Valve
FailThe top 5 products take 85% of clicks, so Valve is a Fail.
- Flapen Score
- 39 / 100Ranks 1,670 of 2,472 Baby Products niches · −5 vs the category median of 4439
- Market size
- $168K/yr213K searches / yr
- 90-day growth
- -24.9%search demand this quarter
- Competition
- 85%top-5 click share · 7 brands · 13 sellers
Flapen Score
Valve against its category
The dotted line is the Baby Products average. Past it, Valve is stronger. Inside it, weaker.
Market
The Valve market on Amazon at a glance
Shoppers on Amazon United States searched for Valve 213K times last year and spent an estimated $168K. The top 5 brands take 95% of clicks. Demand peaks in Jan–Jun. Flapen scores it 39 out of 100, a Fail.
01 · Demand
An estimated 4.4% of those searches ended in a purchase.
Shoppers searched for this 213K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 4.4% of those searches ended in a purchase. Searches in the last 90 days moved -24.9% against the 90 days before. Searches, conversion and average price together put the market at an estimated $168K a year.
- Searches, last 12 months
- 213K
- Growth, 90 days vs prior 90
- -24.9%
- Conversion, latest week
- 4.4%
- Market size, estimated
- $168Ka year
- Peak month
- June2.0× the quietest month
- Top search term
- legendary milk flange inserts66K searches a year
02 · Price
A sale here is worth $17.79.
Listings sell for $17.79 on average, from $9.68 to $41.19. Amazon reports units sold in ranges. This niche sold 4K to 5K a year. The average listing sells 250 to 500 of them. At $17.79 that is $4K to $9K a year per listing.
- Average price
- $17.79inside the $15 to $100 sweet spot
- Price range
- $9.68–$41.19
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 4K–5K
- Units per listing a year
- 250–500
- Revenue per listing a year
- $4K–$9K
- Returns
- 2.2%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads and reviews.
100% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #71 within Breastfeeding. It carries 2,816 reviews at 4.36 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 100%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #71in Breastfeeding
- Average rating
- 4.36 starsAmazon United States average 4.42 stars
- Average reviews
- 2,816per listing
- Listings tracked
- 10
04 · Newcomers
Brands here are settling in.
The brands on the shelf have sold for 42 months on average, so the names here are settling in.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 42 months
Products
Top Valve products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 12, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Legendairy Milk Duckbill Valves with Pull Tab - Compatible with Spectra S1 S2 9 Plus Medela Motif Baby Buddha & Zomee - Duckbill Valve Replacement Pump Parts BPA Free Silicone 6 Pack
- Price
- $11.76
- Rating
- 4.4/5
- Reviews
- 1,673
- Age
- 5y ago

Legendairy Milk Pumping Spray 4 oz. Helps Sore Nipples & Clogged Ducts Organic Lubricant for Breast Shields and Flanges Vegan Breast Pump Spray Natural & Lanolin-Free Made in USA
- Price
- $24.77
- Rating
- 4.5/5
- Reviews
- 1,557
- Age
- 3y ago

Nursi Luna Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flanges/Shield of Most Pumps Flange Sizing Kit Silicone Flanges Insert Breastfeeding Essentials Kit for New Moms
- Price
- $10.05
- Rating
- 4.6/5
- Reviews
- 2,006
- Age
- 2y ago

Momcozy 999 Silver Nursing Cups Original Perforated Breathable Design 999 Silver Nipple Cover for Breastfeeding Essential Nipple Shield for Nursing Newborn Metal Nipple Shields Regular Size
- Price
- $41.19
- Rating
- 4.3/5
- Reviews
- 691
- Age
- 2y ago

Elvie Nipple Cushions 17mm | Soft-Silicone Nipple Cushions to Enhance fit for Improved Comfort and Efficiency (2 Pack)
- Price
- $20.20
- Rating
- 4.2/5
- Reviews
- 486
- Age
- 3y ago
Trending
estimated 90-day click momentum
Momcozy 999 Silver Nursing Cups Original Perforated Breathable Design 999 Silver Nipple Cover for Breastfeeding Essential Nipple Shield for Nursing Newborn Metal Nipple Shields Regular Size
- Price
- $41.19
- Rating
- 4.3/5
- Reviews
- 691
- Age
- 2y ago

Nursi Luna Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flanges/Shield of Most Pumps Flange Sizing Kit Silicone Flanges Insert Breastfeeding Essentials Kit for New Moms
- Price
- $10.05
- Rating
- 4.6/5
- Reviews
- 2,006
- Age
- 2y ago

Durceler 17mm Silicone Flange Inserts Compatible with Medela/for Spectra S1 S2 / Elvie / S18 S21 / Momcozy S9 S12/ TSRETE 24mm Breast Pump Shields or Freemie 25mm; Reduce Nipple Tunnel Down to 17mm
- Price
- $14.59
- Rating
- 4.2/5
- Reviews
- 160
- Age
- 4y ago

Nuliie 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Essential for Moms
- Price
- $9.68
- Rating
- 4.6/5
- Reviews
- 4,179
- Age
- 2y ago

Legendairy Milk Liquid Gold Lactation Support | Lactation Supplement with Organic Goats Rue Milk Thistle Shatavari Fennel Alfalfa & Anise | Breastfeeding Supplements 1 Pack
- Price
- $21.18
- Rating
- 4.1/5
- Reviews
- 14,805
- Age
- 6y ago
Newest
by launch date
Momcozy 999 Silver Nursing Cups Original Perforated Breathable Design 999 Silver Nipple Cover for Breastfeeding Essential Nipple Shield for Nursing Newborn Metal Nipple Shields Regular Size
- Price
- $41.19
- Rating
- 4.3/5
- Reviews
- 691
- Age
- 2y ago

Nursi Luna Flange Sizing Kit 3-in-1 with 13/15/17/19/21mm for 24mm Electric Breast Pump Flanges/Shields 10PCS Soft Silicone Flange Inserts for More Comfortable Pumping BPA-Free Essential for Moms
- Price
- $9.87
- Rating
- 4.6/5
- Reviews
- 2,081
- Age
- 2y ago

Nursi Luna Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flanges/Shield of Most Pumps Flange Sizing Kit Silicone Flanges Insert Breastfeeding Essentials Kit for New Moms
- Price
- $10.05
- Rating
- 4.6/5
- Reviews
- 2,006
- Age
- 2y ago

Nuliie 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Essential for Moms
- Price
- $9.68
- Rating
- 4.6/5
- Reviews
- 4,179
- Age
- 2y ago

Legendairy Milk Pumping Spray 4 oz. Helps Sore Nipples & Clogged Ducts Organic Lubricant for Breast Shields and Flanges Vegan Breast Pump Spray Natural & Lanolin-Free Made in USA
- Price
- $24.77
- Rating
- 4.5/5
- Reviews
- 1,557
- Age
- 3y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 85% of clicks. A locked shelf that new listings rarely crack.
Brands
7 rising
Sellers
13
Est. top-5 brand share
95%
Top 20: 100%
Est. top-5 click share
85%
Top 20: 100%
Open market
3%
- Legendairy Milk65%
- Nursi Luna11%
- Momcozy8%
- Elvie7%
- Nuliie4%
- Mompmuir3%
- Open — no brand owns it (1 brand, 3%)
Demand
Valve search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jan, Jun · busiest ÷ quietest = 2.0×
Search terms
Top Valve search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- legendary milk flange inserts66K/yr
- legendairy milk inserts35K/yr
- legendairy flange inserts31K/yr
- legendairy milk flanges13K/yr
- legendairy milk flange insert25K/yr
- legendairy milk duckbill valves10K/yr
- legendary flange inserts9K/yr
- legendairy milk flange inserts5K/yr
- legendary milk duckbill valves6K/yr
- legendary milk inserts5K/yr
Reviews and returns
What reviews say buyers love and hate about Valve
We read the reviews and the return reasons for every product selling here.
“Didn't work”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
18 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Valve questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









