Fluidra - Diffuser Assembly for Artic Sand Filter Ø650 mm

Fluidra – Diffuser Assembly for Artic Sand Filter Ø650 mm

This is the genuine Fluidra replacement diffuser assembly designed specifically for the Artic series sand filter with a tank diameter of 650 mm. The diffuser sits at the top of the filter vessel and evenly distributes incoming pool water across the full surface of the filter bed, ensuring consistent filtration performance and preventing channelling through the sand or glass media.

Compatibility

This diffuser assembly is an original spare part for the Fluidra Artic (AstralPool) laminated sand filter range covering tank diameters of 500, 650, 800 and 950 mm — always verify your exact model and tank diameter before ordering. The Artic filter series features a 1 m filtration bed height, a maximum working pressure of 2.5 bar, and ACME threaded connections on the 500–950 mm diameter models.

Why Genuine Matters

Using a genuine Fluidra part guarantees a precise dimensional fit within the filter vessel and compatibility with the polypropylene collector arm system, which uses 0.3 mm slots for uniform water distribution. An ill-fitting aftermarket diffuser can cause uneven flow, premature media migration, or pressure build-up — risking damage to the filter tank or voiding any remaining warranty.

Installation

The diffuser assembly is accessed by removing the filter lid (secured with AISI-316 stainless steel screws on Artic models). Ensure the pump is switched off, the system is depressurised, and isolation valves are closed before opening the vessel. We recommend inspection of the collector arms and EPDM gaskets at the same time, replacing any worn components to restore full filtration efficiency.