Is angle stop valve 1/2 inch x 3/8 inch profitable to sell on Amazon United States?

The niche generates $75K/yr across 42 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -11.6%. Flapen's verdict: Skip it (47/100).

How competitive is the angle stop valve 1/2 inch x 3/8 inch niche?

19 brands and 91 sellers compete. The top 5 products take 46% of clicks and top 5 brands hold 72% of demand.

What do buyers complain about in angle stop valve 1/2 inch x 3/8 inch?

Top complaints mined from reviews: Leak-Proof, Quality-Overall, Advertised Vs Actual Product. The return rate is 3.0%.

When does demand for angle stop valve 1/2 inch x 3/8 inch peak?

Demand is steady year-round — the busiest month runs 1.2× the quietest.

What does it cost to enter the angle stop valve 1/2 inch x 3/8 inch niche?

Listings span $7.01–$75.67; the average listing price is $23.57 (sweet spot $15–$100). The average incumbent carries 334 reviews — the moat a new listing must climb.

angle stop valve 1/2 inch x 3/8 inch

Skip it

A small market ($75K/yr) — this niche doesn't clear our bar today.

Avg price

Incredible$23.57

avg listing price — sweet spot $15–$100

Price range

Great$7.01–$75.67

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

Review moat

Great333.71

avg incumbent reviews — the moat a new listing must climb

Competition

Good46%

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

Conversion

Good4.9%

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

Brand share

Good72%

top-5 brand share — brands hold most of the demand

Returns

Good3.0%

return rate — above 5% kills the launch gate

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Market size

Bad$75K

$75K/yr · 65K searches

Growth

Bad-11.6%

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

According to Flapen's Amazon United States niche tracking, angle stop valve 1/2 inch x 3/8 inch is a $75K/yr Amazon United States market (65K searches/yr). The top 5 brands hold 72% of demand. Verdict: Skip it — 47/100.

Data updated Jul 29, 2026 · scored weekly · How we score niches

angle stop valve 1/2 inch x 3/8 inch market data

Units sold / yr: 4K–5K; avg 100–250/product
Revenue / yr: $94K–$118K; units × avg price
Conversion rate: 4.9%
Avg BSR: #519
Page quality: 0%
Prime: 95%
Sponsored: 64%
Out of stock: 0.2%
Avg brand age: 49 months
Avg seller age: 162 days

Competition & brand share

The top 5 products take 46% of clicks — established leaders, but buyers still shop beyond them.

Brands

19 rising

Sellers

Top-5 brand share

72%

Top 20: 100%

Top-5 click share

46%

Top 20: 82%

Open market

22%

BrassCraft30%
EFIELD13%
GUOFIS13%
PROCURU10%
Minimprover7%
PXZBLG6%

Demand & seasonality

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

No pronounced peak months · busiest ÷ quietest = 1.2×

Open Trend

Top angle stop valve 1/2 inch x 3/8 inch search terms

1/4 turn shut off valve21K/yr -2.1%2.7% conv.
1/2 compression shut off valve8K/yr +3.8%5.7% conv.
angle stops5K/yr +7.9%6.8% conv.
brasscraft 1/4 turn angle valve7K/yr -19.9%4.6% conv.
brasscraft5K/yr +13.1%0.7% conv.
1/2 valve shut off4K/yr +9.3%2.1% conv.
1/2 inch shut off valve4K/yr +10.1%2.0% conv.
1/2 angle stop valve3K/yr -29.2%3.7% conv.
1/2 x 3/8 angle stop valve3K/yr -69.6%4.6% conv.
brass craft shut off valve4K/yr -91.7%1.2% conv.

All search terms

Top angle stop valve 1/2 inch x 3/8 inch 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.

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

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

(4-Pack) BrassCraft G2CR19L1X 1/2-in Nominal Comp x 3/8-in OD Outlet Chrome Plated Brass 1/4-Turn Angle Stop Valve Less Outlet Sleeve/Nut (4-Pack)

BrassCraft$34.054.7★872 rev

BrassCraft G2CR19X C1 1/2 in. NOM Comp Inlet x 3/8 in. OD Compression Outlet Chrome Plated Brass 1/4 Turn Angle Valve

BrassCraft$8.664.6★711 rev

[10-Pack] PROCURU Heavy Duty Angle Stop Valve 1/2 Nominal (5/8 OD) Compression x 3/8 OD 1/4-Turn Operation (PCAS12-10P)

PROCURU$44.514.6★315 rev

10PCS EFIELD Angle Stop Valve 1/2 Nominal (5/8 OD) Compression x 3/8 OD

EFIELD$38.494.8★460 rev

10 Pack GUOFIS Angle Compression Stop Valve 1/4 Turn Water Shut Off Valve

GUOFIS$38.194.8★276 rev

Newest

by launch date

2 Pack 1/2 Mini Ball Valve 304 Stainless Steel Valve NPT Female x Male Thread Shut-Off Valves for Small Compact Space (2 1/2 Inch)

SKLSSVF$14.63119 rev

11mo ago

VEVOR 10-Pack Angle Stop Valve 1/4 Turn Water Shut Off Valves 1/2 Nominal (5/8 OD) Compression Inlet x 3/8 OD Compression Outlet Shutoff Valve for Bathroom Kitchen Toilet Shower Plumbing

VEVOR$32.9025 rev

1y ago

2 Pack Stop Valve 1/2 Nominal (5/8 OD Comp.) Angle 3/8 OD Compression

PXZBLG$13.86105 rev

2y ago

Angle Stop Valve 1/2 Nominal (5/8 OD Comp.) Angle 3/8 OD Compression

PXZBLG$7.2881 rev

2y ago

10PC HeSun 1/2 PEX-B Crimp x 3/8 OD Compression Angle Stop Valve

HeSun$29.86356 rev

2y ago

What buyers say about angle stop valve 1/2 inch x 3/8 inch

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

What buyers love

Quality-Overall26%

“Quality is fair”

Value For Money14%

“Good price”

Assembly/Installation13%

“Easy install”

Advertised Vs Actual Product8%

“As advertised”

Leak-Proof8%

“Hasn't leaked a drop”

Ease Of Use5%

“Easy peasy”

Pressure4%

“Valves work fine”

Size-Overall4%

“Excellent fit”

Efficiency4%

“Very efficient”

Functionality-Overall2%

“Worked as expected and reasonably priced”

What buyers complain about

Leak-Proof40%

“Leaking valve”

Quality-Overall25%

“The quality of the threads is poor”

Advertised Vs Actual Product6%

“Did not work for me as advertised”

Size-Overall4%

“This does *NOT* fit regular 1/2 copper pipe”

Functionality-Overall3%

“ferrules from an existing leaving valve they dont work well”

Durability2%

“it will just break or crack”

Product Condition1%

“it had been previously returned”

Certifications1%

“Beware - Not UPC Certified”

Connectivity-Overall1%

“Bad quality, leaking around connection”

Rusts/Corrodes1%

“The ball corrodes”

Top return reasons

Size-Overall56%

Advertised Vs Actual Product8%

Compatibility-Overall7%

Leak-Proof5%

Defective Material/Parts5%

Value For Money4%

Connectivity-Overall3%

Quality-Overall3%

Functionality-Overall3%

Assembly/Installation1%

Common questions

Is angle stop valve 1/2 inch x 3/8 inch profitable to sell on Amazon United States?: The niche generates $75K/yr across 42 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -11.6%. Flapen's verdict: Skip it (47/100).
How competitive is the angle stop valve 1/2 inch x 3/8 inch niche?: 19 brands and 91 sellers compete. The top 5 products take 46% of clicks and top 5 brands hold 72% of demand.
What do buyers complain about in angle stop valve 1/2 inch x 3/8 inch?: Top complaints mined from reviews: Leak-Proof, Quality-Overall, Advertised Vs Actual Product. The return rate is 3.0%.
When does demand for angle stop valve 1/2 inch x 3/8 inch peak?: Demand is steady year-round — the busiest month runs 1.2× the quietest.
What does it cost to enter the angle stop valve 1/2 inch x 3/8 inch niche?: Listings span $7.01–$75.67; the average listing price is $23.57 (sweet spot $15–$100). The average incumbent carries 334 reviews — the moat a new listing must climb.

angle stop valve 1/2 inch x 3/8 inch

angle stop valve 1/2 inch x 3/8 inch market data

Competition & brand share

Demand & seasonality

Top angle stop valve 1/2 inch x 3/8 inch search terms

Top angle stop valve 1/2 inch x 3/8 inch products on Amazon

Top sellers

Newest

Trending

What buyers say about angle stop valve 1/2 inch x 3/8 inch

What buyers love

What buyers complain about

Top return reasons

Common questions

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