This retro kit is a replacement Hartford loop assembly for select Hot Spring hot tubs and Endless Pool models. The thick wall of the hole is used to replace the air check valve.
Cement or PVC primer should be used to secure the fitments properly in your plumbing system. Compatible with 1994 to current Hot Spring Highlife, Hot Spot, Limelight, Solana, and Tiger River spa models and Endless Pool models.
*Check specs section for full list of compatible models and years.
