This part is a replacement cap drain valve for select Hot Spring Spa Pools and Endless Pool models.
For your primary and secondary drain valves, this 3/4" black cap is used to plug both.
Secure the contents in the valve with the washer that is included.
Compatible with 1993 to current Hot Spring Highlife, Hot Spot, Limelight, Freeflow, Solana, and Tiger River spa models and Endless Pool models.