AstralPool - Atlas Pump Pre-filter Knob (Position 1) - 4405011601

AstralPool – Atlas Pump Pre-filter Knob (Position 1)

This is the genuine AstralPool pre-filter knob for the Atlas Pump With Pre-filter range. Seated at position 1 in the official Fluidra exploded-view diagram, it is the locking closure that secures the pre-filter cover to the pump body, keeping the housing sealed under operating pressure and allowing quick, tool-free access to the pre-filter basket for routine cleaning and inspection.

Compatibility

Designed specifically for the AstralPool Atlas Pump With Pre-filter (parent model ATPN0452LX) and its variants within the Atlas pump family. Always cross-reference your pump’s model label before ordering to confirm fitment — this knob is not a universal part and is not interchangeable with other AstralPool pump families.

Why Genuine Matters

A worn, cracked, or poorly fitting knob compromises the pre-filter seal, which can introduce air into the suction line, disrupt self-priming, and place unnecessary stress on the mechanical seal and motor. Using a genuine AstralPool replacement guarantees the correct thread profile, material grade, and dimensional tolerances to maintain a reliable, water-tight closure every time.

Installation

Switch off and isolate the pump before replacing this part. Unscrew the old knob, transfer any associated cover or gasket components if not included, seat the new knob squarely onto the pre-filter cover, and hand-tighten firmly — do not over-torque. Refill the pre-filter with water before restarting the pump to ensure proper priming.