Description
Astralpool prefilter lid and gasket 4405010401
The Astralpool prefilter lid and gasket 4405010401 is a complete replacement set for the transparent pump lid and its sealing ring on selected Astralpool pool pumps. It restores a clear view of the strainer basket and a watertight seal on the prefilter, helping the pump to prime correctly and operate without air leaks.
Main features of the prefilter lid and gasket set
- Original style transparent prefilter lid with matching gasket.
- Designed for Astralpool circulation pumps that specify code 4405010401.
- Clear cover for easy visual inspection of water level and basket condition.
- New sealing ring to ensure a reliable, watertight closure of the prefilter.
Function in the filtration system
The prefilter lid closes the basket compartment on the suction side of the pump. Together with the gasket, it must remain airtight so the pump can draw water from the skimmers without pulling in air. A clean, undamaged lid and a supple gasket make priming easier, reduce noise and protect the pump from running dry.
- Seals the prefilter housing to prevent air from entering the suction line.
- Allows quick checking of basket loading and water level through the clear cover.
- Helps the pump maintain stable flow and quiet operation.
Compatibility and typical use
The Astralpool prefilter lid and gasket 4405010401 is intended for use on compatible Astralpool pool pumps that list this reference for the lid assembly. It follows the original diameter, thread and contact surface of the factory part, so it can be fitted directly in place of a worn or cracked cover.
- Suitable for Astralpool pumps that specify reference 4405010401 as prefilter lid.
- Ideal as a replacement when the existing lid is opaque, cracked or difficult to close.
- Recommended whenever the gasket has flattened, hardened or shows signs of leakage.
When to replace the lid and gasket
Over time, exposure to sun, chemicals and mechanical stress can affect the clarity and strength of the lid and the elasticity of the gasket. Replacing both together ensures that visibility and sealing are fully restored.
- Cracks, star shaped marks or chips visible in the transparent cover.
- Lid that has become cloudy, making it hard to see the basket or water level.
- Persistent drips or air bubbles in the lid even after tightening and cleaning.
- Gasket that appears flattened, brittle or damaged when the lid is removed.
Installation and good practice
Fitting the Astralpool prefilter lid and gasket 4405010401 is straightforward and usually done during routine cleaning of the strainer basket. Correct assembly and handling will help the new parts last for many seasons.
- Switch off the pump before opening the prefilter lid.
- Remove the old lid, take out the gasket and clean the sealing surface on the housing.
- Place the new gasket evenly in its seat, ensuring it is not twisted or pinched.
- Fit the new transparent lid and tighten the locking system by hand only, without tools.
- Optionally use a thin film of silicone based lubricant suitable for pool gaskets to reduce friction and wear.
After reassembly, restart the filtration system and check that the pump primes quickly and that no air is drawn into the prefilter during normal operation.
