- Compatible: Fits Intex chlorine generators and salt systems that use connectors for threaded hoses. Also fits all Intex 4000, 2500, 2000 and 1500 GPH filter pumps that use threaded hose connectors. - Replaces part numbers: A series adapter pair, 25007; B series adapter pair, 25009. - Suitable for: 1000 GPH Intex pump or when upgrading from a smaller pump to the 1500 GPH Intex pump or larger. - Connecting hoses: Used to connect threaded hoses to clamp hoses and to 1.5 inch and 1.25 inch hoses for Intex pool sets. Use scenarios: - Upgrading a pool setup from a 1000 GPH pump to a 1500 GPH pump or larger, while maintaining compatible threaded hose connections. - Replacing worn adapters on a chlorine generator or salt system that uses threaded hose connectors. - Connecting between threaded hoses and clamp hoses or between different hose sizes (1.25 and 1.5 inches) in Intex pool installations.