---
title: "grey water hose — Niche Verdict: Worth a look (54/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/grey-water-hose"
last_updated: "2026-07-14T06:07:53.656Z"
locale: en
meta:
  description: "grey water hose shows low returns (0.7%), but brand-locked demand (top 5 brands take 98% of clicks) keeps it on the watch list."
  "og:description": "grey water hose shows low returns (0.7%), but brand-locked demand (top 5 brands take 98% of clicks) keeps it on the watch list."
  "og:title": "grey water hose — Niche Verdict: Worth a look (54/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **grey water hose**

**Worth a look**

Shows low returns (0.7%), but brand-locked demand (top 5 brands take 98% of clicks) keeps it on the watch list.

Market size 37Growth 96Conversion 96Competition 27Returns 97Price range 46Avg price 48Brand share 4Review moat 48Quality gap 35

**Returns**

**Incredible****0.7%**

return rate — above 6% kills the launch gate

**Growth**

**Incredible****+147.5%**

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

**Conversion**

**Incredible****13.7%**

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

**Review moat**

**Okay****1,661.88**

avg incumbent reviews — the moat a new listing must climb

**Avg price**

**Okay****$11.80**

avg listing price — sweet spot $15–$100

**Price range**

**Okay****$5.50–$23.12**

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

**Market size**

**Okay****$185K**

$185K/yr · 114K searches

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Competition**

**Okay****69%**

top-5 click share — leaders hold, buyers still browse

**Brand share**

**Bad****98%**

top-5 brand share — brand-locked demand

## **Competition**

The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**6 **▲rising

**Sellers**

**83**

**Top-5 brand share**

**98%**

**Open market**

**0%**

- Camco36% - Valterra30% - Aussio12% - Colingmill12% - TonGass8% - WKZO2% - Open — no brand owns it (0%)

## **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%$19K20%$37K30%$56K40%$74K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

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

All 17 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Camco 39463 Sewer Cap With Hose Connect Black 3/4](https://m.media-amazon.com/images/I/31Hm4J0AddL.jpg)**Camco 39463 Sewer Cap With Hose Connect Black 3/4**Camco**$6.86**4.8★6,839 rev](https://www.amazon.com/dp/B000BQKBP2) [2![Valterra 1216.1015 Products Inc. T1020 3 Black Termination Cap with Bayonet Hook](https://m.media-amazon.com/images/I/41h3yI+uGbL.jpg)**Valterra 1216.1015 Products Inc. T1020 3 Black Termination Cap with Bayonet Hook**Valterra**$5.50**4.8★3,830 rev](https://www.amazon.com/dp/B0006N5RW2) [3![Aussio (2-Pack Black T1020-1 Waste Valve Cap with Bayonet Hook 3 with Capped 3/4 GHT RV Sewer Cap](https://m.media-amazon.com/images/I/41OoaISawKL.jpg)**Aussio (2-Pack Black T1020-1 Waste Valve Cap with Bayonet Hook 3 with Capped 3/4 GHT RV Sewer Cap**Aussio**$15.13**4.2★250 rev](https://www.amazon.com/dp/B0D1R68PXM) [4![Valterra T1020-1 Waste Valve Cap - 3 with Capped 3/4 GHT Black](https://m.media-amazon.com/images/I/41GscmuLXIL.jpg)**Valterra T1020-1 Waste Valve Cap - 3 with Capped 3/4 GHT Black**Valterra**$7.33**4.7★5,714 rev](https://www.amazon.com/dp/B0006N5RYK) [5![TonGass 3 RV Sewer Valve Cap with Handle Easy-Grip Waste Valve Cap for RV Camper & Travel Trailer Secure Seal Leak Prevention Easy to Install & Use - Black 2-Pack](https://m.media-amazon.com/images/I/41M5x6aGuaL.jpg)**TonGass 3 RV Sewer Valve Cap with Handle Easy-Grip Waste Valve Cap for RV Camper & Travel Trailer Secure Seal Leak Prevention Easy to Install & Use - Black 2-Pack**TonGass**$23.12**4.9★30 rev](https://www.amazon.com/dp/B0GCMVJQ3H)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![TonGass 3 RV Sewer Valve Cap with Handle Easy-Grip Waste Valve Cap for RV Camper & Travel Trailer Secure Seal Leak Prevention Easy to Install & Use - Black 2-Pack](https://m.media-amazon.com/images/I/41M5x6aGuaL.jpg)**TonGass 3 RV Sewer Valve Cap with Handle Easy-Grip Waste Valve Cap for RV Camper & Travel Trailer Secure Seal Leak Prevention Easy to Install & Use - Black 2-Pack**TonGass**$23.12**30 rev6mo ago](https://www.amazon.com/dp/B0GCMVJQ3H) [![WKZO Replacement RV Sewer Cap - Heavy-Duty ABS Plastic Universal Fit for Most RVs & Trailers Leak-Proof Waste Tank Cap with Secure Locking Clamp (Black 3.75)](https://m.media-amazon.com/images/I/31nF0qDAaWL.jpg)**WKZO Replacement RV Sewer Cap - Heavy-Duty ABS Plastic Universal Fit for Most RVs & Trailers Leak-Proof Waste Tank Cap with Secure Locking Clamp (Black 3.75)**WKZO**$13.32**32 rev10mo ago](https://www.amazon.com/dp/B0FN7HQ5KT) [![TonGass RV Sewer Cap with Lanyard Compatible with Camco Rhino Portable Waste Tank RV Sewer Hose Storage Cap for Camco Camper - Prevents Leaks & Spills from RVs Sewers System - Black 1-Pack](https://m.media-amazon.com/images/I/41SZt9BekEL.jpg)**TonGass RV Sewer Cap with Lanyard Compatible with Camco Rhino Portable Waste Tank RV Sewer Hose Storage Cap for Camco Camper - Prevents Leaks & Spills from RVs Sewers System - Black 1-Pack**TonGass**$9.92**31 rev11mo ago](https://www.amazon.com/dp/B0FLF3S9KP) [![Colingmill RV Sewer Valve Cap with Handle - 3 RV Sewer Cover Waste Valve Cap for Camper Trailer Easy to Install & Use(1 Pcs Black)](https://m.media-amazon.com/images/I/31UMQEm1SdL.jpg)**Colingmill RV Sewer Valve Cap with Handle - 3 RV Sewer Cover Waste Valve Cap for Camper Trailer Easy to Install & Use(1 Pcs Black)**Colingmill**$15.14**134 rev1y ago](https://www.amazon.com/dp/B0FFGVPXRP) [![Colingmill RV Sewer Valve Cap with Handle - 3 RV Sewer Cover Waste Valve Cap for Camper Trailer Easy to Install & Use(1 Pcs Clear)](https://m.media-amazon.com/images/I/414BvYDFTkL.jpg)**Colingmill RV Sewer Valve Cap with Handle - 3 RV Sewer Cover Waste Valve Cap for Camper Trailer Easy to Install & Use(1 Pcs Clear)**Colingmill**$14.95**134 rev1y ago](https://www.amazon.com/dp/B0FFGX27LN)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![TonGass RV Sewer Cap with Lanyard Compatible with Camco Rhino Portable Waste Tank RV Sewer Hose Storage Cap for Camco Camper - Prevents Leaks & Spills from RVs Sewers System - Black 1-Pack](https://m.media-amazon.com/images/I/41SZt9BekEL.jpg)**TonGass RV Sewer Cap with Lanyard Compatible with Camco Rhino Portable Waste Tank RV Sewer Hose Storage Cap for Camco Camper - Prevents Leaks & Spills from RVs Sewers System - Black 1-Pack**TonGass**$9.92**4.9★**▲ 150%**](https://www.amazon.com/dp/B0FLF3S9KP) [![TonGass 3 RV Sewer Valve Cap with Handle Easy-Grip Waste Valve Cap for RV Camper & Travel Trailer Secure Seal Leak Prevention Easy to Install & Use - Black 2-Pack](https://m.media-amazon.com/images/I/41M5x6aGuaL.jpg)**TonGass 3 RV Sewer Valve Cap with Handle Easy-Grip Waste Valve Cap for RV Camper & Travel Trailer Secure Seal Leak Prevention Easy to Install & Use - Black 2-Pack**TonGass**$23.12**4.9★**▲ 146%**](https://www.amazon.com/dp/B0GCMVJQ3H) [![Colingmill RV Sewer Valve Cap with Handle - 3 RV Sewer Cover Waste Valve Cap for Camper Trailer Easy to Install & Use(1 Pcs Clear)](https://m.media-amazon.com/images/I/414BvYDFTkL.jpg)**Colingmill RV Sewer Valve Cap with Handle - 3 RV Sewer Cover Waste Valve Cap for Camper Trailer Easy to Install & Use(1 Pcs Clear)**Colingmill**$14.95**3.8★**▲ 120%**](https://www.amazon.com/dp/B0FFGX27LN) [![WKZO Replacement RV Sewer Cap - Heavy-Duty ABS Plastic Universal Fit for Most RVs & Trailers Leak-Proof Waste Tank Cap with Secure Locking Clamp (Black 3.75)](https://m.media-amazon.com/images/I/31nF0qDAaWL.jpg)**WKZO Replacement RV Sewer Cap - Heavy-Duty ABS Plastic Universal Fit for Most RVs & Trailers Leak-Proof Waste Tank Cap with Secure Locking Clamp (Black 3.75)**WKZO**$13.32**4.2★**▲ 34%**](https://www.amazon.com/dp/B0FN7HQ5KT) [![Camco Rhino Flex Cap Bayonet and Elbow Cap - Seals Both Ends of Your Sewer Hose to Form a Odor Tight Connection While Storing (2 Pack) (39753)](https://m.media-amazon.com/images/I/31SWytlXdTL.jpg)**Camco Rhino Flex Cap Bayonet and Elbow Cap - Seals Both Ends of Your Sewer Hose to Form a Odor Tight Connection While Storing (2 Pack) (39753)**Camco**$8.76**4.5★**▲ 24%**](https://www.amazon.com/dp/B003VASR4M)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — +147.5% search growth over the last 90 days.

4K3KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay

Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 3.4×

## **Reviews**

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

### **What buyers love **

**Size-Overall**32%

*“Awesome fit”*

**Quality-Overall**10%

*“No complaints”*

**Advertised Vs Actual Product**9%

*“As advertised”*

**Ease Of Use**8%

*“Easy to use”*

**Value For Money**8%

*“Totally worth it”*

**Efficiency**4%

*“Cap works great”*

**Leak-Proof**4%

*“it is not leaking”*

**Grip**3%

*“the handles are easy to grab”*

**Design-Overall**3%

*“I like the design”*

**Strength**3%

*“Sturdy”*

### **What buyers complain about **

**Size-Overall**26%

*“Very tight fit”*

**Durability**16%

*“Break easily”*

**Ease Of Use**7%

*“Very hard to get on”*

**Quality-Overall**7%

*“Cheap product”*

**Material Quality**7%

*“Cheap Plastic”*

**Leak-Proof**6%

*“Leaks”*

**Strength**4%

*“Break easily”*

**Smell**4%

*“Cap off that stink pipe”*

**Rubber Quality**2%

*“I just don't trust rubber cords on the caps to be secure enough”*

**Compatibility-Overall**2%

*“it doesnt work with the standard universal wrenches”*

### **Top return reasons **

**Size-Overall**66%

**Compatibility-Overall**8%

**Defective Material/Parts**5%

**Advertised Vs Actual Product**4%

**Connectivity-Overall**3%

**Assembly/Installation**2%

**Value For Money**2%

**Functionality-Overall**1%

**Ease Of Use**1%

**Leak-Proof**1%