food-grade silicone for pure, worry-free milk.
- • **Leak-Proof Confidence:** Closed system design with precision-fit diaphragm seals to prevent milk loss.
- • **Seamless Compatibility:** Specifically engineered for Momcozy S9 Pro/S12 Pro pumps—no guesswork, just perfect fit.
- • **Comfort Meets Efficiency:** Soft yet durable duckbill valves optimize milk flow and reduce pumping discomfort.

## Overview

The Momcozy Original S9 Pro/S12 Pro Replacement Accessories pack includes premium duckbill valves and silicone diaphragms designed exclusively for the S9 Pro and S12 Pro wearable breast pumps. Made from BPA-free, food-grade silicone, these closed system parts ensure leak-proof performance and easy cleaning—dishwasher safe and steam sterilizable. Trusted by thousands of moms for enhanced comfort, hygiene, and pumping efficiency.

## Description

desertcart.com : Momcozy Original S9 Pro/S12 Pro Replacement Accessories, Only Compatible with Momcozy S9 Pro/S12 Pro Breast Pump NOT for S9/S12(Duckbill Valves & Silicone Diaphragm,1 Pack) : Baby

Review: Comfortable fit, and made pumping so much better - These flange inserts were a game changer for my pumping experience. The sizing options made it easy to get a much better fit, which improved comfort and efficiency right away. The silicone is soft but sturdy, and they stay in place well during pumping. I noticed less discomfort and better output once I started using them. They’re easy to clean and fit perfectly with my pump. Highly recommend for anyone trying to fine-tune their flange size and make pumping more comfortable
Review: Worked like a charm - Compatible with the Momcozy S12 hands-free pump. Solved my painful pumping sessions and improved my milk output!

## Features

- The authentic Momcozy wearable breast pump duckbill valves & silicone diaphragm accessories are suitable for use with Momcozy S9 Pro/S12 Pro wearable breast pump.Momcozy Original Parts FSA/HSA eligible.
- Easy cleaning, wash Momcozy S9 Pro/S12 Pro pump parts after each use with warm soapy water and rinse well. Please use boiling water/steam, with a temperature of around 100°C (212°F).
- BPA-free, made of food-grade silicone material. All Momcozy pump parts that come in contact with breast milk are BPA-free, giving you peace of mind about your baby's milk.
- Made for moms, by moms. We`ve committed our lives to provide the best breast pumps, accessories, education, and customer care that we can, supporting every mother with the beauty of parenthood. Meeting moms pump wherever, without hassle needs.
- Momcozy diaphragm and duckbill valve accessories can perfectly meet the accessories you need when using Momcozy S9 Pro/S12 Pro breast pump. The diaphragm is used to help the breast pump maintain the seal to prevent milk leakage. The duckbill valve can be used to drain milk to the bottom of the container.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CYT2ZD27 |
| Additional Features | Closed System |
| Best Sellers Rank | #729 in Baby ( See Top 100 in Baby ) #15 in Electric Breast Pumps |
| Brand | Momcozy |
| Brand Name | Momcozy |
| Color | Transprent |
| Customer Reviews | 4.4 out of 5 stars 2,224 Reviews |
| Included Components | Duckbill |
| Is the item dishwasher safe? | Yes |
| Manufacturer | Momcozy |
| Material | Silicone |
| Material Type | Silicone |
| Number of Items | 1 |
| Size | Valve & Diaphragm Set (1-Pack) |
| Special Feature | Closed System |
| UPC | 810123503346 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Momcozy
- **Included Components:** Duckbill
- **Material:** Silicone
- **Number of Items:** 1
- **Special Feature:** Closed System

## Images

![Momcozy Original S9 Pro/S12 Pro Duckbill Valves & Silicone Diaphragm 1 PCS - Image 1](https://m.media-amazon.com/images/I/516JkxEwUyL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Comfortable fit, and made pumping so much better
*by A***R on December 15, 2025*

These flange inserts were a game changer for my pumping experience. The sizing options made it easy to get a much better fit, which improved comfort and efficiency right away. The silicone is soft but sturdy, and they stay in place well during pumping. I noticed less discomfort and better output once I started using them. They’re easy to clean and fit perfectly with my pump. Highly recommend for anyone trying to fine-tune their flange size and make pumping more comfortable

### ⭐⭐⭐⭐⭐ Worked like a charm
*by H***S on December 28, 2025*

Compatible with the Momcozy S12 hands-free pump. Solved my painful pumping sessions and improved my milk output!

### ⭐⭐⭐⭐⭐ As advertised
*by S***. on December 3, 2025*

Functions as advertised. Fits in my Momcozy M9 wearable pump flanges.

## Frequently Bought Together

- Momcozy Original S9 Pro/S12 Pro Replacement Accessories, Only Compatible with Momcozy S9 Pro/S12 Pro Breast Pump NOT for S9/S12(Duckbill Valves & Silicone Diaphragm,1 Pack)
- Momcozy Flange Insert 19mm Compatible with 24mm Flange/Shield of Most Pumps, Insert for Breast Pump Replacement Accessories, 4PCS 19mm
- TOVVILD 12 Pack S9 Pro / S12 Pro / S9 / S12 Duckbill Valve Silicone Diaphragm, Compatible with momcozy Breastpump, Electric Breast Pump Replacement Parts Accessories

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**Shop now:** [https://www.desertcart.co.za/products/626899124-momcozy-original-s9-pro-s12-pro-duckbill-valves-and-silicone](https://www.desertcart.co.za/products/626899124-momcozy-original-s9-pro-s12-pro-duckbill-valves-and-silicone)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-14*