AstralPool - Sand Filter Diffuser Assembly Ø 500 mm - SP-04-0445

AstralPool – sand filter diffuser assembly Ø 500 mm

This genuine AstralPool diffuser assembly is an internal replacement component designed for AstralPool sand filters with a 500 mm vessel diameter. The diffuser sits at the top of the filter’s internal pipe and ensures incoming pool water is distributed evenly across the entire sand or glass media bed, maintaining consistent filtration performance and preventing channelling.

Compatibility

This diffuser assembly is designed for AstralPool Ø 500 mm laminated sand filters, including the Atlas Ø 500 mm series. Always cross-reference your filter model and exploded-parts diagram before ordering, as diffuser designs vary across AstralPool filter families and diameter sizes — the D. 500 designation refers specifically to filters with a 500 mm vessel diameter.

Why genuine matters

As an OEM AstralPool part, this assembly is manufactured to the exact tolerances of the original component, ensuring a precise fit within the filter body and correct water distribution across the filtration bed. Third-party alternatives may not replicate the slot dimensions or pipe geometry, leading to uneven flow, reduced filtration efficiency, or premature wear of the filter media.

Installation

The diffuser assembly is accessed through the filter lid after draining and depressurising the filter tank. The component connects to the central standpipe inside the filter vessel. Installation is straightforward for a qualified pool technician; always ensure the filter is fully depressurised and isolated from the pump before opening the lid or handling internal components.