The AKU1831 filter cartridge is a key element for keeping the water in your hot tub or pool clean and hygienic. It captures mechanical impurities, grease, sediment and fine particles, thereby extending the life of the water, reducing chemical consumption and protecting technical parts from clogging. It is suitable for various types of domestic hot tubs and swim spas. We recommend replacing the filter after 12 months of operation, as the filter fabric degrades over time.
Compatibility
Suitable for hot tubs of the brands Wellis, Hanscraft HC, OKA, Celtic Spas, Plug & Play and Liberty by Vision Spa (173124). Corresponds to codes: Darlly 40506, Unicel C-4950 and SC706, Pleatco PRB50-IN.
Cleaning
Remove the cartridge from the skimmer according to the manufacturer’s instructions. For cleaning we recommend the Cartridge Filter Cleaner Regenerator, which dissolves organic impurities and regenerates the fabric. Alternatively, rinse the cartridge with a strong stream of water. After cleaning, return the filter to the skimmer.
Technical parameters
- Length: 340 mm
- Diameter: 130 mm
- Filter length: 25-34.9 cm
- Top opening: open (20-50 mm)
- Bottom opening: open (20-50 mm)
- Darlly: 40506; Unicel: C-4950, SC706; Pleatco: PRB50-IN
- Manufacturer: Wellis








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