The 1¼”–2” Poppet, Spring, and Seat Kit is a complete internal repair solution for 1¼”, 1½”, and 2” reduced pressure principle backflow preventers (model 975XL and 975XL2). Designed for a full internal rebuild, this kit restores proper sealing, spring tension, and valve operation for both check valves and the relief valve. It helps maintain compliance with backflow prevention standards while extending the life and reliability of the assembly.