Dolphin pool cleaner fine filtration basket for spring

The Fine Filter Basket (S1) Ref. 9991459-ASSY is the original filtration cartridge for a wide range of Dolphin pool cleaners and the Pentair Prowler 910. It is designed to retain fine particles such as dust, pollen, light sand, and organic debris, improving water clarity after routine cleaning or following windy and rainy weather. Its basket-style design facilitates removal from the top of the robot and allows for quick rinsing with a hose.

The S1 (fine) filtration level is ideal for daily use or for combining with ultrafine baskets when a more polished finish is required. Made from highly durable technical plastics, it maintains the cartridge's shape over multiple work cycles and withstands suction forces without deforming. To preserve the pool cleaner's performance, empty the basket after each cycle, rinse the filter walls from the inside out, and check that no hair or fibers remain trapped in the corners.

If you notice that the robot is losing power, leaving debris floating, or displaying the dirty filter warning more frequently, replacing the basket with a new one usually restores flow rate and fine-particle capture capacity. Check the compatible models below and always choose an original replacement part to ensure a perfect fit and proper sealing.