1 Stainless Steel Check Valve for CO2, Carbon Dioxide Diffuser to Prevent Gas Backflow, Check Valve Fitting 4X6mm
Quick answer
Is $13.25 a good price for 1 Stainless Steel Check Valve for CO2, Carbon Dioxide Diffuser to…?
Too early to tell: DipScout has tracked this price for 1 day, and comparing it with a typical price takes at least 7 days. Tracked since Oct 27, 2026, it ranged from $12.45 to $13.25.
$13.25
Today it costs $13.25 on AliExpress. Since Oct 27, 2026, when we started tracking it, it ranged from $12.45 to $13.25. We haven't tracked it long enough yet to say whether it's on sale.
We have tracked this product for 1 day; confirming a drop takes at least 7 days. The store advertises "was $37.86", but that is the store's own claim; we only state discounts our price history proves.
View on AliExpressThe price above is the last recorded reading, not a live checkout lookup.
Price history
Today$13.25highest ever seen
Lowest$12.45Oct 27 to Oct 28
Highest$13.25since Oct 28
Tracked since Oct 27 · 1 changeHover over the chart to see each price.Tap the chart to see each price.
See every price change
| When | Price | Change |
|---|---|---|
| Oct 28, 10:03 UTC | $13.25 | +6% |
| Oct 27, 12:54 UTC | $12.45 | start |
| Store | ZRDR Aquarium Equipment Store |
|---|---|
| Product rating | — |
| Store rating | — |
| AliExpress category | Home & Garden › Pet Products |
| Recorded readings | 2 |
| First seen | 10/27/2026 |
| Last reading | 10/28/2026, 10:03:18 AM UTC |