spectra duckbill valve
Skip itBrand-locked demand (top 5 brands take 99% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible16.4%search→purchase rate — share of searches ending in a sale
Returns
Great1.5%return rate — above 6% kills the launch gate
Market size
Good$805K$805K/yr · 401K searches
Price range
Good$8.06–$27.54cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Good$12.26avg listing price — sweet spot $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Bad4,535.8avg incumbent reviews — the moat a new listing must climb
Growth
Bad-11.6%90-day search growth — must beat 0% to launch
Competition
Bad83%top-5 click share — a locked-up shelf
Brand share
Bad99%top-5 brand share — brand-locked demand
Competition
The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.Brands
6 rising
Sellers
11
Top-5 brand share
99%
Open market
0%
- Maymom31%
- Papablic27%
- SPECTRA17%
- Legendairy Milk17%
- Momstouch7%
- BACAYZZL1%
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share![[6-Count] Papablic Duckbill Valves Replacement Milk Valves Compatible with Spectra S1 S2 & Medela Breast Pumps Parts Accessories BPA & DEHP Free Food-Grade Silicone Easy to Clean White](https://m.media-amazon.com/images/I/31kl74xBDdL.jpg)
[6-Count] Papablic Duckbill Valves Replacement Milk Valves Compatible with Spectra S1 S2 & Medela Breast Pumps Parts Accessories BPA & DEHP Free Food-Grade Silicone Easy to Clean White
Papablic$8.714.6★5,237 rev
Maymom Duckbill Valves Compatible with Spectra S1 S2 9 Plus Dew 350 Not Original Spectra Pump Parts S2 Accessories Replace Valve (White 6ct)
Maymom$9.044.7★13,372 rev
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
Legendairy Milk$11.764.4★1,673 rev
Spectra - Duckbill Valve Replacement for Breast Milk Pump (Pack of 2) - Fits Small Medium Large or X-Large Breast Shields and Flanges
SPECTRA$13.924.7★3,916 rev
Maymom Pump Parts Compatible with Spectra S1 S2 9 Plus Synergy Gold Incl Duckbill Valve Silicone Membrane Not Original Spectra S1 S2 Replacement Pump Parts
Maymom$12.504.7★3,771 rev
Newest
by launch date
BACAYZZL 14 Count Duckbill Valves Compatible with Spectra S1 S2 9 Plus Synergy Gold Accessories Valves Replace Not Original Spectra Replacement Pump Parts
BACAYZZL$11.0326 rev
Momstouch Duckbill Valves for Spectra. Replacement Duckbill Valves for Spectra S1 S2 9 Plus SG Pumps. Not Original Accessories (6 Count)
Momstouch$8.0639 rev
Momstouch 6 Duckbill Valves and 4 Silicone Membrane for Spectra and Motif Luna. Replacement Duckbill Valves for Spectra S1 S2 9 Plus SG Pumps. Not Original Accessories
Momstouch$10.0636 rev
Spectra - Duckbill Valve Replacement for Breast Milk Pump (Pack of 4) - Fits Small Medium Large or X-Large Breast Shields and Flanges
SPECTRA$27.543,916 rev
Maymom 8 Count Duckbill Valves Compatible with Spectra S1 S2 9 Plus Dew 350 Not Original Spectra Pump Parts S2 Accessories Replace Valve (White)
Maymom$9.9713,372 rev
Trending
90-day click momentumMomstouch Duckbill Valves for Spectra. Replacement Duckbill Valves for Spectra S1 S2 9 Plus SG Pumps. Not Original Accessories (6 Count)
Momstouch$8.064.8★
Momstouch 6 Duckbill Valves and 4 Silicone Membrane for Spectra and Motif Luna. Replacement Duckbill Valves for Spectra S1 S2 9 Plus SG Pumps. Not Original Accessories
Momstouch$10.064.2★
BACAYZZL 14 Count Duckbill Valves Compatible with Spectra S1 S2 9 Plus Synergy Gold Accessories Valves Replace Not Original Spectra Replacement Pump Parts
BACAYZZL$11.033.6★
Spectra - Duckbill Valve Replacement for Breast Milk Pump (Pack of 4) - Fits Small Medium Large or X-Large Breast Shields and Flanges
SPECTRA$27.544.7★
Maymom Pump Parts Compatible with Spectra S1 S2 9 Plus Synergy Gold Incl Duckbill Valve Silicone Membrane Not Original Spectra S1 S2 Replacement Pump Parts
Maymom$12.504.7★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -11.6% search growth over the last 90 days.Peak months: Sep · busiest ÷ quietest = 3.2×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality”
“Exact fit”
“Very helpful and easy to use”
“easy to clean”
“great value at a nice price”
“Love the color”
“There were compatible with my spectra S1”
“Great quality and durable”
“so I like keeping replacements on hand”
“plenty of them so I can have one sitting to be washed”
What buyers complain about
“Bad quality”
“Not durable at all”
“am unable to use it”
“They are a little loose”
“Leaky”
“Not a good deal”
“The packaging appeared brand new”
“Don't work well”
“make an irritating clicking sound”
“Defective”