---
title: "Anti Siphon Valve — $44K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/anti-siphon-valve"
last_updated: "2026-08-09T10:59:58.242Z"
locale: en
meta:
description: "Niche score 58/100 · $44K/yr market · 46K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 58/100 · $44K/yr market · 46K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Anti Siphon Valve — $44K/yr Amazon US Niche (2026) - Flapen"
---
# **anti siphon valve**
**Worth a look**
Shows a sweet-spot price point ($19.88 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 11Growth 80Conversion 57Competition 44Returns 64Price range 85Avg price 87Brand share 60Review moat 72Quality gap 76
**Avg price**
**Great****$19.88**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$5.65–$79.61**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Great****+73.4%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****612.14**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Good****2.4%**
return rate — above 5% kills the launch gate
**Brand share**
**Good****69%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Good****4.8%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Okay****59%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Bad****$44K**
$44K/yr · 46K searches
According to Flapen's Amazon United States niche tracking, anti siphon valve is a $44K/yr Amazon United States market (46K searches/yr). The top 5 brands hold 69% of demand. Demand peaks in Apr–May–Jun. Verdict: Worth a look — 58/100.
Data updated Jul 15, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **anti siphon valve market data**
- **Units sold / yr**
- **3K–3K**
- avg 100–250/product
- **Revenue / yr**
- **$50K–$60K**
- units × avg price
- **Conversion rate**
- **4.8%**
- **Avg BSR**
- **#141**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **77%**
- **Out of stock**
- **0.9%**
- **Avg brand age**
- **73 months**
- **Avg seller age**
- **158 days**
## **Competition & brand share**
The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**17 **▼falling
**Sellers**
**61**
**Top-5 brand share**
**69%**
Top 20: 100%
**Top-5 click share**
**59%**
Top 20: 98%
**Open market**
**26%**
- Eastman22% - Orbit15% - PILISPARK14% - Ceoighe11% - LitOrange6% - SUNGATOR5%
## **Demand & seasonality**
Weekly Amazon search volume, last 61 weeks — +73.4% search growth over the last 90 days.
1K750Spike '26 seasonJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Apr, May, Jun · busiest ÷ quietest = 3.3×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/anti-siphon-valve/trend)
## **Top anti siphon valve search terms**
- **anti siphon valve**24K/yr+60.1%5.0% conv. - **anti-siphon valve**12K/yr+112.9%2.8% conv. - **anti siphon**3K/yr+47.3%5.6% conv. - **anti syphon valve**3K/yr+22.4%3.6% conv. - **antisiphon valve**2K/yr+89.2%7.3% conv. - **antisiphon**2K/yr+179.0%1.0% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/anti-siphon-valve/search-terms)
## **Top anti siphon 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.
0%10%$4K20%$9K30%$13K40%$18K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 22 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Eastman 3/4 Inch FHT x 3/4 Inch MHT Hose Bibb Anti Siphon Vacuum Breaker Brass Plumbing Fitting 20199**Eastman**$5.65**4.4★1,778 rev](https://www.amazon.com/dp/B00LEMRVIW) [2**PILISPARK Anti-Siphon Industrial-control-valves Repair Kit ASSE 1019-A Vacuum Breaker Check Valve Replacement Kits with Decorative Cover Plastic Body Plunger and O-Ring 1 Pack**PILISPARK**$9.45**4.3★75 rev](https://www.amazon.com/dp/B0G6YSLWWD) [3**Ceoighe 1 Pack Vacuum Breaker Repair Kit Replacement for VACVBKX1B Heavy Duty Metal Vacuum Breaker Replacement Kit for Traditional Anti Siphon Frost Free Sillcock Valves Anti Siphon Valve Repair Kit**Ceoighe**$12.83**4.2★322 rev](https://www.amazon.com/dp/B0D6GSWR3G) [4**1-Pack Orbit 57623 3/4 FPT 100 Series Anti-Siphon Automatic Sprinkler Valve with Flow Control**Orbit**$16.90**4.4★1,868 rev](https://www.amazon.com/dp/B00004S1V6) [5**Litorange 2 Pack Brass 3/4 Inch GHT Hose Bibb Connector Backflow Preventer Vacuum Breaker**LitOrange**$9.87**4.4★2,591 rev](https://www.amazon.com/dp/B07KTRW4KJ)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**PILISPARK Anti-Siphon Industrial-control-valves Repair Kit ASSE 1019-A Vacuum Breaker Check Valve Replacement Kits with Decorative Cover Plastic Body Plunger and O-Ring 1 Pack**PILISPARK**$9.45**75 rev5mo ago](https://www.amazon.com/dp/B0G6YSLWWD) [**Young Dance Outdoor Faucets Repair Kit ASSE 1019-A Water Hose of Home Improvement ABS Plastic Anti-Siphon Valve Repair for Vacuum Breaker Outside Faucet1 Pack**Young Dance**$10.60**69 rev5mo ago](https://www.amazon.com/dp/B0G6Z3QPQN) [**3/4 Inch Backflow Preventer Pressure Vacuum Breaker Assembly Heavy Duty Brass Sprinkler Backflow Valve for Lawn Irrigation System Garden Water Line Outdoor Anti-Siphon Protection Max 400 PSI**YEE**$79.61**35 rev8mo ago](https://www.amazon.com/dp/B0G2M9J5NX) [**PILISPARK ASSE 1019-A Outdoor Faucet Repair Kit with Teflon Tape Vacuum Breaker Replacement Kit Anti-Siphon Frost-Free Hose Bib Sillcock Valve Replacement1 Pack**PILISPARK**$9.34**162 rev11mo ago](https://www.amazon.com/dp/B0F9DHSN7X) [**3/4 720A Pressure Vacuum Breaker Heavy-Duty Brass Backflow Preventer for Irrigation Systems Outdoor Faucet Hose Bib Anti-Siphon Protection 400 PSI**Drizzlen**$75.86**29 rev11mo ago](https://www.amazon.com/dp/B0FLPW5QR6)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Young Dance Outdoor Faucets Repair Kit ASSE 1019-A Water Hose of Home Improvement ABS Plastic Anti-Siphon Valve Repair for Vacuum Breaker Outside Faucet1 Pack**Young Dance**$10.60**4.1★**▲ 113%**](https://www.amazon.com/dp/B0G6Z3QPQN) [**PILISPARK Anti-Siphon Industrial-control-valves Repair Kit ASSE 1019-A Vacuum Breaker Check Valve Replacement Kits with Decorative Cover Plastic Body Plunger and O-Ring 1 Pack**PILISPARK**$9.45**4.3★**▲ 92%**](https://www.amazon.com/dp/B0G6YSLWWD) [**Poolzilla (1 Pack) Inch Brass Anti-Siphon Control Valve - Compatible with Orbit and Other Major Brands- Easy-To-Rotate Control Handle and Full Flow-Control**Poolzilla**$31.26**3.0★**▲ 81%**](https://www.amazon.com/dp/B0D31W59HW) [**3/4 720A Pressure Vacuum Breaker Heavy-Duty Brass Backflow Preventer for Irrigation Systems Outdoor Faucet Hose Bib Anti-Siphon Protection 400 PSI**Drizzlen**$75.86**4.2★**▲ 67%**](https://www.amazon.com/dp/B0FLPW5QR6) [**Orbit 51023P 1 FPT Anti-Siphon Manual Sprinkler Valve**Orbit**$11.64**4.3★**▲ 45%**](https://www.amazon.com/dp/B00004S22K)
**~~View all trending →~~**
## **What buyers say about anti siphon valve**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**17%
*“Good quality”*
**Size-Overall**15%
*“Fits great and easy to install”*
**Leak-Proof**13%
*“It does not leak”*
**Advertised Vs Actual Product**8%
*“As advertised”*
**Value For Money**7%
*“Good Price”*
**Efficiency**4%
*“was able to make it work”*
**Assembly/Installation**4%
*“Installed in seconds”*
**Durability**3%
*“So far, durable this season”*
**Ease Of Use**2%
*“easy to follow”*
**Maintenance And Repair**2%
*“Easy and reliable repair”*
### **What buyers complain about **
**Leak-Proof**17%
*“Keeps leaking”*
**Size-Overall**16%
*“Too small”*
**Quality-Overall**7%
*“Poor quality control”*
**Assembly/Installation**5%
*“bad assembly”*
**Noise Level**4%
*“Noisy”*
**Functionality-Overall**4%
*“Does not work as expected”*
**Durability**4%
*“two failed within 36 months”*
**Value For Money**3%
*“I was able to get a less expensive one because it didn't any of the fittings on it”*
**Advertised Vs Actual Product**2%
*“Overall, it does not do what it claims”*
**Compatibility-Overall**2%
*“Does not fit asse 1019 a”*
### **Top return reasons **
**Size-Overall**60%
**Leak-Proof**9%
**Defective Material/Parts**6%
**Compatibility-Overall**6%
**Advertised Vs Actual Product**4%
**Functionality-Overall**4%
**Value For Money**2%
**Product Condition**1%
**Connectivity-Overall**1%
**Noise Level**1%
## **Common questions**
- **Is anti siphon valve profitable to sell on Amazon United States?**
- The niche generates $44K/yr across 22 tracked products. 5 of 5 products launched in the last 360 days are still selling. 90-day search growth is +73.4%. Flapen's verdict: Worth a look (58/100).
- **How competitive is the anti siphon valve niche?**
- 17 brands and 61 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 69% of demand.
- **What do buyers complain about in anti siphon valve?**
- Top complaints mined from reviews: Leak-Proof, Size-Overall, Quality-Overall. The return rate is 2.4%.
- **When does demand for anti siphon valve peak?**
- Demand peaks in Apr–May–Jun; the busiest month runs 3.3× the quietest.
- **What does it cost to enter the anti siphon valve niche?**
- Listings span $5.65–$79.61; the average listing price is $19.88 (sweet spot $15–$100). The average incumbent carries 612 reviews — the moat a new listing must climb.
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