# Fluval 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.

- [Original product page](https://aussiedealscout.com/product/fluval-a20216-fx5-aquastop-valve-o-ring)
- [View offer](https://aussiedealscout.com/visit/fluval-a20216-fx5-aquastop-valve-o-ring)
- Market: AU
- Language: en-AU
- Currency: AUD
- Brand: Fluval
- Model: A20216
- Category: Pet Supplies > Aquariums & Terrariums
- Price: 27.93 AUD
- Previous price: 42.46 AUD
- Discount: 34%
- Price checked: 2026-11-13T12:07:10.858Z
- Rating: 4.6 / 5
- Reviews: 1157

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## 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.

## 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.

## Specifications

### Identity
- Brand: Fluval
- Model: A20216
- Listed filter fit: Aquastop valve for FX5 and FX6 filters
- Set name: 2-Piece
### Dimensions and installation
- Weight listed: 0.05 Kilograms
### Materials and protection
- Material listed: Silicone
- Colour: Black/ Red
### Spare-part information
- EU spare part availability duration: 5 Years

## Before you buy

- 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.

## A good fit for

- Owners of Fluval FX5 or FX6 filters looking for the listed Aquastop valve and O-ring replacement.

## Less suited to

- Buyers who need a complete filter or a part for a different filter model.

## Customer feedback

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.

## Alternative options

- [A20236 Ribbed Hosing fit for Fluval FX2/FX4/FX6 Canister Filters \(A214, A218 and A219\), Replacement for Fluval Aquarium Filter, 13.25 Ft Hose - Suitable for Freshwater and Saltwater Aquariums](https://aussiedealscout.com/visit/fluval-a20216-fx5-aquastop-valve-o-ring)
- [Fluval Drain Valve for the Filter FX6](https://aussiedealscout.com/visit/fluval-a20216-fx5-aquastop-valve-o-ring)
- [XwaYexa A20215 Canister Filter Lid Fastener, Exact Fit for Fluval FX2, FX4, FX5, FX6 Filters, Locking Clamp Replacement for Secure Lid Seal and Leak Prevention, 8-Pack](https://aussiedealscout.com/visit/fluval-a20216-fx5-aquastop-valve-o-ring)
- [Fluval FX Spray Bar Kit, Aquarium Filter Water Aeration Accessory](https://aussiedealscout.com/visit/fluval-a20216-fx5-aquastop-valve-o-ring)
- [Dynamic Power 52L Curved Glass RGB LED Aquarium Fish Tank \| 52L capacity, curved 4mm glass, 7W RGB LED, 500L/H pump and top filter, hinged hood](https://aussiedealscout.com/visit/fluval-a20216-fx5-aquastop-valve-o-ring)
- [SIKA SikaSeal-401 Aquarium Safe Silicone Sealant, Clear, 75gr \| UV Resistant, Extreme Temperature Resistance, Ideal for Fish Tanks, Water Pumps, Glass & Aluminium Sealing](https://aussiedealscout.com/visit/fluval-a20216-fx5-aquastop-valve-o-ring)
- [driamor Advanced Aquarium Light Programmable Fish Tank Light with Blue Backlit LCD Screen, Sunrise Sunset Simulation Multi-Color Full Spectrum Light for Freshwater Planted Tank with Timer 30-45cm 14W](https://aussiedealscout.com/visit/fluval-a20216-fx5-aquastop-valve-o-ring)
- [Briny River 5PCS Aquarium Cartridge Filter Rubber Seal OE A20063 A20064 Compatible with Fluval 304 305 306 307 404 405 406 407 Canister Filter Outer Diameter 185mm Black](https://aussiedealscout.com/visit/fluval-a20216-fx5-aquastop-valve-o-ring)

## Add-ons

- [2 Pack Rim Connector Replacement for Fluval Fx4/Fx5/Fx6 Parts, High Performance Canister Filter Accessories, Hose Fitting Rim Connector and Clips Bracket Adapter Parts for Aquarium Fish Tank Filters](https://aussiedealscout.com/visit/fluval-a20216-fx5-aquastop-valve-o-ring)
- [Fluval A20221 FX5/FX6 Intake Strainer](https://aussiedealscout.com/visit/fluval-a20216-fx5-aquastop-valve-o-ring)

## Images

![Fluval A20216 FX5 Aquastop Valve and O-Ring, 2-Piece — 1](https://aussiedealscout.com/i/tbMnmuEkq9OFPz7uZchnIqdlvakKg8yqWMv3Tvwzv09EjCYWrl5Jja3P-RO70hGgKy2yN-YxMoHyXuzn9nAxSYD6rc-lqKLBUMMG9bpzfvlhT6tAO5bshhfE.jpg)

![Fluval A20216 FX5 Aquastop Valve and O-Ring, 2-Piece — 2](https://aussiedealscout.com/i/hmyNoYy5DDKIx-3hPVWc7z2xVGZelACraxBLFKIND0HYI-932Wawp_5QzheyrSiIH_YbAS5mIQc43_3Khg1qOKjXJUEqrN5KxfAY5tYc6jdZkSok5cTsB6Yf.jpg)

![Fluval A20216 FX5 Aquastop Valve and O-Ring, 2-Piece — 3](https://aussiedealscout.com/i/BTMqJ125Q7scalA95DRZIhVN3g0mwDEy-0VIXHHXkR5XUPQPnymfvHWdKYYqccT_xeN9NrqBcWL9YqhVU4KuPyqGIQvpIxnzbLHZI8hyHcVqsMMArC8mhr3v.jpg)

![Fluval A20216 FX5 Aquastop Valve and O-Ring, 2-Piece — 4](https://aussiedealscout.com/i/0WFi0YVjbUiI--Ivx6D3OLwqKUZuQLq_Y9XByjFAYi5Xa8AGKs4O0Wo-wjWCnS6f-ltwM0DmIrpSP9xh8TZSqcKsU1ORWW_BRJK_QOR1hrq5Caoh1uSIiR91.jpg)