1PCS Bathroom Check Valves Pipe Ventilator Air Valve Backdraft Damper Duct Preventer Backflow Back Draft Damper Home Improvement
$7.15
Today it costs $7.15 on AliExpress. Since Oct 22, 2026, when we started tracking it, the price hasn't changed. We haven't tracked it long enough yet to say whether it's on sale.
We have tracked this product for less than a day; confirming a drop takes at least 3 days.
View on AliExpressAffiliate link: we earn a commission on completed purchases, and the price is the same with or without our code. The price above is the last recorded reading, not a live checkout lookup.
Price history
$7.15
We started tracking this price on Oct 22. The chart takes shape over the days: we only draw prices we observed.
| Store | Shop1102752650 Store |
|---|---|
| Product rating | — |
| Store rating | — |
| AliExpress category | Home Improvement › Heating, Cooling & Vents |
| Recorded readings | 1 |
| First seen | 10/22/2026 |
| Last reading | 10/22/2026, 3:16:48 PM UTC |