15mm isolation valve
Skip itPrices mostly outside the sweet spot ($4.10–$13.65) — this niche doesn't clear our bar today.
Review moat
Great226.32avg incumbent reviews — the moat a new listing must climb
Returns
Great1.3%return rate — above 5% kills the launch gate
Conversion
Great9.4%search→purchase rate — share of searches ending in a sale
Competition
Okay64%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Brand share
Okay86%top-5 brand share — brands hold most of the demand
Avg price
Bad£7.90avg listing price — sweet spot $15–$100
Growth
Bad-18.4%90-day search growth — must beat 0% to launch
Market size
Bad£40K£40K/yr · 54K searches
Price range
Bad£4.10–£13.65cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, 15mm isolation valve is a £40K/yr Amazon United Kingdom market (54K searches/yr). The top 5 brands hold 86% of demand. Verdict: Skip it — 39/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
15mm isolation valve market data
- Units sold / yr
- 5K–6K
- avg 100–250/product
- Revenue / yr
- £40K–£47K
- units × avg price
- Conversion rate
- 9.4%
- Avg BSR
- #59
- Page quality
- 0%
- Prime
- 91%
- Sponsored
- 64%
- Out of stock
- 2.5%
- Avg brand age
- 51 months
- Avg seller age
- 164 days
Competition & brand share
The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.Brands
13 rising
Sellers
18
Top-5 brand share
86%
Top 20: 100%
Top-5 click share
64%
Top 20: 98%
Open market
11%
- Pipestation28%
- 22.5 Team Controls24%
- Reeds23%
- PlumbEZ6%
- AIGHER5%
- VANCOCO4%
- Open — no brand owns it (7 brands, 11%)
Demand
Weekly Amazon search volume, last 16 weeks — -18.4% search growth over the last 90 days.Top 15mm isolation valve search terms
- 15mm isolation valve27K/yr
- isolation valve19K/yr
- water shut off valve4K/yr
- full bore isolating valve 15mm4K/yr
Top 15mm isolation valve 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.
All 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
2 x 15mm Isolation Valves Reeds WRAS Approved | Brass Ball Valve Shut Off Tap for Plumbing
Reeds£5.384.6★806 rev
TC 15mm Compression Isolation Valve with Black Lever Handle Thumb Turn Bolofix Isolating Valve WRAS Approved- Pack of 2
22.5 Team Controls£5.994.6★79 rev
Pipestation Isolation Valve 15mm (2 Pack) | 15mm Isolation Valves | WRAS Approved Plumbing Fittings | Chrome Valves Compression | Fitting Stopcock and Stop Tap Water Shut Off Valve - Easy Installation
Pipestation£5.394.6★760 rev
Pipestation 15mm Isolation Valve (2 Pack) - Isolation Valve 15mm x 1/2 - Bolofix Male Iron Flat Faced Isolator Valves for Tap Connector Flexi Pipes for Hot and Cold Water Systems - Easy Installation
Pipestation£6.394.7★983 rev
Pipestation Heavy Duty 15mm Full Bore Butterfly Valve with Red and Blue Handles Stop Tap Shut Off Stopcock Isolation Iso Bolofix T Bar
Pipestation£9.084.7★196 rev
Newest
by launch date
PlumbEZ WRAS Approved 15mm Chrome Isolation Valves Pack of 2 Compression x Compression Isolator Valve for Hot and Cold Water Plumbing
PlumbEZ£5.642 rev
Aigher 15mm Isolation Valve 2 Pack 15mm x 1/2 Bolofix Male Iron Flat Faced Isolator Valves for Flexible Tap Connector Pipes Hot and Cold Water Systems
AIGHER£6.530 rev
AIGHER 15mm Isolation Valve Brass Chrome Plated 15mm x 1/2 Inch Bolofix Male Iron Flat Faced for Hot and Cold Water 2 Pack
AIGHER£6.321 rev
HULTHOR 15mm Isolation Valve Pack Chrome Compression Shut Off Valves for Copper Pipe Plumbing Quarter Turn Water Isolation Valves for Taps Toilets & Appliances (5)
Hulthor£9.417 rev
PlumbEZ Straight Washing Machine Valve Brass Isolation Valve 15mm x 3/4 Inch for Hot & Cold Water Supply Compact Appliance Plumbing Fitting for Washing Machines & Dishwashers
PlumbEZ£4.5226 rev
Trending
90-day click momentumPlumbEZ WRAS Approved 15mm Chrome Isolation Valves Pack of 2 Compression x Compression Isolator Valve for Hot and Cold Water Plumbing
PlumbEZ£5.643.0★
Aigher 15mm Isolation Valve 2 Pack 15mm x 1/2 Bolofix Male Iron Flat Faced Isolator Valves for Flexible Tap Connector Pipes Hot and Cold Water Systems
AIGHER£6.530.0★
AIGHER 15mm Isolation Valve Brass Chrome Plated 15mm x 1/2 Inch Bolofix Male Iron Flat Faced for Hot and Cold Water 2 Pack
AIGHER£6.325.0★
HULTHOR 15mm Isolation Valve Pack Chrome Compression Shut Off Valves for Copper Pipe Plumbing Quarter Turn Water Isolation Valves for Taps Toilets & Appliances (5)
Hulthor£9.414.3★
hep 15mm Full Bore Isolating Ball O Fix Valve Straight for Tap Connector Flexi Pipes with Thumb Trun Black Lever for Hot & Cold WRAS Approved Pack of 2
hep Bringing your space to life£9.844.4★
What buyers say about 15mm isolation valve
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent product”
“As advertised”
“Good price”
“Easy fit”
“Good quality and leak free”
“Easy effective Fitting”
“Worked well”
“Decent quality materials”
“easy to use”
“Ideal valve for 15mm copper to flexible hose”
What buyers complain about
“Leaking”
“not full flow”
“Got quality shut off valve”
“NOT FITTED YET”
“tear up when trying to turn”
“Not flat faced”
“Not as described”
“Drained my system”
Top return reasons
Common questions
- Is 15mm isolation valve profitable to sell on Amazon United Kingdom?
- The niche generates £40K/yr across 22 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is -18.4%. Flapen's verdict: Skip it (39/100).
- How competitive is the 15mm isolation valve niche?
- 13 brands and 18 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 86% of demand.
- What do buyers complain about in 15mm isolation valve?
- Top complaints mined from reviews: Leak-Proof, Spray/Flow, Quality-Overall. The return rate is 1.3%.
- What does it cost to enter the 15mm isolation valve niche?
- Listings span £4.10–£13.65; the average listing price is £7.90 (sweet spot $15–$100). The average incumbent carries 226 reviews — the moat a new listing must climb.