Aquael Ultramax Canister Filter Check Valves – Essential Spare Parts
Maintaining your Aquael Ultramax Canister Filter requires the correct spare parts to ensure optimal performance. One crucial component is the Check Valve In and Check Valve Out, which regulate water flow and maintain system efficiency.
Important: Check Your Filter’s Purchase Year!
Before purchasing a replacement check valve, it is essential to determine the year your Ultramax Canister Filter was manufactured. Pre-2021 models and Post-2021 models require different in and out check valves, and using the incorrect part may lead to incompatibility issues.
| Model | Check Valve In | Check Valve Out |
|---|---|---|
| Ultramax 1000 | Pre-2021 | Pre-2021 |
| Ultramax 1500 | Pre-2021 | Pre-2021 |
| Ultramax 2000 | Pre-2021 | Pre-2021 |
FAQ
Are these check valves compatible with pre-2021 Ultramax models?
Yes, these check valves are specifically designed for pre-2021 Ultramax 1000/1500/2000 canister filters.
Will these valves work with post-2021 Ultramax models?
Please contact customer service for compatibility information with post-2021 models.
Do these check valves come with installation instructions?
No installation instructions are included. The valves are designed for direct replacement and fit standard Ultramax filter ports.

Benjamin Black –
Replaced both in and out check valves on my 1500 model. Installation was straightforward. Filter now runs smoothly without leaks. Good quality and fits perfectly.
Caroline Short –
Fits my 2000 pre-2021 filter exactly. No issues with water flow or pressure. Satisfied with the performance and durability.
Melanie McLean –
Ordered this after noticing a leak in my canister filter. The check valves resolved the issue. Easy to install and works well with my existing setup.