AstralPool - Diffuser Assembly 90 mm for Europe Filter Ø1800 - 4404160052

AstralPool – Diffuser Assembly 90 mm for Europe Filter Ø1800

This is the genuine AstralPool replacement diffuser assembly, designed specifically for the Europe Filter Ø1800 mm with a 90 mm inlet connection, rated to 1.0 m media bed depth and 2.5 kg/cm² maximum working pressure (parent filter SKU 21503). The diffuser sits at the top of the filter vessel (position 27 in the official Fluidra exploded-view diagram) and distributes incoming pool water evenly across the entire surface of the filter media bed. Even distribution is essential for consistent filtration efficiency and prevents channelling, which can allow unfiltered water to bypass the media.

Compatibility

This diffuser assembly is a direct OEM replacement for the AstralPool Europe Filter Ø1800–90 mm, 1.0 m media bed, 2.5 kg/cm² (Fluidra part SKU 21503). It is engineered to match the exact bore, flange dimensions, and material specification of the original component. Always cross-reference your filter’s model number and the exploded-view position (27) before ordering to confirm fitment — it is not interchangeable with other Europe Filter diameters or inlet sizes.

Why Genuine Matters

Aftermarket diffusers may differ in bore diameter, flange geometry, or material grade, leading to poor flow distribution, premature wear, or pressure faults. This assembly is manufactured to Fluidra/AstralPool’s original tolerances in high-resistance polypropylene or PVC, ensuring a correct seal, rated pressure compliance up to 2.5 kg/cm², and a service life in keeping with the filter vessel itself. Using a genuine part also keeps your equipment warranty valid.

Installation

Replacement of the diffuser assembly requires depressurising and draining the filter, removing the filter lid, and extracting the existing diffuser from its seating before fitting the new unit. The work is straightforward for a qualified pool technician with access to the official Fluidra exploded-view diagram for the Europe Filter Ø1800–90 mm. Ensure all mating gaskets and seals are inspected and replaced if necessary before returning the filter to service.