---
title: "spectra duckbill valve — Niche Verdict: Skip it (46/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/baby-products/spectra-duckbill-valve"
last_updated: "2026-07-14T02:20:08.095Z"
locale: en
meta:
  description: "brand-locked demand (top 5 brands take 99% of clicks) — spectra duckbill valve doesn't clear our bar today."
  "og:description": "brand-locked demand (top 5 brands take 99% of clicks) — spectra duckbill valve doesn't clear our bar today."
  "og:title": "spectra duckbill valve — Niche Verdict: Skip it (46/100) | Amazon United States - Flapen"
---

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# **spectra duckbill valve**

**Skip it**

Brand-locked demand (top 5 brands take 99% of clicks) — this niche doesn't clear our bar today.

Market size 73Growth 19Conversion 98Competition 14Returns 86Price range 64Avg price 52Brand share 3Review moat 25Quality gap 40

**Conversion**

**Incredible****16.4%**

search→purchase rate — share of searches ending in a sale

**Returns**

**Great****1.5%**

return rate — above 6% kills the launch gate

**Market size**

**Good****$805K**

$805K/yr · 401K searches

**Price range**

**Good****$8.06–$27.54**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Avg price**

**Good****$12.26**

avg listing price — sweet spot $15–$100

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Review moat**

**Bad****4,535.8**

avg incumbent reviews — the moat a new listing must climb

**Growth**

**Bad****-11.6%**

90-day search growth — must beat 0% to launch

**Competition**

**Bad****83%**

top-5 click share — a locked-up shelf

**Brand share**

**Bad****99%**

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.

0%10%$80K20%$161K30%$241K40%$322K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 10 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![[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**$8.71**4.6★5,237 rev](https://www.amazon.com/dp/B07WHHQN6R) [2![Maymom Duckbill Valves Compatible with Spectra S1 S2 9 Plus Dew 350 Not Original Spectra Pump Parts S2 Accessories Replace Valve (White 6ct)](https://m.media-amazon.com/images/I/31el1-BCJaL.jpg)**Maymom Duckbill Valves Compatible with Spectra S1 S2 9 Plus Dew 350 Not Original Spectra Pump Parts S2 Accessories Replace Valve (White 6ct)**Maymom**$9.04**4.7★13,372 rev](https://www.amazon.com/dp/B07SNHJPX1) [3![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](https://m.media-amazon.com/images/I/41LdFP3ZeeL.jpg)**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**$11.76**4.4★1,673 rev](https://www.amazon.com/dp/B08MWQQN6W) [4![Spectra - Duckbill Valve Replacement for Breast Milk Pump (Pack of 2) - Fits Small Medium Large or X-Large Breast Shields and Flanges](https://m.media-amazon.com/images/I/21ye7fJ8+4L.jpg)**Spectra - Duckbill Valve Replacement for Breast Milk Pump (Pack of 2) - Fits Small Medium Large or X-Large Breast Shields and Flanges**SPECTRA**$13.92**4.7★3,916 rev](https://www.amazon.com/dp/B071VP23ZX) [5![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](https://m.media-amazon.com/images/I/41CFO0+PzqL.jpg)**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**$12.50**4.7★3,771 rev](https://www.amazon.com/dp/B08Q7CL35R)

**~~View all top sellers →~~**

### **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](https://m.media-amazon.com/images/I/31TzLnI0sXL.jpg)**BACAYZZL 14 Count Duckbill Valves Compatible with Spectra S1 S2 9 Plus Synergy Gold Accessories Valves Replace Not Original Spectra Replacement Pump Parts**BACAYZZL**$11.03**26 rev6mo ago](https://www.amazon.com/dp/B0G6YPCVBP) [![Momstouch Duckbill Valves for Spectra. Replacement Duckbill Valves for Spectra S1 S2 9 Plus SG Pumps. Not Original Accessories (6 Count)](https://m.media-amazon.com/images/I/319EUCxteBL.jpg)**Momstouch Duckbill Valves for Spectra. Replacement Duckbill Valves for Spectra S1 S2 9 Plus SG Pumps. Not Original Accessories (6 Count)**Momstouch**$8.06**39 rev7mo ago](https://www.amazon.com/dp/B0FKGL8DNQ) [![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](https://m.media-amazon.com/images/I/41wTkVnrOVL.jpg)**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**$10.06**36 rev7mo ago](https://www.amazon.com/dp/B0FMR3SX9J) [![Spectra - Duckbill Valve Replacement for Breast Milk Pump (Pack of 4) - Fits Small Medium Large or X-Large Breast Shields and Flanges](https://m.media-amazon.com/images/I/21GhPykYwFL.jpg)**Spectra - Duckbill Valve Replacement for Breast Milk Pump (Pack of 4) - Fits Small Medium Large or X-Large Breast Shields and Flanges**SPECTRA**$27.54**3,916 rev1y ago](https://www.amazon.com/dp/B0F67KS97C) [![Maymom 8 Count Duckbill Valves Compatible with Spectra S1 S2 9 Plus Dew 350 Not Original Spectra Pump Parts S2 Accessories Replace Valve (White)](https://m.media-amazon.com/images/I/41cTwrlK4ML.jpg)**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**$9.97**13,372 rev4y ago](https://www.amazon.com/dp/B0CLS2MHMD)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Momstouch Duckbill Valves for Spectra. Replacement Duckbill Valves for Spectra S1 S2 9 Plus SG Pumps. Not Original Accessories (6 Count)](https://m.media-amazon.com/images/I/319EUCxteBL.jpg)**Momstouch Duckbill Valves for Spectra. Replacement Duckbill Valves for Spectra S1 S2 9 Plus SG Pumps. Not Original Accessories (6 Count)**Momstouch**$8.06**4.8★**▲ 165%**](https://www.amazon.com/dp/B0FKGL8DNQ) [![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](https://m.media-amazon.com/images/I/41wTkVnrOVL.jpg)**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**$10.06**4.2★**▲ 152%**](https://www.amazon.com/dp/B0FMR3SX9J) [![BACAYZZL 14 Count Duckbill Valves Compatible with Spectra S1 S2 9 Plus Synergy Gold Accessories Valves Replace Not Original Spectra Replacement Pump Parts](https://m.media-amazon.com/images/I/31TzLnI0sXL.jpg)**BACAYZZL 14 Count Duckbill Valves Compatible with Spectra S1 S2 9 Plus Synergy Gold Accessories Valves Replace Not Original Spectra Replacement Pump Parts**BACAYZZL**$11.03**3.6★**▲ 121%**](https://www.amazon.com/dp/B0G6YPCVBP) [![Spectra - Duckbill Valve Replacement for Breast Milk Pump (Pack of 4) - Fits Small Medium Large or X-Large Breast Shields and Flanges](https://m.media-amazon.com/images/I/21GhPykYwFL.jpg)**Spectra - Duckbill Valve Replacement for Breast Milk Pump (Pack of 4) - Fits Small Medium Large or X-Large Breast Shields and Flanges**SPECTRA**$27.54**4.7★**▲ 96%**](https://www.amazon.com/dp/B0F67KS97C) [![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](https://m.media-amazon.com/images/I/41CFO0+PzqL.jpg)**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**$12.50**4.7★**▲ 21%**](https://www.amazon.com/dp/B08Q7CL35R)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — -11.6% search growth over the last 90 days.

30K20KSpike '24Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay

Peak months: Sep · busiest ÷ quietest = 3.2×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Quality-Overall**19%

*“Good quality”*

**Size-Overall**16%

*“Exact fit”*

**Ease Of Use**11%

*“Very helpful and easy to use”*

**Ease Of Cleaning**11%

*“easy to clean”*

**Value For Money**8%

*“great value at a nice price”*

**Color**7%

*“Love the color”*

**Compatibility-Overall**5%

*“There were compatible with my spectra S1”*

**Durability**5%

*“Great quality and durable”*

**Maintenance And Repair**3%

*“so I like keeping replacements on hand”*

**Washability**2%

*“plenty of them so I can have one sitting to be washed”*

### **What buyers complain about **

**Quality-Overall**22%

*“Bad quality”*

**Durability**15%

*“Not durable at all”*

**Ease Of Use**15%

*“am unable to use it”*

**Size-Overall**7%

*“They are a little loose”*

**Leak-Proof**6%

*“Leaky”*

**Value For Money**5%

*“Not a good deal”*

**Product Condition**5%

*“The packaging appeared brand new”*

**Functionality-Overall**4%

*“Don't work well”*

**Noise Level**3%

*“make an irritating clicking sound”*

**Defective Material/Parts**2%

*“Defective”*

### **Top return reasons **

**Size-Overall**39%

**Functionality-Overall**11%

**Defective Material/Parts**9%

**Advertised Vs Actual Product**8%

**Compatibility-Overall**6%

**Quality-Overall**5%

**Product Condition**5%

**Value For Money**4%

**Leak-Proof**3%

**Width**3%