AstralPool - Big Discovery Pump Pre-Filter Lid with Gasket - 4405010553

AstralPool – Big Discovery Pump Pre-Filter Lid with Gasket

This is the genuine AstralPool replacement pre-filter lid and gasket assembly for the Big Discovery pump (model DY550T60). It corresponds to position 2 in the official Fluidra exploded-view diagram and consists of the transparent cover that seals the pre-filter housing together with its sealing gasket, ensuring a watertight closure every time the basket is inspected or cleaned.

Compatibility

This part is designed exclusively for the AstralPool Big Discovery pump, model reference DY550T60. Always verify your pump’s model code before ordering, as the Big Discovery uses a dedicated lid profile that is not interchangeable with other AstralPool pump families such as the Victoria Plus or Sprint.

Why Genuine Matters

An original AstralPool lid and gasket are manufactured to the exact tolerances of the pump housing, so the cover seats squarely and the gasket compresses evenly. A correctly sealing pre-filter lid prevents air ingestion, maintains prime, and protects the mechanical seal and motor from running dry — significantly extending the pump’s service life.

Installation

Switch off and isolate the pump from the power supply before removing the existing lid. Inspect the gasket seat for debris or deformation, fit the new gasket into the channel, and secure the lid using all four closures evenly to avoid uneven compression. Refill the pre-filter with water before restarting the pump to ensure immediate prime.