This is the genuine Fluidra AstralPool split lid nut for the Cantabric top-mount sand filter, \u00d8750 mm with a 2″ top-outlet valve. It is the large threaded retaining nut that clamps the filter lid onto the tank body, forming the primary pressure-bearing closure of the filter vessel. Replacing a worn or damaged nut restores a secure, leak-free seal and safe operation of your filtration system.<\/p>\n
Designed exclusively for the AstralPool Cantabric Top \u00d8750 mm sand filter with a 2″ top-outlet valve (Fluidra product reference 23866, rated at 21,000 l\/h). This part is not suitable for smaller Cantabric diameters or for side-outlet variants \u2013 always verify your filter’s diameter and valve position before ordering.<\/p>\n
As an original Fluidra AstralPool spare part, this split lid nut is manufactured to the same tolerances and material specification as the factory-fitted component. A correctly sized and properly manufactured lid nut applies even, uniform clamping force around the entire lid seal, preventing pressure leaks and protecting the filter tank from stress cracking caused by uneven loading.<\/p>\n
The split nut design allows it to be fitted or removed without dismantling the surrounding pipework, making filter lid maintenance more straightforward. Shut down the pump, relieve system pressure via the air-relief valve, and unscrew the old nut before fitting the replacement. If the lid O-ring shows any signs of wear, it is good practice to replace it at the same time.<\/p>","protected":false},"excerpt":{"rendered":"