Equipment installation in PVC-liner pools differs from concrete/tiled pools: watertightness is preserved by clamping a gasketed flange between the liner's two layers rather than penetrating it.
Liner-compatible products typically have a wider flange diameter and a liner-specific gasket set compared to the standard model; mixing up the standard (concrete-pool) version can tear the liner or cause leaks.
When specifying equipment for a liner-type pool project, confirm both that the nozzle/grille is labeled 'liner-compatible' and that the gasket set included matches the liner's thickness.
Browse products using Liner-Compatible Pool Equipment
Inlet & Vacuum Nozzles, Main Drain Grilles, Stainless Ladders