---
title: "Medela Valves and Membranes Set — $121K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/baby-products/medela-valves-and-membranes-set"
last_updated: "2026-08-09T06:29:38.418Z"
locale: en
meta:
description: "Niche score 38/100 · $121K/yr market · 57K searches/yr · $22.37 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 38/100 · $121K/yr market · 57K searches/yr · $22.37 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Medela Valves and Membranes Set — $121K/yr Amazon US Niche (2026) - Flapen"
---
# **medela valves and membranes set**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 28Growth 23Conversion 85Competition 21Returns 55Price range 87Avg price 93Brand share 0Review moat 35Quality gap 20
**Avg price**
**Great****$22.37**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.56–$61.24**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****9.5%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Good****2.8%**
return rate — above 5% kills the launch gate
**Review moat**
**Okay****2,992.08**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****$121K**
$121K/yr · 57K searches
**Growth**
**Bad****-3.3%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****75%**
top-5 click share — a locked-up shelf
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, medela valves and membranes set is a $121K/yr Amazon United States market (57K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 38/100.
Data updated Jul 12, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **medela valves and membranes set market data**
- **Units sold / yr**
- **5K–6K**
- avg 250–500/product
- **Revenue / yr**
- **$112K–$134K**
- units × avg price
- **Conversion rate**
- **9.5%**
- **Avg BSR**
- **#295**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **67%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **55 months**
- **Avg seller age**
- **169 days**
## **Competition & brand share**
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**4 **▲rising
**Sellers**
**15**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**75%**
Top 20: 100%
**Open market**
**0%**
- Medela67% - Maymom17% - NENESUPPLY14% - CozyBabe3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -3.3% search growth over the last 90 days.
3K2K seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/baby-products/medela-valves-and-membranes-set/trend)
## **Top medela valves and membranes set search terms**
- **medela symphony pump parts**50K/yr-4.8%6.6% conv. - **medela symphony parts**4K/yr+10.1%5.6% conv. - **medela pump parts symphony**3K/yr+5.0%8.6% conv. [**All search terms **](https://flapen.com/research/us/baby-products/medela-valves-and-membranes-set/search-terms)
## **Top medela valves and membranes set products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%15%$18K30%$36K45%$54K60%$72K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 12 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Medela Symphony Breast Pump Kit Double Pumping System Includes Everything Needed to Start Pumping with Symphony Made Without BPA**Medela**$41.53**4.7★1,437 rev](https://www.amazon.com/dp/B000C13SXI) [2**Medela Spare Valves and Membranes 2 Sets Authentic Medela Replacement Parts Designed for All Breast Pumps Except Sonata and Freestyle Made Without BPA**Medela**$9.56**4.8★5,346 rev](https://www.amazon.com/dp/B0006Q561Q) [3**Maymom Pump Parts Compatible with Medela Symphony 19mm Flange (Detachable Shield and Connector) Not Original Medela Symphony Replacement Pump Parts Tube Cap Membrane Valve**Maymom**$26.68**5.0★1 rev](https://www.amazon.com/dp/B0FRMCZZHV) [4**Nenesupply Pump Parts with 24mm Flanges Compatible with Medela Pump in Style Parts Accessories Breast Pump Not Original Medela Pump Parts Incl. 24mm Flange Breastshield Connector Valve Membrane Tubing**NENESUPPLY**$19.23**4.6★1,149 rev](https://www.amazon.com/dp/B08BR7FC9X) [5**2X One-piece Breastshields Valves Membranes Compatible with Medela Pump Parts Pump in Style Lactina Symphony Swing; 24 mm Standard breastshields; Made by Maymom**Maymom**$13.65**4.4★6,786 rev](https://www.amazon.com/dp/B00GKNIGAM)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Two Complete Sets Compatible with Medela Symphony Breast Pump Replacement Parts (24mm Two Complete Sets with 17/19/21mm Flanges)**CozyBabe**$61.24**7 rev4mo ago](https://www.amazon.com/dp/B0GKWBXWBK) [**Maymom Pump Parts Compatible with Medela Symphony 19mm Flange (Detachable Shield and Connector) Not Original Medela Symphony Replacement Pump Parts Tube Cap Membrane Valve**Maymom**$26.68**1 rev9mo ago](https://www.amazon.com/dp/B0FRMCZZHV) [**Nenesupply Membranes Valves Compatible with Medela Breast Pump Parts Not Original Medela Membrane Replacement Parts Accessories Compatible with Pump in Style Parts Symphony Harmony Hand Pump**NENESUPPLY**$9.86**2,585 rev12y ago](https://www.amazon.com/dp/B00GMD8Q5A) [**2X One-piece Breastshields Valves Membranes Compatible with Medela Pump Parts Pump in Style Lactina Symphony Swing; 24 mm Standard breastshields; Made by Maymom**Maymom**$13.65**6,786 rev12y ago](https://www.amazon.com/dp/B00GKNIGAM) [**Medela Symphony Protective Cap & Membranes.**Medela**$26.64**55 rev12y ago](https://www.amazon.com/dp/B004D7QLNG)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Two Complete Sets Compatible with Medela Symphony Breast Pump Replacement Parts (24mm Two Complete Sets with 17/19/21mm Flanges)**CozyBabe**$61.24**4.8★**▲ 273%**](https://www.amazon.com/dp/B0GKWBXWBK) [**Maymom Pump Parts Compatible with Medela Symphony 19mm Flange (Detachable Shield and Connector) Not Original Medela Symphony Replacement Pump Parts Tube Cap Membrane Valve**Maymom**$26.68**5.0★**▲ 174%**](https://www.amazon.com/dp/B0FRMCZZHV) [**Nenesupply Pump Parts with 24mm Flanges Compatible with Medela Pump in Style Parts Accessories Breast Pump Not Original Medela Pump Parts Incl. 24mm Flange Breastshield Connector Valve Membrane Tubing**NENESUPPLY**$19.23**4.6★**▲ 52%**](https://www.amazon.com/dp/B08BR7FC9X) [**2X One-piece Breastshields Valves Membranes Compatible with Medela Pump Parts Pump in Style Lactina Symphony Swing; 24 mm Standard breastshields; Made by Maymom**Maymom**$13.65**4.4★**▲ 22%**](https://www.amazon.com/dp/B00GKNIGAM) [**Medela Symphony Protective Cap & Membranes.**Medela**$26.64**4.6★**— 0%**](https://www.amazon.com/dp/B004D7QLNG)
**~~View all trending →~~**
## **What buyers say about medela valves and membranes set**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**14%
*“Great quality”*
**Value For Money**13%
*“Great value”*
**Storage Capacity**13%
*“Great way to store breastmilk”*
**Size-Overall**12%
*“Fits perfectly”*
**Ease Of Use**9%
*“easy to use”*
**Ease Of Cleaning**8%
*“easy to clean”*
**Advertised Vs Actual Product**5%
*“As described”*
**Compatibility-Overall**4%
*“theyre compatible with both”*
**Leak-Proof**4%
*“they dont leak”*
**Safety Standards**3%
*“Saver life”*
### **What buyers complain about **
**Compatibility-Overall**13%
*“is not compatible”*
**Value For Money**13%
*“I felt they were kind of pricey”*
**Leak-Proof**10%
*“spilled breast milk because there wasn't a tight seal”*
**Product Condition**10%
*“Bottles were used previously as they had some wear on it”*
**Measurement/Reading Accuracy**8%
*“Only gave three stars because I found the measuring lines hard to read”*
**Ease Of Cleaning**7%
*“Cleaning pump pieces often can be a hassle”*
**Durability**5%
*“One of the pieces cracked within a week of using”*
**Defective Material/Parts**5%
*“One of the pieces cracked within a week of using”*
**Size-Overall**3%
*“Unfortunately, they were too small and did not”*
### **Top return reasons **
**Size-Overall**34%
**Advertised Vs Actual Product**10%
**Value For Money**7%
**Defective Material/Parts**6%
**Product Condition**6%
**Breastfeeding Friendly**6%
**Material Quality**6%
**Compatibility-Overall**5%
**Functionality-Overall**4%
**Leak-Proof**3%
## **Common questions**
- **Is medela valves and membranes set profitable to sell on Amazon United States?**
- The niche generates $121K/yr across 12 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -3.3%. Flapen's verdict: Skip it (38/100).
- **How competitive is the medela valves and membranes set niche?**
- 4 brands and 15 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in medela valves and membranes set?**
- Top complaints mined from reviews: Compatibility-Overall, Value For Money, Leak-Proof. The return rate is 2.8%.
- **When does demand for medela valves and membranes set peak?**
- Demand peaks in Sep–Oct; the busiest month runs 1.7× the quietest.
- **What does it cost to enter the medela valves and membranes set niche?**
- Listings span $9.56–$61.24; the average listing price is $22.37 (sweet spot $15–$100). The average incumbent carries 2,992 reviews — the moat a new listing must climb.
## **Related niches in Baby Products**
- 65 [**baby car seat fan**](https://flapen.com/research/us/baby-products/baby-car-seat-fan)$31K/yr+151.9%**Worth a look**- 65 [**tummy time toys**](https://flapen.com/research/us/baby-products/tummy-time-toys)$11.8M/yr-9.5%**Worth a look**- 65 [**sunscreen brush**](https://flapen.com/research/us/baby-products/sunscreen-brush)$615K/yr+314.7%**Worth a look**- 65 [**toddler step stool**](https://flapen.com/research/us/baby-products/toddler-step-stool)$4.1M/yr-7.9%**Worth a look**- 65 [**training diapers 2t-3t**](https://flapen.com/research/us/baby-products/training-diapers-2t-3t)$6.1M/yr+8.7%**Launch it**- 65 [**water baby carrier**](https://flapen.com/research/us/baby-products/water-baby-carrier)$431K/yr+176.5%**Worth a look**[**All Baby Products niches **](https://flapen.com/research/us/baby-products)