1 / 4Fluval A20216 FX5 Aquastop Valve and O-Ring, 2-Piece
Piece: Fluval A20216 is an Aquastop valve and O-ring set listed for FX5 and FX6 filters. The listing says the valve helps regulate water flow and gives silicone as the material, making this a replacement part to consider when the model and part match your filter.
At a glance
- The listing identifies the part as an Aquastop valve for FX5 and FX6 filters.
- The valve is described as helping regulate water flow.
- Silicone is the listed material.
Often bought together
Pros and cons
Pros
- The stated FX5 and FX6 compatibility helps buyers identify the intended filter models.
- A water-flow regulation function is specified for this replacement part.
Technical specifications
8 specifications| Brand | Fluval |
|---|---|
| Model | A20216 |
| Listed filter fit | Aquastop valve for FX5 and FX6 filters |
| Set name | 2-Piece |
| Weight listed | 0.05 Kilograms |
|---|
| Material listed | Silicone |
|---|---|
| Colour | Black/ Red |
| EU spare part availability duration | 5 Years |
|---|
What to know before buying
Listing details to confirm
The title calls this a valve and O-ring, 2-piece set, while product details also list one item and one piece. Confirm the selected listing's supplied components and fit before ordering. The five-year spare-part availability claim is specifically for the EU.
Who is it for?
Customer reviews on Amazon
- 5 stars
82% 82% - 4 stars
9% 9% - 3 stars
4% 4% - 2 stars
3% 3% - 1 star
2% 2%
Aggregate customer ratings lean strongly towards the five-star category, but a smaller share falls into lower star categories. Without comment-level feedback, those ratings do not establish particular strengths or explain concerns. For a replacement valve, confirm compatibility and the contents discrepancy against your filter and the selected listing.
Frequently asked questions
Which filters does the listing name?
It describes the Aquastop valve as for Fluval FX5 and FX6 filters.
What does the valve do?
The listing says Aqua Stop Valves help regulate water flow.
Does the listing clearly confirm the set contents?
Not consistently. The title says valve and O-ring, 2-piece, while details state one item and one piece. Check the selected listing's contents before buying.

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